PEI Mussel Monitoring Program By · transfers, put in place by the PEI Introductions and Transfers Committee, resulted in some growers being unable to market their seed, particularly

PEI Mussel Monitoring Program

2008 Report

Technical Report # 241

By

Gary Smith

Mussel Monitoring Technician

Prince Edward Island Department of Fisheries, Aquaculture and Rural Development

Aquaculture Division

Charlottetown, PEI

C1A 7N8

i

Acknowledgments

The PEI Department of Fisheries, Aquaculture and Rural Development wishes to acknowledge

the cooperation of the mussel growers whose leases were used as sites for the collection of mussel

and water samples for the Mussel Monitoring Program, as well as others who assisted in the

delivery of this program.

As well, the Department would like to acknowledge Tommy Joe MacDonald Jr. and Shawn

Banks for their work in sample collection and analysis.

ii

Table of Contents

Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Materials and Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Methods and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1. Spatfall Prediction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2. Mussel Meat Yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. Water Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4. Phytoplankton Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5. Tunicate Larvae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6. Predator and Fouling Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Results and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appendix I - Maps of Sample Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Appendix II - Water Temperature Graphs for Sample Sites . . . . . . . . . . . . . . . . . . . . . . . 55

Appendix III - Mussel Meat Yield Graphs for Sample Sites . . . . . . . . . . . . . . . . . . . . . . . 61

Appendix IV - Maps of Invasive Tunicate Species in PEI . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Appendix V - Tunicate Larvae Results by Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

1

Summary

The information collected from the Mussel Monitoring Program (MMP) is provided to mussel

growers and processors to assist them in the management of their mussel farms. Staff of the

Department of Fisheries, Aquaculture and Rural Development (DFARD), collected information

related to mussel spatfall, mussel meat yields, water temperature, the presence of potentially toxic

algal species, tunicate larvae, and the presence of predators and fouling on mussel seed and grow-out

lines. The information was collected from 34 mussel spat collection and growing areas over the

period of 30 weeks in 2008.

As in previous years, information on mussel spatfall predication was collected from May to July and

information on potentially toxic phytoplankton from September to December. The monitoring for

the presence of potentially toxic phytoplankton was conducted in cooperation with the Canadian

Food Inspection Agency (CFIA). The cooperation between CFIA and DFARD has resulted in the

reduction of travel and sampling overlap in the collection areas. In addition, water samples from

mussel grow-out areas were examined for the presence of mussel larvae during September and

October. Growers often delay both raising their crop and mussel socking in the fall until the mussel

spawning period is over and larvae can no longer be detected. This helps in avoiding a second mussel

set on new and old mussel crop.

The mussel landings in 2007 were down slightly as compared to 2006 landings and were recorded

at 37,645,688 pounds for 2007. Landings for 2008 were not finalized at the time of printing of this

report. The meat yield values of mussels collected from the monitoring stations in 2008 varied greatly

(18 - 51% Canadian meat yield values) from area to area without evidence of apparent trends. Meat

yields were reported to be unusually low in some areas during the winter of 2008/2009. There was

speculation among some growers that the lower yields may have been related to the smaller amounts

algae available as food for the mussels. This may have been a result of low light penetration due to

heavy snow cover on the ice surface; however, this theory has not been substantiated.

2

Generally, there was an excellent harvest of mussel seed by most growers and there were no reports

of seed quality issues or mortalities. The high volumes of mussel seed collected in 2008 resulted in

lower seed prices to seed growers and the loss of some sales. As well, restrictions on bivalve

transfers, put in place by the PEI Introductions and Transfers Committee, resulted in some growers

being unable to market their seed, particularly in the Nine Mile Creek area. There were reports of

poor seed recruitment in some areas of St. Peter’s Bay area despite the high quantities of healthy

mussel larvae detected in water samples collected in the MMP.

Temperature data collected at each of the sample sites were within normal ranges for mussel growth

and performance.

The numbers of Pseudo-nitzschia sp. observed in the water samples collected for the toxic

phytoplankton monitoring portion of the program were very low as compared to previous years. This

is the third consecutive year that there was no fall bloom of Pseudo-nitzschia sp. There were no

elevated levels of domoic acid detected in shellfish in the fall of 2006, 2007 or 2008 and as a result

there were no closures of shellfish harvesting areas.

Tunicates continue to cause fouling problems for many mussel growers, with high densities of the

vase tunicate occurring in Montague River, Brudenell River, St. Mary’s Bay, Murray River,

Boughton River and Cardigan River. The densities remained high in all these areas despite the high

winter tunicate mortality that occurred during the winter of 2007/2008 . There were no observations

of the presence of the vase tunicate in the West River, Charlottetown Harbour, or Nine Mile Creek

systems, despite the discovery of the tunicate in these areas in 2007. There was an intensive survey

conducted cooperatively in the Nine Mile Creek area by DFO, AVC and our department in late

August. No vase tunicates were observed during the survey; however, fairly high densities of the

violet tunicate were discovered. It is important to note that a considerable advancement has been

made in the treatment of the vase tunicate over the past three years, with industry developing several

different models of very effective high-pressure spray devices. Work on equipment development has

been ongoing by industry with assistance provided by PEIDFARD, ACOA and DFO. The density

3

of the clubbed tunicate remained high in the March Water portion of Malpeque Bay and in Darnley

Basin. The colonial tunicates increased in density in St. Peter’s Bay and Tracadie Bay and remain at

high levels in Savage Harbour. There is an increasing concern about the impact this tunicate is having

on mussels, in particular mussels appear to be more loosely attached when they are fouled by colonial

tunicates. For information on the locations of all 6 aquatic invasive species in PEI, see the invasive

species locator maps in Appendix IV.

Sea duck predation on seed mussels and newly socked mussels was reported by growers in several

areas in the spring and the fall of 2008. Research into the development of methods to protect mussels

from predation of mussels by sea ducks is ongoing with industry, the Canadian Wildlife Service

(CWS) and DFARD.

Information collected over the 2008 season was relayed to mussel growers via the use of a voice mail

system and also through the Mussel Monitoring website at www.gov.pe.ca/go/musselmonitoring .

4

Introduction

The Prince Edward Island Mussel Monitoring Program (MMP) is a technical service provided to

cultured mussel growers and processors by the Department of Fisheries, Aquaculture and Rural

Development. The MMP has operated annually since 1982 during the ice free season providing

mussel growers with a variety of information to assist them in the management of their operations.

Information on mussel spatfall prediction, mussel meat yield analysis, water temperatures, the

detection and estimation of the numbers of potentially toxic algae species (such as the toxin producing

diatom, Pseudo-nitzschia sp., and dinoflagellates, Alexandrium sp. and Dinophysis sp.), the presence

and numbers of tunicate larvae, and the presence and quantity of predators and fouling organisms is

collected for the MMP. As well, information on mussel meat quality of harvest sized mussels

collected at the sample sites (i.e. meat yield and spawning condition) is made available over the

season to the mussel processing plants through the MMP. This information assists the processing

plants in ensuring the consumer receives a high quality product.

The department has expanded the role of the MMP over time in response to requests for additional

information by the mussel industry. As well, the information collected for this program is often

utilized by other government and academic research agencies and additional information has been

collected for researchers when possible. The MMP has provided this assistance without substantially

re-directing its resources from its mandate as a technical advisory service to the Prince Edward Island

mussel growers.

In 2007 the cultured mussel industry produced 37,645,684 million lbs of product for market with a

landed value of 21,777,000 dollars, which was a slight decrease as compared to the landings in 2006

(Figure 1). The mussel industry is important contributor to the PEI economy and has resulted the

creation of an estimated 1,500 full time jobs and numerous spin off industries. The economic value

of the industry to PEI is estimated at over 60 million dollars.

5

Cultured mussels are a superior product as compared to wild mussels because of higher meat yields,

absence of pearls and grit, and their smooth shell appearance. The mussels grown in PEI waters are

of high quality because the growing areas are abundant in food and have excellent water exchange.

The rivers and bays on PEI are well sheltered from prevailing winds making them ideal for mussel

aquaculture.

The objective of this report is to document the information that was relayed to mussel growers during

the 2008 season through either the MMP website or through the dedicated phone message system.

Materials and Methods

Equipment

The equipment utilized for the MMP includes:

- 17` Boston Whaler, a 90 hp Mercury outboard motor and Shorelander boat trailer;

- YSI temperature meter, Vemco automated temperature recorders, water pump (50 L/minute

capacity), 64 micron nitex screen for collecting mussel larvae, 20` clear plastic tubing (1.5"

in diameter) and 2.5 gallon container;

0

4,000

8,000

12,000

16,000

20,000

24,000

28,000

32,000

36,000

40,000

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07

Year

00

0's

Lb

s o

r D

lrs 000's Lbs 000's Dlrs

Figure 1 PEI mussel landings and values from 1980 to 2007.

6

Figure 2. Sample collection sites for the Mussel Monitoring Program

- electronic weigh scale, calipers and cooking equipment for meat yield analysis;

- microscope, slides and pipettes for mussel larvae and phytoplankton observation;

- vacuum pump and filtering apparatus for phytoplankton slide preparation;

- field books, sample bags and cooler;

- computer and printer to analyze and store data.

Methods and Procedures

The data collected by the MMP is to provide information on five main areas related to mussel

aquaculture: 1. mussel spatfall prediction, 2. mussel meat yield, 3. water temperature , 4. the presence

of potentially toxic phytoplankton, 5. tunicate larvae sampling and 6. predators and fouling

organisms. The methods to utilized to collect this data are described below.

Thirty four mussel growing/spat collection areas are now sampled weekly for the MMP (Figure 2).

Maps demonstrating the specific locations of each of the sample sites are displayed in Appendix I.

7

1. Spatfall Prediction

The numbers and size ranges of mussel larvae present were determined from water samples collected

weekly at each of the sample locations from May until the end of August. This information was used

to assist mussel growers in predicting the timing and abundance of mussel spatfall. The growers use

this information to determine when to either deploy, or to raise and clean their collectors in order to

maximize spat collection. Mussel larvae information was also collected in the fall of the year

(September and October) at some grow-out sites to provide growers with information on mussel

“second set”. Some growers attempt to avoid or reduce the amount of second set from settling on

market mussels by keeping the mussels submerged until the mussel larvae are gone from the water

column. The growers also avoid the second set from settling on newly socked mussels by delaying

the socking process until after the second set is complete.

To collect mussel larvae for this analysis, water samples are pumped from the top two to three meters

of the water column through a 64 micron screen at the rate of 50 liters per minute for three minutes.

