Embed Size (px)
Citation preview
The Anatomy of the
Salmon...
Learning IntentionsWe Are Learning To ...
• Identify the different parts of the salmon.
• Explore how salmon are suited to their environment.
Key WordsGills
Eyes
Head
Fins
Nostrils
Mouth
Tail
Scales
Pectoral
Pelvic
Anal
Dorsal
Adipose
Lateral
Line
Background Information
ALL fish have
4 things in
common ...
They have...
Gills
A flexible backbone
Coldblood
Fins
Let’s take a
closer look at
the salmon...
Salmon
have 6 bony
fins...
2 pectoral fins near the head
2 pelvic fins on the belly
1 anal fin behind the belly
1 dorsal fin on the centre of the back
(Plus 1 small, fatty adipose fin)
And a tail
Salmon also
have...
eyesnostrils
mouth &
teethgillsA line of special cells-
lateral line
scales
Now we have learned
about the anatomy of
the salmon...how do
these enable the salmon
to survive?
gills The salmon takes water into its mouth and pushes it out through the gills. The blood vessels in the gills extract oxygen dissolved in the water as it is pushed out through the gills.
Allowing the salmon to breathe
nostrils
The salmon uses its nostrils to smell scents in the water, to sense danger and also recognise the familiar sent of their home stream.
Allowing the salmon to smell and helps with safety and navigation
Scales and skin cover the salmon. Scales are small, hard plates which
over-lap and protect the salmon from predators and bruising.
The lateral line is a line of cells along each side of the salmon which is extremely
sensitive to pressure and allow the salmon to sense
movements and objects in the water.
Scales begin to grow when salmon are very young and show annual growth
rings, like trees. If scales fall off, salmon are able to grow new scales.
The 6 bony fins on the salmon aid with the salmon’s balance and
steering.
The tail fin also helps the salmon push through the water. Female salmon use the tail fin to dig the redd in which they lay their eggs.
Did You Know...
The small, fatty adipose fin is cut off by the salmon farmers at
the River Bush fisheries in Bushmills in order to identify their fish from other Atlantic
salmon.
Final case to
solve...what do
salmon eat?
What is on the menu for the
salmon tonight?
Menu
Young
salmo
n
Adult salmon
Plankton
Insects& otherinvertebrates
Eels
Shrimp
& otherSmallfish
Well done!You have now learned about the anatomy of the salmon and how it
is suited to its environment. .
Why not take the anatomy quiz to
test your knowledge?
