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Holothuroidea

Holothuroidea. LUKE Edgar, Colton Burke & Justin Robar. Taxon. Kingdom: Animalia Phylum: Echinodermata Class: Holothuroidea Order: Apodida , Elasipodida , Aspidochirotida , Molpadiida , Dendrochirotida , Dactylochirotida. Sea Cucumber. Characteristics.

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Holothuroidea

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  1. Holothuroidea LUKE Edgar, Colton Burke & Justin Robar

  2. Taxon • Kingdom: Animalia • Phylum: Echinodermata • Class: Holothuroidea • Order: Apodida, Elasipodida, Aspidochirotida, Molpadiida, Dendrochirotida, Dactylochirotida

  3. Sea Cucumber

  4. Characteristics • Soft bodied echinoderm, invertebrate • Decomposer • 20cm on average, ranging 1cm to 3.6m • 1716 different species • Tube feet

  5. Evolution • 400 million years ago (Lower Devonian Period) • Evolved from Ophiocistioids (Paleozoic Era) • Poor fossil records, ossicles

  6. Distinctive Characteristics • Respiratory trees • Evisceration to deter predators or seasonally • Calcite rings around pharynx • Oracle tentacles • Ossicles are primary bone structure

  7. Video • http://www.youtube.com/watch?v=aCxKFc3XtJs

  8. Life Cycle • Reproduce sexually through broadcast spawning • Asexual reproduction, regeneration, protandric • Zygote Larvae Adult (Metamorphosis) • Sexual Dimorphism • 5-10 year lifespan

  9. Fun Facts • Pharmaceutical toxins • Gourmet food item in orient • Fish & octopiibait • Tubules used as bandages • Commensalism, pearl fish

  10. Works Cited • Mah, Christopher. The Echinoblog. n.p., 7 Aug. 2012. Web. 20 Mar. 2014. • Hui, KaWai. Sea Cucumber- Holothuriapardalis. The University of Wisconsin La Crosse, Apr. 2008. Web. 20 Mar. 2014. • Kerr, Alexander. Holothuroidea. Version 1. Tree of Life, Dec. 2000. Web. 20 Mar. 2014. • Bordbar, Sara et al. High-Value Components and Bioactives from Sea Cucumbers for Functional Foods—A Review. The National Center for Biotechnology Information, 10 Oct. 2011.Web. 20 Mar. 2014. • Paulay, Gustav. WoRMS taxon details: Holothuroidea. World Register of Marine Species, 8 Dec. 2013. Web. 29 Mar. 2014. • Mulcrone, Renee. Animal Diversity Web: Holothuroidea. University of Michigan Museum of Zoology, 2005. Web. 29 Mar. 2014. • Waggoner, Ben, and Brian Speer. The Holothuroidea. University of California Museum of Paleontology, 1994. Web. 29 Mar. 2014. • “Sea cucumber.” Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc. 26 Mar. 2014. Web. 30 Mar. 2014.

  11. Questions?

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