The mussel larvae become trapped on the screen surface and are washed off with 10ml of previously

screened seawater into a sample bottle. A 1 ml subsample of the larval concentrate is examined, -

utilizing a compound microscope, - to determine the abundance and average size of the mussel larvae.

The quantity of mussel larvae present is quantified according to the following scale:

Low = ( 1- 5) Medium = ( 6 - 15 ) High = ( >15 )

2. Mussel Meat Yield

Market sized mussels were held in wire cages at each monitoring station for meat yield analysis.

Samples for meat yield analysis were collected from each of the monitoring stations during two

periods in 2008, May 01 to July 25 and September 04 to Dec 04. The following procedure is used

for the determination of mussel meat yields:

1) Thirty market mussels, 55 mm or greater in length, (generally 18 - 24 months old)

are randomly selected and cleaned in fresh running water.

2) Mussels are steamed in the absence of water for ten minutes, then the meats are

shucked from the shells.

3) The steamed meat yield , expressed as a percentage, is determined according to the

8

formula: % Meat Yield = Steamed Meat Weight x 100

(Steamed Shell + Steamed Meat Weight)

4) The European meat yield, expressed as a percentage, is determined according to the

formula: % European Meat Yield = Steamed Meat Weight x 100

Raw Weight of Sample

Mussel meat yield information is beneficial to growers to assist in the determination of the mussel

spawning condition in a river system. The information, when collected over a long term basis, is of

interest in the analysis of potential trends in mussel condition in the samples collected from a

particular river system over time. This information is displayed graphically in Appendix III.

3. Water Temperature

Water temperatures were recorded from 3 to 6 feet below the surface at each site, at the time of each

site visit, throughout the season. As well, Vemco automatic temperature recording devices, set to

record hourly temperature readings, were placed approximately 6 feet below the surface in several

of the mussel growing areas. The hourly collected temperature data provided additional information

on water temperature profiles throughout the ice free season. This information assists growers in

comparing temperature conditions with the development of mussel spawning condition over the

season in various river systems. As well, should a mortality event occur it is beneficial to have the

information on temperatures over the season to assist in the investigation of the cause of the

mortality.

4. Phytoplankton Monitoring

The monitoring for the presence of potentially toxic phytoplankton began on September 04 and

continued until Dec 04 in 2008. It is during this time period that toxic algae blooms have most

frequently occurred in PEI waters. This portion of the program was conducted in conjunction with

the Canadian food Inspection Agency (CFIA) who share in the collection of samples with staff of the

MMP. The procedure utilized to collect, identify and quantify potentially toxic algae is documented

in the DFO procedures manual “ A field and laboratory manual for the collection, identification and

enumeration of toxic marine phytoplankton” by John C. Smith and Kevin Pauley.

9

Department staff collected water samples weekly from sites in Boughton River, Brudenell River,

Cardigan River, Covehead Bay, Murray River, Savage Harbour, St. Mary’s Bay, St. Peter’s Bay and

Tracadie Bay. Mussel samples were also collected by department staff from these sites for the CFIA

toxin monitoring program. CFIA staff collected water and mussel samples from Darnley Basin,

Lennox Channel, March Water, New London Bay, and Rustico Bay for both programs.

Information on the identification and quantity of potentially toxic phytoplankton species observed in

the water samples were reported to CFIA and also were made available to growers on the MMP

website and voice mail message system. The numbers of algal cells observed were reported according

to the following scale: Trace (1- 1000 cells/L), Low = (1000 - 50,000 cells/L), Medium = (50,000 -

350,000 cells/L) and High = (greater than 350,000 cells /L). The results of the phytoplankton

analysis for 2008 are reported in the results section of this report.

The information collected from this portion of the program is beneficial to provide both industry and

CFIA with an early warning of the possibility of a toxic event occurring in an area. The presence of

toxins in mussel tissue is monitored by CFIA, and closures are based upon these levels; however, the

information on the types and quantity of phytoplankton present in the water column is invaluable as

early warning that an event might occur. If the samples show that numbers of a potentially toxic

algae species are present and increasing in a river system CFIA may increase their sampling of mussels

from the area and industry can plan future mussel harvests avoiding the algae bloom and ensuring that

a safe product is sold to the market place.

5. Tunicate Larvae

The numbers of tunicate larvae (vase tunicate, clubbed tunicate, violet tunicate, golden star tunicate)

were counted in water samples collected from tunicate infested areas (see Appendix V for numbers

of tunicate larvae). The purpose of obtaining the larvae numbers was to inform growers when the

tunicates start and stop spawning, the species of tunicate larvae present, and to provide an indication

of the amount of larvae that were present over the season. Recent research results have shown that

there may not be a direct correlation between the timing and density of tunicate recruitment and the

10

observation of tunicate larvae and larvae densities in the water samples collected for MMP.

However, this information is still considered to be worthwhile to collect and may show an indication

in trends in changes in tunicate populations over time.

Tunicate counts were conducted weekly from mid-June to early December. Water samples were

collected by pumping water through a 64 µm sieve using a water pump at the rate of 50 L per minute

for 3 minutes (a total of 150 L per sample). A 1 ml subsample was taken from the 150 L and the

tunicate larvae were identified and counted. The larvae counts were made available for the growers

on the MMP website and voice mail message system (1-800-454-3233).

6. Predator and Fouling Monitoring

Spat lines were examined for the general appearance of the crop and for the presence of predators

(such as starfish), and for fouling organisms such as algae, hydroids, tunicates or sea anemones and

also for the presence of silt. Mussel growers are notified if large numbers of starfish were observed

on spat lines, or of any other potential problems that are noted by technical staff. If growers observe

any unusual fouling organisms or aquatic invasive species that are outside of their known range they

are asked to please contact either this department or DFO. Staff of either department will be

available to identify the organisms and provide more information on the species. Information and

maps showing the current known ranges of all aquatic invasive species currently in PEI waters is

available on the MMP website, or may be obtained by contacting staff of our department or DFO.

Figure 3 Photograph of a vase tunicate

larvae viewed with dissecting microscope.

11

Reporting

The information collected from the Mussel Monitoring Program is made available throughout the field

season through a telephone voice mail message system and also through the mussel monitoring web

site. Mussel growers are able to access this information at any time. The telephone numbers are

Charlottetown exchange 368-6510 and long distance 1-800-454-3233.

The web address is www.gov.pe.ca/go/musselmonitoring

Results and Discussion

Information collected on quantity and size ranges of mussel larvae, meat yields, water temperature

and numbers of potentially toxic algae from each monitoring location are presented in the tables at

the end of this section.

Large amounts of good quality mussel seed were collected in most areas in 2008. One area,

Southwest River, had a spat collection failure even though a high quantity of mussel larvae was

observed in water samples collected from these areas (see table page 36 ). Setting size mussel larvae

were observed in water samples at locations between June 06 - July 25.

As in 2006 and 2007, there were no closures to mussel harvesting due to domoic acid toxicity in

2008, and there were only very small numbers of Pseudo-nitzschia sp. cells observed. In past years

there were frequent fall blooms of Pseudo-nitzschia sp. which provided a significant food source for

cultured mussels prior to the winter period. For example, in Cardigan River the numbers of Pseudo-

nitzschia sp., (a non-toxin producing form), peaked in the late fall of 2001 at 5.6 million cells/L of

seawater and in 2002 at 9.3 million cells/L. However, in 2008, the peak numbers of Pseudo-nitzschia

sp. cells was only 1,400 cells/L. Pseudo-nitzschia sp. is an excellent food source for mussels and high

meat yields typically correspond with blooms of this algae species. However, in the fall of 2006, 2007

and 2008 there were extensive blooms of Chaetoceros sp., along with other algae species, which are

also excellent food sources for mussels.

12

Invasive tunicate species continue to cause fouling problems for the mussel industry. There are four

invasive tunicates infesting PEI waters, the solitary clubbed and vase tunicates and the colonial violet

and the golden star tunicates (see Appendix IV for maps showing the most current tunicate

distribution). The clubbed tunicate remains at high levels in the March Water area of Malpeque Bay

and has increased in numbers to heavy densities in Darnley Basin. The numbers remain low in the

Cardigan River, and Orwell / Vernon River systems, and in 2007 and 2008 the clubbed tunicate was

also found in small numbers in Baltic River system. The density of the vase tunicate (Figure 4)

continues to be very high in the Montague and Brudenell Rivers, St. Mary’s Bay, Murray River,

Cardigan River and also now, as of 2008, in Boughton River. The extra weight from tunicate fouling

has caused difficulties in both the production and processing sectors.

Mussel seed collection may also be affected by tunicate species. Both the solitary clubbed and vase

tunicate species may heavily foul collectors, out-competing mussel seed for space, totally covering

collectors. However, industry has learned from experience, that an early treatment utilizing a

hydrated lime immersion will remove the early set of solitary tunicates and allow mussel larvae to set

and out compete the tunicate set. Once a heavy set of mussels is established on a collector it appears

as if the tunicates can no longer set on the collector (it may be that the mussels are then able to out-

compete the tunicates for space). The impact of the colonial tunicates on seed collectors is not as

clear; however, industry members in St. Peter’s Bay have noted a decline in mussel set in correlation

with an increase in the density of colonial tunicates, in particular, the golden star tunicate, on their

collectors.

The violet tunicate is now established in Savage Harbour, Tracadie Bay, St. Peter’s Bay, North and

South Rustico Bays, March Water, Nine Mile Creek, the Northumberland Strait from Victoria to

Seacow Head and southerly to Cape Tormentine in New Brunswick, Brudenell River, and Launching

Bay (mouth of Cardigan River). The golden star tunicate was found in St. Peter’s Bay, Savage

Harbour, St. Mary’s Bay, Launching Bay, Murray River, Boughton River, Tracadie Bay,

Northumberland Strait (off of West Point and Borden), Charlottetown Harbour and Orwell River.

13

Currently, there are restrictions in place on shellfish transfers into and between areas due to tunicate

infestations. For the most recent information on the restrictions please contact the local DFO office.

Maps depicting the locations of the aquatic invasive species in PEI are displayed in Appendix III, and

may also be viewed on both the MMP and DFO’s websites.

In 2008, there were several collaborative research and development projects being conducted with

the focus on developing methods to mitigate tunicate fouling on cultured mussels and aquaculture

gear. Project collaborators included industry (PEI Aquaculture Alliance), PEIDFARD, AVC, DFO,

and others. For more information on these and other ongoing projects relating to invasive species

contact Art Smith the DFO coordinator at 902-566-6897 or 902-566-7812, or contact our

department at 902-368-6330.

