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The Crustaceans -- Marine Arthopods & their Relatives

The Crustaceans -- Marine Arthopods & their Relatives. February 10, 2009. ALL ARTHROPODS …. are covered with an exoskeleton are bilaterally symmetrical have a segmented body have jointed appendages molt. The overwhelming majority of marine arthropods are CRUSTACEANS.

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The Crustaceans -- Marine Arthopods & their Relatives

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  1. The Crustaceans --Marine Arthopods & their Relatives February 10, 2009

  2. ALL ARTHROPODS … are covered with an exoskeleton are bilaterally symmetrical have a segmented body have jointed appendages molt The overwhelming majority of marine arthropods are CRUSTACEANS.

  3. What is the difference between an exoskeleton and an endoskeleton?

  4. What does it mean when a crustacean molts? Video of blue crab moulting Because they must carry it around, the heavy, rigid exoskeleton of crustaceans limits their growth. Most are small.

  5. Barnacles vs. Copepods Planktonic larvae; sessile adults Filter feeders Planktonic Some filterers; some parasitic

  6. How can you tell the difference between an amphipod and an isopod? Amphipods – Laterally compressed Isopods – Dorsoventrally flattened

  7. Giant Isopods- Yikes!

  8. What is the significance of krill to the food chains in polar waters? Antarctic Krill Provide Carbon Sink In Southern Ocean ScienceDaily (Feb. 6, 2006) — New research on Antarctic krill (Euphausia superba), a shrimp-like animal at the heart of the Southern Ocean food chain, reveals behaviour that shows that they absorb and transfer more carbon from the Earth's surface than was previously understood.

  9. Decapods • The word decapod means “ten legs.” • This group includes: • Lobsters & crayfish • Shrimps • Hermit crabs • True crabs

  10. The Decapod Body Plan cephalothorax abdomen

  11. How can you tell the difference between a male and female true crab? Blue Crab Abdomens As you can see highlighted in red, the aprons allow you to quickly determine the gender and maturity of the blue crab.

  12. Male - “Jimmy”

  13. Immature Female – “Sally”

  14. Mature Female – “Sook”

  15. What is the difference between a maxilliped and a pereopod? Specialized for walking 5 pairs, first modified into claws called chelipeds Maxillipeds Specialized for bringing food to the mouth, ripping, tearing, and eating. 3 pairs Pereopods

  16. Swimming Crabs Clockwise from top left: common swimming crab, ocellated swimming crab, chocolate brown swimming crab

  17. Circulation and Respiration open • Crustaceans have a(n) ____________ circulatory system and rely on _____________ to exchange gases with their surroundings. gills

