arthropoda crustacea
TRANSCRIPT
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Phylum: Anthropoda Subphylum: Crustacea
Sarah H & Destini T
5/19/09
2nd period
Deep sea lobster Scientific name: Puuerulus spp.
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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)
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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
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Reproduction
• Sexual reproduction
• Sexes are separate fertilization is external in aquatic forms, internal among the terrestrial forms
• Some pathogenic
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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
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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
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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
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Habitat
• Live mainly in fresh water and salt water
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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
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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
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Pictures
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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