Sea duck predation on newly socked mussels continues to be problem in PEI. With the apparent

trend of warm weather occurring later into the fall and milder winters with ice cover occurring later

and for shorter periods, there has been more opportunity for ducks to feed on newly socked mussels.

There was sea duck predation observed on mussels during the spring of both 2006, 2007 and 2008.

This appears to be a new trend in feeding behaviour of migrating sea ducks, (previously predation

problems were only noted in the fall of the year). There was heavy predation noted on newly socked

mussels in Covehead Bay in the fall of 2007 and 2008, with total losses on some lines. The

department continues to work with industry and the Canadian Wildlife Service (CWS) in attempt to

find a solution to the sea duck problem. Growers may apply to the CWS for sea duck scare permits

allowing them to control the ducks on their leases by utilizing scaring activities.

14

Mussel Monitoring Program results (mussel larvae - quantity and size, mussel meat yields

and quantity of toxic phytoplankton) by river system

Baltic River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 04 Low 100 % 0 110 - 140 - - - - - - - - 13.6 N/A

June 11 Low 100 % 0 110 - 190 - - - - - - - - 15.6 N/A

June 18 Med 100 % 0 110 - 180 - - - - - - - - 16.4 N/A

June 25 Med 100 % 0 120 - 240 - - - - - - - - 20.5 N/A

July 08 High 100 % 0 110 - 130 - - - - - - - - 20.6 N/A

The setting of mussel larvae occurs when they reach a size of at least 250 microns.

Bentick Cove

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 03 Med 100 % 0 90 - 110 - - - - - - - - 14.0 N/A

June 11 Med 95 % 5 % 120 - 380 - - - - - - - - N/A N/A

June 18 High 98 % 2 % 120 - 300 - - - - - - - - 16.7 N/A

June 26 High 50 % 50 % 120 - 360 - - - - - - - - 20.0 N/A

The setting of mussel larvae occurs when they reach a size of at least 250

microns. Setting started in this area approximately June 11, 2008

15

Boughton River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 14 - - - - - - - - - - - - - - - - 37 % 21 % 7.9 N/A

May 23 - - - - - - - - - - - - - - - - 36 % 22 % 5.5 N/A

May 27 - - - - - - - - - - - - - - - - 35 % 20 % 9.5 N/A

June 03 - - - - - - - - - - - - - - - - 38 % 24 % 9.8 N/A

June 12 High 100 % 0 90 - 150 32 % 18 % 14.2 N/A

June 17 High 100 % 0 110 - 200 33 % 18 % 14.2 N/A

June 24 High 90 % 10 % 110 - 320 32 % 17 % 19.1 N/A

July 07 High 30 % 70 % 120 - 400 28 % 14 % 15.5 N/A

July 14 Med 20 % 80 % 14 0 - 400 27 % 14 % 20.9 N/A

July 22 Med 70 % 30 % 110 - 380 25 % 13 % 21.9 N/A

July 29 Med 50 % 50 % 140 - 360 26 % 13 % 22.1 N/A

Sept 04 Low 100 % 0 110 - 150 28% 16 % 19.6 N/A

Sept 09 Low 100 % 0 120 - 150 27 % 15 % 19.8 0

Sept 16 Low 100 % 0 120 - 160 32 % 18 % 18.0 0

Sept 25 Low 100 % 0 120 - 150 30 % 15 % 15.9 170

Oct 01 Low 50 % 50 % 160 - 280 30 % 16 % 16.5 260

Oct 09 Low 50 % 50 % 170 - 260 31 % 18 % 13.5 870

Oct 27 - - - - - - - - - - - - - - - - 36 % 21 % 11.4 0

Nov 04 - - - - - - - - - - - - - - - - 35 % 19 % 9.2 0

Nov 12 - - - - - - - - - - - - - - - - 33 % 17 % 10.0 0

Nov 26 - - - - - - - - - - - - - - - - 33 % 19 % 4.2 0

Dec 03 - - - - - - - - - - - - - - - - 33 % 17 % 2.7 0



16

Brudenell River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 15 - - - - - - - - - - - - - - - - 40 % 25 % 6.0 N/A

May 23 - - - - - - - - - - - - - - - - 38 % 23 % 6.1 N/A

May 27 - - - - - - - - - - - - - - - - 39 % 23 % 7.0 N/A

June 03 Low 100 % 0 90 - 110 36 % 20 % 6.8 N/A

June 12 High 100 % 0 90 - 120 39 % 23 % 12.6 N/A

June 17 High 100 % 0 110 - 220 32 % 17 % 13.0 N/A

June 24 High 90 % 10 % 120 - 300 31 % 17 % 16.5 N/A

July 07 High 30 % 70 % 120 - 400 27 % 13 % 16.8 N/A

July 15 High 20 % 80 % 130 - 380 27 % 15 % 19.8 N/A

July 23 High 30 % 70 % 180 - 400 25 % 12 % 21.1 N/A

July 30 Med 80 % 20 % 180 - 360 25 % 13 % 20.3 N/A

Sept 04 Med 100 % 0 110 - 150 22 % 11 % 19.2 1,380

Sept 11 Med 40 % 60 % 150 - 290 21 % 11 % 18.2 0

Sept 16 Med 20 % 80 % 160 - 300 35 % 22 % 17.2 0

Sept 24 Low 30 % 70 % 140 - 160 25 % 22 % 15.3 140

Oct 02 Med 30 % 70 % 160 - 300 36 % 21 % 15.8 340

Oct 09 Med 20 % 80 % 180 - 260 38 % 23 % 13.1 970

Oct 16 Low 10 % 90 % 200 - 300 41 % 26 % 13.6 100

Oct 27 Low 100 % 0 260 - 320 44 % 29 % 11.8 0

Nov 04 - - - - - - - - - - - - - - - - 41 % 26 % 8.9 0

Nov 12 - - - - - - - - - - - - - - - - 28 % 16 % 9.4 0

Nov 27 - - - - - - - - - - - - - - - - 41 % 27 % 3.6 0

Dec 04 - - - - - - - - - - - - - - - - 38 % 20 % N/A 0



17

Cardigan River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 14 - - - - - - - - - - - - - - - - 41 % 24 % 5.7 N/A

May 23 - - - - - - - - - - - - - - - - 46 % 30 % 8.6 N/A

May 27 - - - - - - - - - - - - - - - - 42 % 26 % 8.0 N/A

June 03 - - - - - - - - - - - - - - - - 42 % 25 % 6.7 N/A

June 12 High 100 % 0 90 - 120 36 % 20 % 12.2 N/A

June 17 High 100 % 0 110 - 200 37 % 21 % 12.6 N/A

June 24 High 98 % 2 % 110 - 290 40 % 22 % 18.6 N/A

July 07 High 60 % 40 % 120 - 380 N/A N/A 17.5 N/A

July 14 High 30 % 70 % 130 - 380 36 % 20 % 19.3 N/A

July 22 High 80 % 20 % 110 - 350 27 % 13 % 22.6 N/A

July 29 Med 60 % 40 % 140 - 320 26 % 13 % 20.5 N/A

Sept 04 Med 100 % 0 110 - 180 26 % 13% 19.0 170

Sept 09 Low 100 % 0 130 - 180 25 % 12 % 18.3 90

Sept 16 High 30 % 70 % 160 - 350 25 % 13 % 17.5 0

Sept 25 Low 50 % 50 % 160 - 280 28 % 14 % 15.0 300

Oct 01 Med 30 % 70 % 190 - 300 29 % 18 % 16.1 110

Oct 09 Med 30 % 70 % 190 - 280 27 % 15 % 13.1 660

Oct16 Low 30 % 70 % 180 - 260 35 % 19 % 13.4 1,400

Oct 27 Low 0 100 % 260 - 320 35 % 19 % 11.7 20

Nov 04 - - - - - - - - - - - - - - - - 38 % 29 % 9.1 0

Nov 12 - - - - - - - - - - - - - - - - 33 % 16 % 10.2 0

Nov 26 - - - - - - - - - - - - - - - - 37 % 20 % 3.5 0

Dec 03 - - - - - - - - - - - - - - - - 34 % 17 % 3.2 0



18

Covehead Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 06 - - - - - - - - - - - - - - - - 45 % 28 % 6.2 N/A

May 20 - - - - - - - - - - - - - - - - 45 % 29 % 9.4 N/A

May 29 High 100 % 0 110 - 160 35 % 19 % 13.0 N/A

June 02 High 100 % 0 110 - 240 37 % 20 % 11.7 N/A

June 09 High 98 % 2 % 90 - 250 32 % 17 % 14.3 N/A

June 16 High 80 % 20 % 120 - 300 28 % 14 % 14.8 N/A

June 23 High 50 % 50 % 130 - 300 30 % 15 % 16.3 N/A

July 04 Low 100 % 0 120 - 200 28 % 14 % 19.7 N/A

July 11 Med 90 % 10 % 110 - 280 25 % 12 % 22.0 N/A

July 17 Med 80 % 20 % 140 - 290 27 % 14 % 20.3 N/A

July 25 Med 50 % 50 % 140 - 320 26 % 13 % 22.3 N/A

Sept 02 Med 100 % 0 140 - 220 24 % 12 % 18.3 0

Sept 08 Med 40 % 60 % 180 - 290 24 % 12 % 19.9 0

Sept 22 - - - - - - - - - - - - - - - - 35 % 21 % 15.5 0

Sept 30 - - - - - - - - - - - - - - - - 34 % 20 % 16.2 0

Oct 06 - - - - - - - - - - - - - - - - 31 % 18 % 13.8 0

Oct 14 - - - - - - - - - - - - - - - - 33 % 20 % 13.2 0

Oct 20 - - - - - - - - - - - - - - - - 33 % 20 % 11.4 0

Oct 29 - - - - - - - - - - - - - - - - 33 % 18 % 12.5 0

Nov 03 - - - - - - - - - - - - - - - - 33 % 20 % 5.1 0

Nov 10 - - - - - - - - - - - - - - - - 33 % 20 % 11.2 50

Nov 18 - - - - - - - - - - - - - - - - 38 % 24 % 9.6 60

Dec 01 - - - - - - - - - - - - - - - - 42 % 27 % 3.3 0



19

Chichester Cove

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 02 Low 100 % 0 90 - 120 - - - - - - - - 13.8 N/A

June 11 Low 100 % 0 120 - 190 - - - - - - - - N/A N/A

June 18 High 98 % 2 % 120 - 330 - - - - - - - - 16.2 N/A

June 26 High 40 % 60 % 130 - 340 - - - - - - - - 20.8 N/A



20

Darnley Basin

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 08 - - - - - - - - - - - - - - - - 21 % 11 % 7.1 N/A