  18. Work Cited Anderson, Genny. Buckshot barnacle. Marine Science: The Splash Zone. 26 June 2003. 9 Feb. 2009 <http://www.marinebio.net/marinescience/03ecology/flimg/02804buk5466.jpg>. "Antarctic Krill Provide Carbon Sink In Southern Ocean." Science Daily: News & Articles in Science, Health, Environment & Technology. 6 Feb. 2006. British Antarctic Survey. 09 Feb. 2009 <http://www.sciencedaily.com/releases/2006/02/060206230630.htm>. Brooks, Cassandra. "Zooplankton Soup | Ice Stories: Dispatches From Polar Scientists." Exploratorium. 15 Mar. 2008. 09 Feb. 2009 <http://icestories.exploratorium.edu/dispatches/zooplankton-soup/>. Copepod shortly before oviposition. Research Activities in the Haus des Meeres. Haus de Meeres - Aqua Terra Zoo. 9 Feb. 2009 <http://www.haus-des-meeres.at/forschung/7_copepod.jpg>. Dr. EckartPott/Bruce Coleman Ltd. Common swimming crab (Portunusholsatus), showing its paddle-shaped feet. Encyclopedia Britannica. 10 Feb. 2009 <http://www.britannica.com/EBchecked/topic-art/577077/9685/Common-swimming-crab-showing-its-paddle-shaped-feet>. Human_endoskeleton. Hermit crab housing: Part 1: how and why, physical. 9 July 2008. Affordable Housing Institute: U.S. 9 Feb. 2009 <http://affordablehousinginstitute.org/blogs/us/wp-content/uploads/imageshuman-endoskeleton->. Ironman. Power Suits and Bionic Bones. 2009. How stuff works express. 9 Feb. 2009 <http://express.howstuffworks.com/gif/express-exoskeleton-ironman.jpg>. "Krill Discovered Living In The Antarctic Abyss." Science Daily: News & Articles in Science, Health, Environment & Technology. 26 Feb. 2008. British Antarctic Survey. 09 Feb. 2009 <http://www.sciencedaily.com/releases/2008/02/080225122334.htm>. Lobster. How stuff works express. 2009. 9 Feb. 2009 <http://express.howstuffworks.com/gif/express-exoskeleton-lobster.jpg>. "Lysianassid Amphipod &mdash; ::Centre for Marine Biodiversity::." ::Centre for Marine Biodiversity:: &mdash; ::Centre for Marine Biodiversity::. 09 Feb. 2009 <http://www.marinebiodiversity.ca/cmb/Photo%20galleries/atlantic-benthic-invertebrates/picture10.jpg/view>. MacDiarmid, Alison. Crayfish moulting. Crabs, crayfish, and other crustaceans. 21 Sept. 2007. Te-Ara The Encyclopedia of New Zealand. 9 Feb. 2009 <http://www.teara.govt.nz/EarthSeaAndSky/SeaLife/CrabsCrayfishAndOtherCrustaceans/1/ENZ-Resources/Standard/2/en>. Matuta / Ashtoret (always confusing these two), Madagascar. Flickr.com. 24 July 2008. Lunar crab's friendly face. 10 Feb. 2009 <http://flickr.com/photos/80125969@N00/2699936081/>. "Nauplius Larva of a Barnacle, Light micrograph of Nauplius larva of a barnacle at a magnification of x100., &Acirc;&copy; Visuals Unlimited/Corbis, RM, Animals, Barnacle, Biology, Color effect, Crustacean, False color, Invertebrate, Larva, Life science, Microbiology, Micrography, Natural science, Natural sciences, Nobody, One animal, Plankton, Science, Sciences, Zoology, Zooplankton." Stock photography, footage, rights: Corbis. 09 Feb. 2009 <http://pro.corbis.com/search/Enlargement.aspx?CID=isg&mediauid=%7B0D5B64B4-F4F1-4B15-A2AD-989C3C0AB8F7%7D>. Orstan, Aydin. "An isopod from Canada: Procelliospinicornis." Weblog post. Snail's Tails. 22 Oct. 2007. 9 Feb. 2009 <http://snailstales.blogspot.com/2007/10/isopod-from-canada-porcellio.html>. Palaemonpacificus. Key to Aquatic Arthropods. 2008. AECOS, Inc. 10 Feb. 2009 <http://www.aecos.com/CPIE/Palaemon_pacificus.jpg>. SPLASH Protecting Water and Habitat Through Education. 09 Feb. 2009 <http://www.sacsplash.org/cimages/copepod2.jpg>. Swimming crab (Thalamita sp.). Flickr.com. 10 Feb. 2009 <http://flickr.com/photos/wildsingapore/427830551/>. T-800 Endoskeleton Cinemaquette. RTM News. 2009. Raving Toy Maniac. 9 Feb. 2009 <http://www.toymania.com/news/images/1205_t800.jpg>. Two-eyed or ocellate swimming crab (Portunussebae), Caribbean coast of Panama. Flickr.com. 10 Feb. 2009 <Two-eyed or ocellate swimming crab (Portunussebae), Caribbean coast of Panama>. Underside of giant isopod. Ocean Explorer. 11 July 2005. National Oceanic and Atmospheric Association: United States Department of Commerce. 9 Feb. 2009 <http://oceanexplorer.noaa.gov/explorations/02mexico/logs/oct13/media/isopod.html>. Zinski, Steven C. "BLUECRAB.INFO - Blue Crab Identification." BLUECRAB.INFO - The Blue Crab Archives. 2006. 09 Feb. 2009 <http://www.bluecrab.info/identification.html>.

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