Phylum: Anthropoda Subphylum: Crustacea

Sarah H & Destini T

5/19/09

2nd period

Deep sea lobster Scientific name: Puuerulus spp.

Classification

– Can be divided into these groups:– Class: Insecta(insects)– Class: Collembola (springtails) – Class: Protura (proturans) – Class: Diplura (diplurans) – Class: Myriiapoda (myriapods) – Class: Crustacea (crustaceans) – Class: Arachnida (arachnids) – Class: Pycnogonida (sea spiders) – Class: Merostomata (horshoe crabs)

Description• Variety of forms• Basic crustacea body has a number of segments• Called somites • Linked by flexible areas that allow some

movement• bilaterally symmetrical • Exoskeleton • Crustaceans have two pairs of antennae and Crustaceans have two pairs of antennae and

two pair of maxillaetwo pair of maxillae

Reproduction

• Sexual reproduction

• Sexes are separate fertilization is external in aquatic forms, internal among the terrestrial forms

• Some pathogenic

Digestive system

• digestive glands increase the surface area for digestion

• Divided into 3 main regions: foregut, midgut, and hindgut

• Hindgut is involved with water absorption

Circulatory system

• Open circulatory system

• Heart pumps blood over the brain

• Holes in the side of the heart let blood in to go around again

Respiratory

• Respiratory structures allow the arthropods to metabolize more easily and move quickly

• High metabolism rates need fast oxygen delivery, and arthropods can achieve this with respiratory organs that have a large surface area for collecting oxygen quickly

Habitat

• Live mainly in fresh water and salt water

Interactions with humans

• Used as Halloween costume

• Used for food (lobster, shrimp, and crab)

• People make a living out of catching them and selling to markets and restaurants

Unique features

• Exoskeleton

• Found in abundance within the ocean, similar to the abundance of insects on land

• Includes the spider crab: largest one ever had a leg span of 12 feet and weighed 41 pounds

Pictures

Works cited

• Encyclopedia britannica. May 20th, 2009. http://www.britannica.com/EBchecked/topic/144848/crustacean/33802/Form-and-function-of-external-features

• http://www.mun.ca/biology/scarr/142004_Arthropoda_Crustacea other pictures

• http://upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Spider_crab_at_the_Kaiyuk n_in_Osaka,_Japan.JPG/800px-Spider_crab_at_the_Kaiyukan_in_Osaka,_Japan.JPG (crab)

• http://kecute.files.wordpress.com/2007/10/baby-lobster.jpg (costume)

• http://yeinjee.com/discovery/wp-content/uploads/2007/09/poseidon-lobster.jpg lobster girl

• http://www.rammerjammeryellowhammer.com/weblog/shrimp-1.jpg shrimp picture

• http://74.125.155.132/search?q=cache:fVHn_NcJTfkJ:facstaff.gpc.edu/~apennima/Princip/Arthropoda.ppt+circulatory+system+of+arthropoda+crustacia+ppt+edu&cd=2&hl=en&ct=clnk&gl=us research