May 22 - - - - - - - - - - - - - - - - 26 % 15 % 9.4 N/A

May 30 Med 100 % 0 90 - 110 25 % 15 % 11.6 N/A

June 04 Low 100 % 0 110 - 160 27 % 15 % 13.7 N/A

June 11 Low 100 % 0 110 - 170 N/A N/A 14.3 N/A

June 18 High 100 % 0 120 - 200 23 % 12 % 15.7 N/A

July 08 High 100 % 0 110 - 180 21 % 10 % 19.0 N/A

July 17 Low 80 % 20 % 110 - 260 20 % 10 % 21.8 N/A

Sept 02 Med 100 % 0 120 -160 21 % 11 % 17.7 0

Sept 09 - - - - - - - - - - - - - - - - 18 % 10 % 18.9 0

Sept 16 - - - - - - - - - - - - - - - - 28 % 18 % 17.7 0

Sept 22 - - - - - - - - - - - - - - - - 29 % 18 % N/A N/A

Oct 02 - - - - - - - - - - - - - - - - 24 % 14 % 14.7 190

Oct 06 - - - - - - - - - - - - - - - - 22 % 12 % 12.0 0

Oct 14 - - - - - - - - - - - - - - - - 23 % 13 % 11.5 0

Oct 20 - - - - - - - - - - - - - - - - 20 % 11 % 11.7 0

Oct 30 - - - - - - - - - - - - - - - - 24 % 13 % 9.8 0

Nov 04 - - - - - - - - - - - - - - - - 20 % 12 % 6.0 0

Nov 13 - - - - - - - - - - - - - - - - 22 % 11 % 6.9 80

Nov 18 - - - - - - - - - - - - - - - - 23 % 13 % 7.7 50

Nov 26 - - - - - - - - - - - - - - - - 21 % 12 % 1.8 0

Dec 02 - - - - - - - - - - - - - - - - 19 % 10 % 2.1 0


microns. Setting started in this area approximately July 17, 2008

21

Fox Island

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 28 - - - - - - - - - - - - - - - - - - - - - - - - 12.6 N/A

June 09 Low 100 % 0 110 - 180 - - - - - - - - 16.2 N/A

June 16 Low 90 % 10 % 120 - 280 - - - - - - - - 16.2 N/A

June 24 Med 100 % 0 120 - 240 - - - - - - - - 20.1 N/A

July 03 High 80 % 20 % 130 - 380 - - - - - - - - 15.4 N/A



22

French River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 30 High 100 % 0 90 - 110 - - - - - - - - 11.1 N/A

June 04 Med 100 % 0 120 - 190 - - - - - - - - 12.0 N/A

June 11 Med 100 % 0 120 - 240 - - - - - - - - 14.0 N/A

June 18 High 60 % 40 % 120 - 320 - - - - - - - - 16.0 N/A

June 25 Med 60 % 40 % 120 - 320 - - - - - - - - 18.5 N/A

July 08 Med 90 % 10 % 120 - 320 - - - - - - - - 18.5 N/A



Grand River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 30 Low 100 % 0 90 - 110 - - - - - - - - 11.8 N/A

June 02 Med 100 % 0 110 - 220 - - - - - - - - 15.8 N/A

June 11 Med 95 % 5 % 120 - 250 - - - - - - - - N/A N/A

June 19 High 90 % 10 % 120 - 300 - - - - - - - - 17.2 N/A

June 26 High 60 % 40 % 120 - 320 - - - - - - - - 19.9 N/A



23

Hope River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 04 High 100 % 0 90 - 200 - - - - - - - - 13.3 N/A

June 11 High 50 % 50 % 140 - 300 - - - - - - - - 14.6 N/A

June 25 Med 100 % 0 120 - 200 - - - - - - - - 18.8 N/A

July 08 Med 100 % 0 120 - 200 - - - - - - - - 19.7 N/A



Hunter River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 04 Med 100 % 0 90 - 180 - - - - - - - - 13.3 N/A

June 11 Med 100 % 0 110 - 170 - - - - - - - - 14.5 N/A

June 18 High 80 % 20 % 110 - 290 - - - - - - - - 15.6 N/A

June 25 High 50 % 50 % 120 - 340 - - - - - - - - 19.0 N/A

July 08 Low 100 % 0 120 - 180 - - - - - - - - 20.0 N/A



24

Kildare River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 28 Low 100 % 0 90 - - - - - - - - 13.0 N/A

June 09 - - - - - - - - - - - - - - - - - - - - - - - - 16.5 N/A

June 16 Low 100 % 0 120 - 130 -- - - - - - - - 16.4 N/A

June 24 Low 100 % 0 120 - 180 - - - - - - - - 21.6 N/A

July 03 Med 50 % 50 % 130 - 360 - - - - - - - - 21.4 N/A



25

Lennox Channel

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 09 - - - - - - - - - - - - - - - - 43 % 27 % 8.0 N/A

May 22 Low 100 % 0 90 - 110 42 % 27 % 10.6 N/A

May 30 Med 100 % 0 90 - 120 43 % 27 % 12.2 N/A

June 03 Med 98 % 2 % 120 - 260 40 % 23 % 15.3 N/A

June 11 Low 100 % 0 110 - 160 41 % 26 % N/A N/A

June 18 High 95 % 5 % 120 - 260 25 % 13 % 16.3 N/A

June 26 High 50 % 50 % 130 - 340 27 % 13 % 20.2 N/A

Sept 02 Low 100 % 0 120 - 150 26 % 15 % 19.0 0

Sept 09 Low 100 % 0 130 - 180 28 % 17 % 19.3 0

Sept 16 - - - - - - - - - - - - - - - - 28 % 18 % N/A 0

Sept 22 N/A N/A N/A N/A 31 % 20 % N/A 0

Sept 30 - - - - - - - - - - - - - - - - 33 % 21 % 15.3 30

Oct 06 - - - - - - - - - - - - - - - - 29 % 19 % 12.0 0

Oct 14 - - - - - - - - - - - - - - - - 27 % 16 % 11.7 0

Oct 20 - - - - - - - - - - - - - - - - 30 % 18 % 11.8 0

Oct 30 - - - - - - - - - - - - - - - - 28 % 17 % 9.7 0

Nov 04 - - - - - - - - - - - - - - - - 33 % 23 % 6.9 70

Nov 12 - - - - - - - - - - - - - - - - 26 % 14 % 7.8 190

Nov 18 - - - - - - - - - - - - - - - - 29 % 18 % 7.7 450

Nov 25 - - - - - - - - - - - - - - - - 33 % 21 % 1.5 40

Dec 02 - - - - - - - - - - - - - - - - 32 % 23 % 2.1 0



26

March Water

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

Sept 02 - - - - - - - - - - - - - - - - 19 % 10 % N/A 0

Sept 09 Low 100 % 0 140 - 160 23 % 13 % 19.2 0

Sept 16 - - - - - - - - - - - - - - - - 25 % 17 % N/A 0

Sept 22 - - - - - - - - - - - - - - - - 30 % 17 % 15.0 0

Sept 30 - - - - - - - - - - - - - - - - 20 % 11 % 15.2 0

Oct 06 - - - - - - - - - - - - - - - - 28 % 16 % 12.0 0

Oct 14 - - - - - - - - - - - - - - - - 29 % 16 % 11.6 0

Oct 20 - - - - - - - - - - - - - - - - 27 % 14 % 11.4 0

Oct 30 - - - - - - - - - - - - - - - - 26 % 14 % 9.8 230

Nov 04 - - - - - - - - - - - - - - - - 21 % 13 % 6.4 0

Nov 12 - - - - - - - - - - - - - - - - 21 % 12 % 7.6 280

Nov 18 - - - - - - - - - - - - - - - - 25 % 15 % 7.3 290

Nov 25 - - - - - - - - - - - - - - - - 24 % 15 % 1.5 190

Dec 02 - - - - - - - - - - - - - - - - 26 % 15 % 2.0 0


microns.

27

Mill River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 28 - - - - - - - - - - - - - - - - - - - - - - - - 12.0 N/A

June 04 Low 100 % 0 90 - 120 - - - - - - - - 15.2

June 09 Low 100 % 0 120 - 180 - - - - - - - - 14.9 N/A

June 16 Low 95 % 5 % 140 - 260 - - - - - - - - 16.3 N/A

June 24 High 50 % 50 % 120 - 340 - - - - - - - - 19.7 N/A

July 03 High 80 % 20 % 120 - 350 - - - - - - - - 18.2 N/A



Montrose

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 28 - - - - - - - - - - - - - - - - - - - - - - - - 13.5 N/A

June 04 - - - - - - - - - - - - - - - - - - - - - - - - 16.8 N/A

June 09 - - - - - - - - - - - - - - - - - - - - - - - - 16.8 N/A

June 16 - - - - - - - - - - - - - - - - - - - - - - - - 16.4 N/A

June 24 Low 100 % 0 120 - 140 - - - - - - - - 21.9 N/A

July 03 High 50 % 50 % 130 - 360 - - - - - - - - 18.9 N/A



28

Murray River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 13 - - - - - - - - - - - - - - - - 35 % 21 % 8.0 N/A

May 23 - - - - - - - - - - - - - - - - 33 % 19 % 9.7 N/A

May 27 - - - - - - - - - - - - - - - - 32 % 20 % 8.9 N/A

June 03 High 100 % 0 90 - 110 29 % 17 % 10.7 N/A

June 12 Med 100 % 0 110 - 180 31 % 18 % 12.5 N/A

June 17 High 100 % 0 110 - 200 26 % 15 % 14.2 N/A

June 24 High 95 % 5 % 120 - 330 30 % 16 % 17.1 N/A

July 07 High 60 % 40 % 120 - 400 27 % 15 % 16.7 N/A

July 15 Med 50 % 50 % 140 - 380 27 % 14 % 20.7 N/A

July 23 Low 50 % 50 % 140 - 360 28 % 15 % 21.1 N/A

July 30 Low 100 % 0 120 - 200 26 % 13 % 19.5 N/A

Sept 04 Low 100 % 0 110 - 160 24 % 13 % 19.3 0

Sept 11 Low 100 % 0 120 - 160 26 % 15 % 19.0 0

Sept 16 Low 100 % 0 120 - 140 26 % 15 % 17.9 0

Sept 24 - - - - - - - - - - - - - - - - 28 % 17 % 16.3 240

Oct 02 - - - - - - - - - - - - - - - - 24 % 13 % 17.2 190

Oct 08 Low 50 % 50 % 140 - 260 23 % 12 % 13.8 530

Oct 16 - - - - - - - - - - - - - - - - 25 % 17 % 13.7 40

Oct 28 - - - - - - - - - - - - - - - - 27 % 15 % 11.9 0

Nov 04 - - - - - - - - - - - - - - - - 36 % 22 % 9.5 0

Nov 12 - - - - - - - - - - - - - - - - 24 % 13 % 9.8 0

Nov 26 - - - - - - - - - - - - - - - - 26 % 14 % 5.7 30

Dec 04 - - - - - - - - - - - - - - - - 24 % 11 % N/A 0



29

New London Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 08 - - - - - - - - - - - - - - - - 40 % 26 % 7.4 N/A

