Transcript Document
The Squid Click Here to Begin Table of Contents • • • • • • • Cover Page Classification Habitat Predators and Prey Anatomy and Physiology Threats to the Squid Works Cited Classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Teuthida Family, Genus, There are over 300 & Species: known species of squid, coming in all shapes and sizes. Bathyteuthis abyssicola Onychoteuthis banksii Pterygioteuthis giardi Habitat The habitat of the squid depends on the species, size, and stage of development the squid is in. Squid can be found in almost any salt water region of the world in both the shallows and in depths up to 9,000m. However, some species have been known to move into fresh water in search of food. Learn more about the Giant Squid and why it has been so illusive to scientists. CLICK THE IMAGE ABOVE. Predators & Prey Predators Prey • Squid are precious food sources for large fish, sea birds, sharks, and even sperm whales • Squid is served as a delicacy in many parts of the world, where it is referred to as Calamari • Squid dine mostly on fish, crustaceans such as shrimp, and other squid • See a squid in action by clicking on the image below: Anatomy & Physiology Feeding and Digestion • Squid have 8 legs • Squid grab prey with suction clubs on the end of the tentacles and pulling them into their legs. • Stab prey with sharp beaks • Prey is further broken down by the radula • Once the food is shredded, their muscular tongue helps direct it down the digestive tract. Other Important Structures • Mantle covers the body – Gill like slits for respiration – Contains a siphon for jet propulsion • Skin covered in chromatophores – Change color to match surrounding • Ink sac provides further protection See the amazing camouflaging abilities and use of ink glands in cephalopods by click on the picture above. Ecological Threats to Squid • The main threat to squid is commercial fishing – Overharvesting mature squid populations – Fishing boats can destroy squid egg deposits Squid Harvest on US West Coast Works Cited • Fish Watch: Market Squid. 2011. National Oceanic and Atmospheric Administration. http://www.nmfs.noaa.gov/fishwatch/species/market_squid.htm • Octopus and Squid. 2011. World Wildlife Federation. 17 Feb. 2012. http://www.treasuresofthesea.org.nz/octopus-and-squid#5 • Rare Photos: Giant Squid Eaten by Sperm Whale. 2012. National Geographic. http://news.nationalgeographic.com/news/2009/10/photogalleries/giantsquid-sperm-whale-pictures/ • Squid. 2012. Exploring Nature Educational Resource. 17 Feb. 2012. http://www.exploringnature.org/db/detail.php?dbID=43&detID=2796 • Squid Fact and Information. 2009. Squid World. http://www.squidworld.com/squid-predators.html