May 22 Med 100 % 0 90 - 110 33 % 20 % 9.4 N/A

May 30 High 100 % 0 110 - 200 32 % 21 % 11.6 N/A

June 04 High 100 % 0 110 - 200 25 % 19 % 11.7 N/A

June 11 High 40 % 60 % 120 - 280 30 % 19 % 13.8 N/A

June 18 High 80 % 20 % 120 - 320 26 % 15 % 15.3 N/A

July 08 Med 100 % 0 130 - 240 26 % 16 % 18.9 N/A

July 17 High 70 % 30 % 130 - 320 24 % 14 % 21.1 N/A

July 25 High 30 % 70 % 120 - 380 21 % 12 % 21.1 N/A

July 31 Med 20 % 80 % 140 - 320 21 % 11 % 20.6 N/A

Sept 02 Med 50 % 50 % 180 - 250 20 % 10 % 19.3 0

Sept 09 Low 100 % 0 150 - 180 23 % 12 % 19.6 0

Sept 17 - - - - - - - - - - - - - - - - 22 % 12 % 17.3 0

Sept 23 - - - - - - - - - - - - - - - - 28 % 16 % 15.1 270

Oct 02 Low 100 % 0 120 - 180 33 % 21 % 14.9 110

Oct 09 - - - - - - - - - - - - - - - - 33 % 19 % 11.1 0

Oct 14 - - - - - - - - - - - - - - - - 22 % 12 % 11.7 0

Oct 20 - - - - - - - - - - - - - - - - 29 % 17 % 11.9 370

Oct 30 - - - - - - - - - - - - - - - - 30 % 16 % 10.1 560

Nov 04 - - - - - - - - - - - - - - - - 26 % 17 % 7.0 710

Nov 13 - - - - - - - - - - - - - - - - 27 % 15 % 7.5 810

Nov 18 - - - - - - - - - - - - - - - - 24 % 14 % 7.7 280

Nov 26 - - - - - - - - - - - - - - - - 28 % 18 % 1.5 40

Dec 02 - - - - - - - - - - - - - - - - 40 % 25 % 1.8 0


microns. Setting started in this area approximately June 11 , 2008

30

Nine Mile Creek

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 05 Med 100 % 0 110 - 130 - - - - - - - - 11.4 N/A

June 10 High 100 % 0 90 - 180 - - - - - - - - 13.0 N/A

June 19 High 100 % 0 120 - 220 - - - - - - - - 13.0 N/A

June 26 High 60 % 40 % 120 - 340 - - - - - - - - 16.8 N/A

July 02 High 50 % 50 % 120 - 280 - - - - - - - - 17.3 N/A

July 09 High 50 % 50 % 130 - 400 - - - - - - - - 19.7 N/A

July 28 Med 50 % 50 % 120 - 300 - - - - - - - - 22.4 N/A



North Lake

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 06 Low 100 % 0 90 - 110 - - - - - - - - 12.4 N/A

June 13 High 100 % 0 110 - 200 - - - - - - - - 14.0 N/A

June 20 High 98 % 2 % 120 - 300 - - - - - - - - 11.9 N/A

June 27 High 80 % 20 % 120 - 360 - - - - - - - - 17.0 N/A

July 10 High 60 % 40 % 120 - 360 - - - - - - - - 20.7 N/A



31

Orwell Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 05 Med 100 % 0 110 - 140 - - - - - - - - 11.3 N/A

June 10 Med 100 % 0 110 - 200 - - - - - - - - 12.7 N/A

June 19 High 98 % 2 % 120 - 270 - - - - - - - - 11.6 N/A

June 26 High 70 % 30 % 120 - 320 - - - - - - - - 19.7 N/A

July 02 High 50 % 50 % 120 - 320 - - - - - - - - 16.5 N/A

July 09 High 30 % 70 % 140 - 380 - - - - - - - - 21.7 N/A

July 28 High 30 % 70 % 120 - 380 - - - - - - - - 22.7 N/A



32

Rustico Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 07 - - - - - - - - - - - - - - - - 40 % 24 % 7.8 N/A

May 22 Low 100 % 0 90 - 110 38 % 23 % 9.5 N/A

May 30 High 100 % 0 90 - 140 32 % 18 % 12.7 N/A

June 04 High 100 % 0 110 - 220 29 % 16 % 13.2 N/A

June 11 High 100 % 0 110 - 180 26 % 14 % 15.4 N/A

June 18 Med 100 % 0 120 - 230 27 % 14 % 16.0 N/A

June 25 High 50 % 50 % 120 - 320 24 % 12 % 19.4 N/A

July 08 Med 100 % 0 130 - 220 25 % 13 % 20.8 N/A

July 17 Med 70 % 30 % 140 - 300 25 % 13 % 21.5 N/A

July 25 Med 40 % 60 % 140 - 380 25 % 13 % 22.2 N/A

Sept 02 Low 100 % 0 130 - 180 27 % 14 % 19.4 0

Sept 09 Low 100 % 0 120 - 150 23 % 13 % 20.5 0

Sept 17 Low 100 % 0 120 - 180 19 % 10 % 18.0 0

Sept 24 - - - - - - - - - - - - - - - - 27 % 13 % 15.7 0

Oct 02 - - - - - - - - - - - - - - - - 22 % 11 % 14.8 0

Oct 09 - - - - - - - - - - - - - - - - 22 % 12 % 11.0 0

Oct 14 - - - - - - - - - - - - - - - - 32 % 19 % 11.5 0

Oct 20 - - - - - - - - - - - - - - - - 31 % 18 % 11.5 0

Oct 30 - - - - - - - - - - - - - - - - 25 % 14 % 9.8 70

Nov 05 - - - - - - - - - - - - - - - - 31 % 18 % 6.5 0

Nov 13 - - - - - - - - - - - - - - - - 41 % 26 % N/A 0

Nov 18 - - - - - - - - - - - - - - - - 40 % 27 % 7.8 0

Dec 02 - - - - - - - - - - - - - - - - 29 % 18 % 2.0 0



33

Savage Harbour

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 07 - - - - - - - - - - - - - - - - 39 % 22 % 4.8 N/A

May 20 - - - - - - - - - - - - - - - - 35 % 19 % 8.8 N/A

May 29 High 100 % 0 90 - 110 36 % 21 % 10.7 N/A

June 02 Med 100 % 0 90 - 110 32 % 19 % 10.9 N/A

June 09 Med 100 % 0 90 - 180 34 % 19 % 12.7 N/A

June 16 High 98 % 2 % 110 - 280 29 % 14 % 13.8 N/A

June 23 High 50 % 50 % 120 - 340 37 % 20 % 15.0 N/A

July 04 Med 50 % 50 % 110 - 280 33 % 17 % 17.2 N/A

July 11 Low 100 % 0 110 - 220 23 % 16 % 21.2 N/A

July 16 Med 50 % 50 % 120 - 300 24 % 12 % 21.3 N/A

July 24 Med 40 % 60 % 140 - 300 24 % 11 % 18.8 N/A

Sept 02 Low 100 % 0 130 - 160 22 % 11 % 17.7 0

Sept 09 - - - - - - - - - - - - - - - - 23 % 12 % 19.0 0

Sept 17 - - - - - - - - - - - - - - - - 24 % 13 % 16.9 0

Sept 22 Low 100 % 0 120 - 140 25 % 13 % 14.5 0

Sept 30 - - - - - - - - - - - - - - - - 30 % 17 % 15.6 0

Oct 06 - - - - - - - - - - - - - - - - 30 % 17 % 12.8 0

Oct 14 - - - - - - - - - - - - - - - - 29 % 15 % N/A 0

Oct 20 - - - - - - - - - - - - - - - - 30 % 17 % 11.5 0

Nov 03 - - - - - - - - - - - - - - - - 30 % 19 % 6.1 0

Nov 10 - - - - - - - - - - - - - - - - 31 % 18 % 11.0 0

Nov 18 - - - - - - - - - - - - - - - - 31 % 17 % 9.4 40

Nov 25 - - - - - - - - - - - - - - - - 26 % 16 % 2.1 0

Dec 01 - - - - - - - - - - - - - - - - 34 % 19 % 2.6 0



34

Souris River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 06 - - - - - - - - - - - - - - - - - - - - - - - - 10.2 N/A

June 13 - - - - - - - - - - - - - - - - - - - - - - - - 13.8 N/A

June 20 Low 100 % 0 120 - - - - - - - - 14.1 N/A

June 27 High 90 % 10 % 120 - 320 - - - - - - - - 14.6 N/A

July 10 High 100 % 0 110 - 140 - - - - - - - - 20.6 N/A



Southwest River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat

Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 30 Med 100 % 0 90 - 110 - - - - - - - - 11.0 N/A

June 04 Med 100 % 0 110 - 200 - - - - - - - - 12.8 N/A

June 11 High 70 % 30 % 130 - 280 - - - - - - - - 15.3 N/A

June 18 High 70 % 30 % 130 - 280 - - - - - - - - 15.8 N/A

July 08 Low 80 % 20 % 120 - 280 - - - - - - - - 17.7 N/A



35

Stanley River

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 30 Low 100 % 0 90 - 110 - - - - - - - - 11.9 N/A

June 04 High 100 % 0 120 - 210 - - - - - - - - 13.4 N/A

June 11 High 50 % 50 % 140 - 320 - - - - - - - - 15.3 N/A

June 18 High 60 % 40 % 120 - 320 - - - - - - - - 16.0 N/A

June 25 Med 100 % 0 120 - 190 - - - - - - - - 18.7 N/A

July 08 Low 100 % 0 120 - 180 - - - - - - - - 19.5 N/A



36

St. Mary’s Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 15 - - - - - - - - - - - - - - - - 51 % 34 % 8.5 N/A

May 23 Med 100 % 0 90 - 110 44 % 27 % 8.4 N/A

May 27 Low 100 % 0 90 - 110 43 % 31 % 8.2 N/A

June 03 Med 100 % 0 90 - 110 37 % 21 % 9.1 N/A

June 17 High 100 % 0 110 - 220 38 % 22 % 14.1 N/A

June 24 High 95 % 5 % 120- 340 34 % 18 % 17.3 N/A

July 07 High 30 % 70 % 120 - 380 31 % 17 % 17.7 N/A

July 15 High 20 % 80 % 130 - 400 28 % 15 % 21.6 N/A

July 23 High 20 % 80 % 160 - 380 28 % 15 % 21.8 N/A

July 30 Med 90 % 10 % 140 - 300 28 % 15 % 20.1 N/A

Sept 04 Med 80 % 20 % 110 - 290 25 % 13 % 19.0 300

Sept 11 Low 100 % 0 120 - 180 27 % 15 % 18.0 0

Sept 16 Med 20 % 80 % 180 - 320 26 % 15 % 16.5 0

Sept 24 Low 100 % 0 140 - 180 28 % 15 % 14.8 40

Oct 02 Low 40 % 60 % 180 - 260 29 % 16 % 15.7 340

Oct 09 Low 50 % 50 % 160 - 250 29 % 17 % 12.4 310

Oct 16 Low 20 % 80 % 20 % 28 % 15 % 13.5 150

Nov 04 - - - - - - - - - - - - - - - - 29 % 17 % 7.7 0

Nov 12 - - - - - - - - - - - - - - - - 32 % 16 % 9.6 220

Nov 27 - - - - - - - - - - - - - - - - 33 % 18 % 3.9 110

Dec 04 - - - - - - - - - - - - - - - - 30 % 16 % N/A 0



37

St. Peter’s Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 07 - - - - - - - - - - - - - - - - 29 % 16 % 5.6 N/A

May 21 - - - - - - - - - - - - - - - - 32 % 18 % 8.3 N/A

May 29 High 100 % 0 90 - 110 25 % 14 % 11.9 N/A

June 02 High 100 % 0 110 - 150 24 % 13 % 12.3 N/A

June 09 High 100 % 0 90 - 200 24 % 12 % 14.0 N/A

June 16 High 98 % 2 % 110 - 280 25 % 13 % 13.9 N/A

June16#2 High 98 % 2 % 110 - 300 N/A N/A 14.6 N/A

June16#3 High 98 % 2 % 110 - 280 N/A N/A 15.4 N/A

June 23 High 70 % 30 % 120 - 300 24 % 13 % 16.5 N/A

June23#2 High 75 % 5 % 120 - 340 N/A N/A 18.6 N/A

June23#3 High 70 % 30 % 120 - 320 N/A N/A 20.1 N/A

July 03 High 50 % 50 % 120 - 400 23 % 11 % 18.3 N/A

July 11 Low 90 % 10 % 110 - 280 23 % 12 % 22.0 N/A

July 16 Low 20 % 80 % 180 - 300 20 % 19 % 21.1 N/A

July16#2 Low 20 % 80 % 140 - 320 N/A N/A 22.0 N/A

July16#3 Low 20 % 80 % 140 - 280 N/A N/A 22.7 N/A

July 24 Med 20 % 80 % 180 - 400 20 % 10 % 21.3 N/A

July24#2 Med 30 % 70 % 160 - 350 N/A N/A 21.4 N/A

July24#3 Low 30 % 70 % 200 - 300 N/A N/A 21.5 N/A

Sept 02 Low 100 % 0 120 - 180 20 % 10 % 18.5 N/A

Sept 09 - - - - - - - - - - - - - - - - 18 % 9 % 19.1 N/A

Sept 17 Low 100 % 0 120 - 140 18 % 9 % 17.5 N/A

Sept 22 - - - - - - - - - - - - - - - - 24 % 11 % 16.4 N/A

Sept 30 Low 60 % 40 % 150 - 260 26 % 13 % 16.0 N/A



38

St. Peter’s Bay - Continued

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

Oct 06 - - - - - - - - - - - - - - - - 25 % 13 % 13.6 0

Oct 14 - - - - - - - - - - - - - - - - 27 % 13 % 13.2 0

Oct 20 - - - - - - - - - - - - - - - - 24 % 11 % 10.9 0

Nov 03 - - - - - - - - - - - - - - - - 27 % 16 % 7.6 0

Nov 10 - - - - - - - - - - - - - - - - 27 % 13 % 11.1 0

Nov 18 - - - - - - - - - - - - - - - - 37 % 21 % 9.5 N/A

Nov 25 - - - - - - - - - - - - - - - - 34 % 21 % 2.8 0

Dec 01 - - - - - - - - - - - - - - - - 33 % 17 % 2.7 0



39

Tracadie Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

May 06 - - - - - - - - - - - - - - - - 42 % 24 % 7.2 N/A

May 21 - - - - - - - - - - - - - - - - 38 % 24 % 8.8 N/A

May 29 High 100 % 0 90 - 110 30 % 17 % 12.5 N/A

June 02 High 100 % 0 90 - 140 33 % 19 % 13.1 N/A

June 16 High 95 % 5 % 110 - 290 27 % 13 % 14.4 N/A

June 23 High 70 % 30 % 110 - 320 28 % 14 % 17.7 N/A

July 04 Low 100 % 0 110 - 150 27 % 13 % 18.7 N/A

July 11 Low 100 % 0 110 - 220 27 % 13 % 21.5 N/A

July 16 Low 100 % 0 120 - 220 26 % 12 % 21.4 N/A

July 24 Low 100 % 0 110 - 160 23 % 11 % 21.8 N/A

Sept 02 Low 100 % 0 110 - 150 22 % 10 % 18.6 N/A

Sept 08 - - - - - - - - - - - - - - - - 23 % 11 % 20.0 50

Sept 22 - - - - - - - - - - - - - - - - 22 % 12 % 15.3 0

Sept 30 - - - - - - - - - - - - - - - - 23 % 12 % 16.0 0

Oct 06 - - - - - - - - - - - - - - - - 23 % 12 % 13.7 0

Oct 14 - - - - - - - - - - - - - - - - 25 % 13 % N/A 0

Oct 20 - - - - - - - - - - - - - - - - 26 % 14 % 10.2 0

Nov 03 - - - - - - - - - - - - - - - - 25 % 14 % 7.1 0

Nov 10 - - - - - - - - - - - - - - - - 25 % 13 % 10.4 70

Nov 18 - - - - - - - - - - - - - - - - 24 % 12 % 9.4 0

Nov 24 - - - - - - - - - - - - - - - - 27 % 16 % N/A 0

Dec 01 - - - - - - - - - - - - - - - - 24 % 12 % 3.2 0



40

Webber Cove

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 03 Med 100 % 0 120 - 240 - - - - - - - - 13.5 N/A

June 11 Med 80 % 20 % 120 - 320 - - - - - - - - N/A N/A

June 18 High 98 % 2 % 110 - 290 - - - - - - - - 16.2 N/A

June 26 High 50 % 50 % 120 - 350 - - - - - - - - 20.6 N/A



Winter Bay

Date

Mussel

larvae

% pre-

set

% set

size

Size

(microns)

Steamed

Meat Yield

European

Meat Yield

Water

Temp

#Pseudo-

nitzschia

(cells/L)

June 06 Med 100 % 0 90 - 120 - - - - - - - - 13.3 N/A

June 09 High 100 % 0 90 - 240 - - - - - - - - 14.7 N/A

June 16 High 90 % 10 % 120 - 320 - - - - - - - - 14.7 N/A

June 23 High 60 % 40 % 120 - 340 - - - - - - - - 16.9 N/A

July 04 Low 100 % 0 120 - 200 - - - - - - - - 19.5 N/A

July 11 Low 100 % 0 110 - 200 - - - - - - - - 21.7 N/A

July 16 Low 100 % 0 120 - 200 - - - - - - - - 22.4 N/A

July 24 Low 100 % 0 120 - 180 - - - - - - - - 22.4 N/A



41

Appendix I

Maps of Sample Sites

42

SEED 0564

Baltic River

-

Mussel Monitoring

Sampling Site

BOT-0218-S

BOT-7256-L

BOT-6459-L

BOT-7264-L

BOT-6971-L

BOT-6599-L

BOT-6968-L BOT-3216-L

BOT-7234-L

BOT-7272-L

SEED-0519

BOT-6877-L

BOT-7273-L

SUR-0594-L

BOT-7319-L

SEED-0563

Baltic River Mussel Monitoring Site

Bentick Cove

Mussel Monitoring

Sampling Site

C

CO N

TAM

I NA T

ED

CONTAMINATED

- C

AREA

CONTAMINATED

- CC

A-A

A - A

C C-

CONTAMINATED

AREA

SUR-0365-S

BOT-6887-L

SUR-0363-S

BOT-7315-LBOT-7010-L

BOT-6934-L

BOT-4046-L

SUR-0364-S

BOT-0298-S

Bentick Cove Mussel Monitoring Site

43

Mussel MonitoringSampling Sites

Boughton RiverSUR-0461A-L

SUR-0522-L

SUR-0582-L

SUR-0072-L

SUR-0539-L

SUR-0165-L

BOT-0252-S

SEED-0415

BOT-0369A-S

BOT-0369D-S

BOT-0369B-S

SUR-0461B-L

SUR-0461C-L

Boughton River Mussel Monitoring Site

Montague River

Brudenell River

Mussel Monitoring

Sampling Site

SUR-0080-L

SUR-0278-L

SUR-0464-L

SUR-0501-L

SUR-0590-L

SUR-0139-S

SUR-0100-L

SUR-0052-L

SUR-0048-L

SUR-0532-L

SUR-0275-S

SUR-0274A-S

SUR-0340A-S SUR-0344-SSUR-0343-S

SUR-0611-L

SUR-0435-S

SUR-0518A-L

SUR-0518B-L

SUR-0340B-S

Brudenell River Mussel Monitoring Site

44

Cardigan River

Sampling SiteMussel Monitoring

SUR-0117B-L

SUR-0260-S

BOT-0370-S

BOT-0384B-S

BOT-0384A-S

SUR-0117A-L

SUR-0242-L

SUR-0121-L

Cardigan River Mussel Monitoring Site

Covehead Bay

Mussel MonitoringSampling Site

A _ C

CONTAMINATED

A - B

C

AREA

C -

-C C

BOT-0194-S

SUR-0554-L

SUR-0638-L

Covehead Bay Mussel Monitoring Site

45

Darnley Basin


C-CAREA

DUMP SITEC - C

DUM

P S

ITE

A C-

A C-

BOT-0218-S

BOT-6732-L

BOT-7264-L

BOT-7035-L

BOT-7038-L

BOT-6681-L

BOT-7272-L

SUR-0524-LBOT-0184-S

BOT-7070-L

BOT-6657-L

BOT-6664-L

BOT-7273-L

SUR-0523-L

BOT-7250-L

BOT-6407-L

BOT-7330-L

BOT-0317-SSUR-0591-L

SUR-0589-L

SUR-0594-L

SUR-0595-L

SUR-0596-L

SUR-0616-L

BOT-0457A-S

BOT-0457B-S

SUR-0624-L

SUR-0625-L

Darnley Basin Mussel Monitoring Site


French River

CONTAM

INATED

AREA

A C-

C C-

SEED-0066

SEED-0152

SEED-0375

SEED-0411

SEED-0031

French River Mussel Monitoring Site

46

Hunter River

Sampling SiteMussel Monitoring

- BC

CONTAMINATED AREA

-

DUMP SITE

BB

DUMP SITEC

CONTAMINATED AREA

- C

- CC

CONTAMINATED

C B

-

DUMP

SITE

CC

C-C

-

A -

BOT-6793-L

SUR-0612A-L

SUR-0277-S

SUR-0545A-L

SUR-0546-L

SUR-0545B-L

SUR-0545C-L

SUR-0612B-L

SEED-0412

Hunter River Mussel Monitoring Site

Hope River

Mussel MonitoringSampling SiteSEED-0378

SEED-0419B

SEED-0419A

SEED-0523A

SEED-0523B

BOT-0403B-S

BOT-0464-S

Hope River Mussel Monitoring Site

47

Bideford River

Mussel Monitoring

Sampling Site

Lennox Channel

- CA

-A C

A

CA -

C C

C-

BOT-5324-L

BOT-6751-L

BOT-6802-L

BOT-7142-L

BOT-7347-L

BOT-6555-L

BOT-7077-L

BOT-7205-L

BOT-6858-L

BOT-4876-L

BOT-3777-L

BOT-6553-L


BOT-7318-L

BOT-4418-L

BOT-7056-L

BOT-6685-L

BOT-4017-L

BOT-5783-L

BOT-7364-L

BOT-7078-L

BOT-3333-L

BOT-7377-L

BOT-0303-S

BOT-7298-L

BOT-7316B-L

BOT-0448-S

BOT-0449-S

SUR-0540-L

SUR-0200-L

SUR-0536-L

Lennox Channel Mussel Monitoring Site

Marchwater

Sampling Site

Mussel Monitoring

A A

SUR-0613-L

SUR-0614-L

SUR-0528-L

SUR-0530-L

SUR-0584-L

SUR-0553-L

SUR-0561-L

SUR-0617-L

BOT-7335-L

BOT-7346-L

SUR-0562-L

SUR-0529A-L

SUR-0526-L

SUR-0637-L

SUR-0531-L

SUR-0527-L

SUR-0525-L

March Water Mussel Monitoring Site

48

# 1

Mussel MonitorinSampling Sites

g

# 2

Murray River

SUR-0158-L

BOT-5763-L

BOT-5833-L

SEED-0241

SUR-0152B-L

SUR-0520-L

SUR-0171-L

SUR-0110A-L

SUR-0145-L

SUR-0580-LSUR-0581-L

SUR-0515-L

BOT-0349-S

SUR-0434-S

BOT-0257-S

SUR-0129-L

SUR-0151-L

SUR-0110C-L

SUR-0302-L

SUR-0152A-L

SUR-0653-L

Murray River Mussel Monitoring Site

French River

New London Bay

Mussel Monitoring

Sampling Site

-A B

_

A

C C-

C_

A

CC

-C

C

C

_

C_

A

CA

T

A

D

M

'

N

C

O

A -

A C_

C

A

A C_

C_

A

C -

AREA

CONTAMINATED

SUR-0221-L

SUR-0504A-L

SUR-0504B-L

BOT-6668-L


SEED-0152

SEED-0378

BOT-7268-L

BOT-7154-L

SUR-0507-L

SUR-0508-L

SUR-0299B-L

SUR-0534-L

SEED-0419BSEED-0419A

SEED-0523A

BOT-0403B-S

BOT-0469-S

SUR-0503B-L

BOT-7259-L BOT-0482-S

SUR-0503A-L

SUR-0517-L

New London Bay Mussel Monitoring Site

49

Sampling Site

Mussel Monitoring

Hillsborough Bay-A

C C

A

_

CA

SUR-0405-S

SUR-0406-S SUR-0409-S

Nine Mile Creek Mussel Monitoring Site

Sampling Site

Mussel Monitoring

North Lake

CONTAMINATED

A-B AREA

C-C

A-B

CONTAMINATED

AREA

C-C

C-C

SUR-0254-S

SUR-0253-S

SUR-0255-S

North Lake Mussel Monitoring Site

50

Rustico Bay

Mussel Monitoring

Sampling Site

C_

A

A C_

BA -

C C-

SUR-0552-LSUR-0550B-L

SUR-0550A-L

SUR-0549B-L

SUR-0547-L

SUR-0551-L

SUR-0548B-L

BOT-0452-S

BOT-0453-S

SUR-0634-L

SUR-0549A-L

Rustico Bay Mussel Monitoring Site

Orwell Bay


BOT-7068-L

BOT-7322-L

SUR-0646-L

BOT-0314-S

BOT-0463-S

SUR-0191-S

BOT-0398-S

Orwell Bay Mussel Monitoring Site

51

Savage Harbour

Mussel Monitoring

Sampling Site

C

CC

AA -

C

C C


SUR-0608-L

SUR-0417-S

SUR-0606-L

SUR-0604-L

SUR-0602-L

SUR-0631-L

BOT-0420-S

BOT-0481-S

SUR-0598A-L

SUR-0598B-L

Savage Harbour Mussel Monitoring Site

Southwest River


BOT-6668-L

BOT-7075-L

BOT-7305-L

SUR-0067-S

BOT-7154-L

SUR-0381-L

SUR-0299B-L

SUR-0341-S

SUR-0337-L

SUR-0268-L

SUR-0221-L

Southwest River Mussel Monitoring Site

52


Stanley River

LINE

CONTA

MIN

ATED

C-C

_ CA

C-C

BOT-5264-L

BOT-6201-L

BOT-6667-L

SUR-0583-L

BOT-6718-L

SEED-0378

BOT-6579-L

SEED-0257

Stanley River Mussel Monitoring Site


SUR-0008-L

SUR-0450-L

SUR-0618-L

SUR-0259-S

BOT-0368-S

BOT-0441-S

BOT-0467-S

SUR-0641-L

SUR-0345-S

SUR-0064-L

SUR-0579-L

St. Mary’s Bay Mussel Monitoring Site

53

# 1

St. Peters Bay #2

Mussel Monitoring

Sampling Sites

# 3

SUR-0120-L

SUR-0521B-L

SUR-0521A-L

SUR-0332A-L

SEED-0282

SEED-0273

SUR-0183-L

SUR-0188-L

SUR-0193-L

SUR-0535-L

SUR-0538-L

BOT-0280-S

SUR-0372-S

BOT-0371-S

SUR-0585-L

SUR-0332D-L

SUR-0630-L

SUR-0276A-L

St. Peter’s Bay Mussel Monitoring Site

Winter Bay


Tracadie Bay

C C

AREA

CONTAMINATED

SITE SITE

A C

A A

BA

C C

A B

A C

BA

C C

A B

B-C AREA

SUR-0397B-L

SUR-0568-L

SUR-0578-L

SUR-0384-L

SUR-0385-L

SUR-0500-LBOT-4815-L

BOT-7048-L

SUR-0571-L

BOT-7050B-L

BOT-7050A-L

SUR-0573-L

SUR-0136C-L

BOT-6973-L

SUR-0008B-S

SUR-0566-L

SUR-0541-L

SUR-0350-S

BOT-0415A-S

SUR-0576-L

Tracadie Bay Mussel Monitoring Site

54

Mussel Monitoring

Sampling Site

Winter BayAREA

CONTAMINATED

C-C

A - A

SUR-0578-L SUR-0055-L

BOT-7048-L

BOT-6973-L

SUR-0541-LSUR-0336-S SUR-0628-L

SUR-0564-L

SUR-0574-L

SUR-0576-L

SUR-0353-SSUR-0577-L

SUR-0587-L

Winter Bay Mussel Monitoring Site

55

Appendix II

Water Temperature Data

56

Celsius (°C)

2008-11-28

00:00:00

2008-10-29

00:00:00

2008-09-29

00:00:00

2008-08-30

00:00:00

2008-07-31

00:00:00

2008-07-01

00:00:00

2008-06-01

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

Cels ius (°C)

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

2008-05-17

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

Temperature data collected at Boughton River mussel monitoring station 2008

Temperature data collected at Brudenell River mussel monitoring station 2008

57

Temperature data collected at Cardigan River mussel monitoring station 2008

Temperature data collected at Covehead Bay mussel monitoring station 2008

Cels ius (°C)

2008-11-28

00:00:00

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

2008-05-17

00:00:00

Ce

lsiu

s (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

Celsius (°C)

2008-11-28

00:00:00

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

Ce

lsiu

s (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

58

Temperature data collected at Darnley Basin mussel monitoring station 2008

Temperature data collected at Lennox Channel mussel monitoring station 2008

Celsius (°C)

2008-11-28

00:00:00

2008-10-29

00:00:00

2008-09-29

00:00:00

2008-08-30

00:00:00

2008-07-31

00:00:00

2008-07-01

00:00:00

2008-06-01

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

Cels ius (°C)

2008-11-28

00:00:00

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

59

Temperature data collected at Murray River mussel monitoring station 2008

Temperature data collected at Rustico Bay mussel monitoring station 2008

Celsius (°C)

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

2008-05-17

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

Celsius (°C)

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

Cels

ius (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

60

Temperature data collected at St. Mary’s Bay mussel monitoring station 2008

Temperature data collected at Tracadie Bay mussel monitoring station 2008

Celsius (°C)

2008-11-28

00:00:00

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

Ce

lsiu

s (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

Celsius (°C)

2008-11-28

00:00:00

2008-11-13

00:00:00

2008-10-29

00:00:00

2008-10-14

00:00:00

2008-09-29

00:00:00

2008-09-14

00:00:00

2008-08-30

00:00:00

2008-08-15

00:00:00

2008-07-31

00:00:00

2008-07-16

00:00:00

2008-07-01

00:00:00

2008-06-16

00:00:00

2008-06-01

00:00:00

Ce

lsiu

s (

°C)

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

61

Appendix III

Mussel Steamed Meat Yield Information

and Graphs Depicting Data Collected from

Fourteen Mussel Monitoring Stations

62

Comparison of average steamed meat yields from

mussels collected from 14 mussel monitoring sites in

2006, 2007 and 2008

Area 2006 Avg. Steamed

Meat Yield

2007 Avg. Steamed

Meat Yield

2008 Avg. Steamed

Meat

Yield

Boughton River 30.1 % 29.9 % 31.6 %

Brudenell River 34.7 % 30.6 % 33.4 %

Cardigan River 30.2 % 32.4 % 33.8 %

Covehead Bay 34.4 % 31.3 % 32.2 %

Darnley Basin 28.0 % 26.9 % 22.7 %

Lennox Channel 31.1 % 31.7 % 32.1 %

March Water 24.5 % 25.2 % 24.6 %

Murray River 28.7 % 26.3 % 27.7 %

New London Bay 31.2 % 30.5 % 27.6 %

Rustico Bay 32.6 % 27.7 % 28.7 %

Savage Harbour 30.5 % 27.7 % 29.6 %

St. Mary’s Bay 28.4 % 28.8 % 32.6 %

St. Peter’s Bay 26.4 % 24.6 % 25.4 %

Tracadie Bay 26.1 % 24.6 % 26.6 %

63

Comparison of average meat weight from

mussels collected from 14 mussel monitoring sites in

2008

AREA MAX. MIN. AVG.

Lennox Channel 8.6 g 1.9 g 4.5 g

Brudenell River 6.6 g 2.5 g 4.1 g

New London Bay 7.1 g 1.7 g 3.8 g

Boughton Rver 5.5 g 2.5 g 3.8 g

St. Mary’s Bay 6.0 g 1.9 g 3.7 g

Covehead Bay 5.8 g 2.6 g 3.7 g

Cardigan River 6.4 g 1.9 g 3.5 g

Murray River 4.4 g 2.5 g 3.5 g

Rustico Bay 5.9 g 1.5 g 3.4 g

St. Peter’s Bay 4.4 g 2.4 g 2.9 g

Savage Harbour 4.4 g 1.7 g 2.7 g

March Water 3.7 g 1.5 g 2.6 g

Darnley Basin 3.8 g 1.3 g 2.3 g

Tracadie Bay 3.6 g 1.7 g 2.3 g

64

0

10

20

30

40

50

May15

May27

June12

June24

July15

July30

Sept11

Sept24

Oct09

Oct27

Nov12

Dec04

0

10

20

30

40

50

May 14

May27

June12

June24

July14

July29

Sept09

Sept25

Oct09

Nov04

Nov26

65

0

10

20

30

40

50

May14 May27

June12

June24

July22

Sept04

Sept16

Oct01

Oct16

Nov04

Nov27

0

10

20

30

40

50

May06

May29

June09

June23

July11

July25

Sept08

Sept30

Oct14

Oct29

Nov10

Dec01

66

0

10

20

30

40

50

May08

May30

June18

July17

Sept09

Sept22

Oct06

Oct20

Nov04

Nov18

Dec02

0

10

20

30

40

50

May09

May30

June11

June26

Sept09

Sept22

Oct06

Oct20

Nov04

67

0

10

20

30

40

50

Sept02

Sept09

Sept16

Sept22

Sept30

Oct06

Oct14

Oct20

Oct30

Nov04

Nov12

Nov18

Nov25

Dec02

0

10

20

30

40

50

May13

May27

June12

June24

July15

July30

Sept11

Sept24

Oct08

Oct28

Nov12

Dec04

68

0

10

20

30

40

50

May08

May30

June11

July08

July25

Sept02

Sept17

Oct02

Oct14

Oct30

Nov13

Nov26

0

10

20

30

40

50

May07

May30

June11

June25

July17

Sept02

Sept17

Oct02

Oct14

Oct30

Nov13

Dec02

69

0

10

20

30

40

50

May07

May29

June09

June23

July11

July24

Sept09

Sept22

Oct06

Oct20

Nov03

Nov18

Dec01

0

10

20

30

40

50

May15

May27

June17

July07

July23

Sept04

Sept24

Oct09

Nov04

Nov27

70

0

10

20

30

40

50

May07

May29

June09

June16

July03

July16

Sept02

Sept17

Sept30

Oct06

Oct20

Nov03

Nov18

Dec01

0

10

20

30

40

50

May06

May29

June16

July04

July16

Sept02

Sept22

Oct06

Oct20

Nov03

Nov18

Dec01

71

APPENDIX IV

Maps displaying locations in PEI

of known invasive tunicate species

72

73

74

75

76

APPENDIX V

Numbers and dates of tunicate larvae

observed in water samples collected for the

Mussel Monitoring Program

77

Boughton River

Date Water

Temp

Tunicate Larvae Results

June 03/ 08 9.8 0

June 12/ 08 14.2 0

June 17/ 08 14.2 0

June 24/ 08 19.1 0

July 07/ 08 15.5 0

July 14/ 08 20.9 0

July 22/ 08 21.8 1 goldenstar

July 29/ 08 22.1 1 ciona/ 1 goldenstar

Aug 12/ 08 20.8 0

Aug 18/ 08 20.4 4 ciona

Aug 26/ 08 19.6 1 goldestar

Sept 04/ 08 19.6 2 ciona

Sept 09/ 08 19.8 0

Sept 16/ 08 18.0 1 ciona

Sept 25/ 08 N/A 6 ciona

Oct 01/ 08 16.5 8 ciona

Oct 09/ 08 13.5 2 ciona

Oct 27/ 08 11.4 0

Nov 04/ 08 9.2 1 ciona

Nov 12/ 08 10.0 1 ciona

Nov 26/ 08 4.2 0

Dec 03/ 08 2.7 0

78

Brudenell River

Date Water

Temp


June 03/ 08 6.8 0

June 12/ 08 12.6 0

June 17/ 08 13.0 0

June 24/ 08 16.5 0

July 07/ 08 16.8 3 styela

July 15/ 08 19.8 0

July 23/ 08 21.1 3 styela / 1 ciona


Aug 12/ 08 N/A 7 styela / 4 ciona

Aug 19/ 08 18.8 3 styela / 6 ciona


Sept 04/ 08 19.2 7 styela / 24 ciona




Oct 02/ 08 15.8 2 styela / 61 ciona / 2 goldenstar

Oct 09/ 08 13.1 1 styela / 7 ciona

Oct 16/ 08 13.9 26 ciona

Oct 27/ 08 11.8 11 ciona

Nov 03/ 08 8.9 9 ciona

Nov 12/ 08 9.4 11 ciona

Nov 27/ 08 3.6 0

Dec 04/ 08 N/A 0

79

Murray River

Date Water

Temp


June 03/ 08 10.7 0

June 12/ 08 12.5 0

June 17/ 08 14.2 0

June 24/ 08 17.1 4 styela

July 07/ 08 16.7 0





Aug 19/ 08 19.6 15 styela / 8 ciona / 4 goldenstar






Oct 02/ 08 17.2 56 ciona / 3 goldenstar


Oct 16/08 13.7 4 ciona

Oct 28/ 08 11.9 1 ciona

Nov 04/ 08 9.5 0

Nov 12/ 08 9.8 1 ciona

Nov 26/ 08 5.7 0

Dec 04/08 N/A 0

80

St. Mary’s Bay

Date Water

Temp


June 03/ 08 9.1 0

June 17/ 08 14.1 0

June 24/ 08 17.3 0







Aug 26/ 08 18.7 14 styela / 10 ciona





Oct 02/ 08 13.7 2 styela / 6 ciona / 2 goldenstar


Oct 16/08 13.5 4 ciona

Nov 04/ 08 7.7 1 ciona

Nov 12/ 08 9.6 3 ciona

Nov 27/ 08 3.9 0

Dec 04/ 08 N/A 0

81

Cardigan River

Date Water

Temp


June 03/ 08 6.7 0

June 12/ 08 12.2 0

June 17/ 08 12.6 0

June 24/ 08 18.6 0

July 07/ 08 17.5 1 ciona

July 14/ 08 19.3 0

July 22/ 08 22.6 1 ciona

July 29/ 08 20.5 1 ciona

Aug 12/ 08 20.4 1 ciona


Aug 26/ 08 20.0 1 styela / ciona

Sept 04/ 08 19.0 6 ciona

Sept 09/ 08 18.3 111 ciona

Sept 16/ 08 17.5 68 ciona

Sept 25/ 08 N/A 102 ciona

Oct 01/ 08 16.1 96 ciona

Oct 09/ 08 13.1 28 ciona

Oct 27/ 08 11.7 33 ciona / 3 styela

Nov 04/ 08 9.1 29 ciona

Nov 12/ 08 10.2 57 ciona

Nov 27/ 08 3.5 0

Dec 03/ 08 3.2 0

82

Darnley Basin

Date Water

Temp


June 04/08 13.7 0

June 11/ 08 14.3 0

June 18/ 08 15.7 0

July 08/ 08 19.0 0


July 31/ 08 N/A 11 styela

Aug 13/ 08 18.3 3 styela

Aug 21/ 08 17.7 3 styela

Sept 02/ 08 17.7 2 styela



Oct 02/ 08 14.7 0

Oct 06/ 08 17.0 0

Oct 14/ 08 11.5 0

Oct 20/ 08 11.7 0

Oct 30/ 08 9.8 0

Nov 04/ 08 6.0 0

Nov 13/ 08 6.8 0

Nov 18/ 08 7.7 0

Nov 26/08 1.8 0

Dec 02/ 08 2.1 0

83

March Water

Date Water

Temp


July 31/ 08 N/A 39 styela

Aug 13/ 08 19.4 10 styela

Aug 21/ 08 17.7 21 styela

Sept 09/ 08 19.2 20 styela

Sept 16/ 08 N/A 11 styela


Oct 06/ 08 12.0 0

Oct 14/ 08 11.6 0

Oct 20/ 08 11.4 0

Oct 30/ 08 9.8 0

Nov 04/ 08 6.4 0

Nov 12/ 08 7.6 0

Nov 18/ 08 7.3 0

Nov 25/ 08 1.5 0

Dec 02/ 08 2.0 0

Documents

PEI Mussel Monitoring Program By · transfers, put in place by the PEI Introductions and Transfers Committee, resulted in some growers being unable to market their seed, particularly