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http://www.youtube.com/watch?v= ti0HDtRY8u4

http://www.youtube.com/watch?v= ti0HDtRY8u4. Amphibia. Courtney Johnson, Jessica MacIsaac , Kirsty Upshaw and Julia Davis. Definition. Amphibian: Means “double life”, to live in water and on land. Introduction. Subclasses Characterized by five traits Anatomy Fun Facts

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http://www.youtube.com/watch?v= ti0HDtRY8u4

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  1. http://www.youtube.com/watch?v=ti0HDtRY8u4

  2. Amphibia Courtney Johnson, Jessica MacIsaac, Kirsty Upshaw and Julia Davis

  3. Definition • Amphibian: • Means “double life”, to live in water and on land

  4. Introduction • Subclasses • Characterized by five traits • Anatomy • Fun Facts • Save The Frogs

  5. Subclasses • Caudata(Urodela) • Have tails and limbs • 360 different species • Example: Salamanders • Anura (Salientia) • Don’t have tails • 3500 different species • Example: Frogs and toads • Apoda (Gymnophiona) • Don’t have limbs • 170 different species • Examples: Worm

  6. Characterized by Five Traits • Tetrapod • Permeable skin (no scales) • Ecothermic • Gill/lung breathers • Three chambered hearts

  7. Anatomy • Heart • Three chambered heart with two atria and one ventricle • Amphibians are cold blooded (meaning their body temperature adjusts to the surrounding temperature)

  8. Anatomy • Skin • Instead of drinking water, amphibians soak it into their body through their skin • Amphibians have permeable skin which means that liquids and gases can pass through it • Most amphibians live in damp places to keep their skin from drying out • Color of their skin helps them find mates and hide from prey

  9. Anatomy • Reproductive System • Reproduce sexually • Lay eggs • Amplexus position

  10. Fun Facts • Amphibians are the only vertebrates to undergo complete metamorphosis • Amphibians can breathe through their skin and their lungs • Hundreds of millions of years ago, amphibians became the first vertebrates to live on land

  11. Save The Frogs • Save The Frogs Day April 26th • 75% of all frogs live in the rain forest • http://www.savethefrogs.com/day/

  12. References • "Fun Facts About Reptiles and Amphibians." Smithsonian National Zoological Park. N.p., n.d. Web. 23 Mar. 2014. <http://nationalzoo.si.edu/animals/reptilesamphibians/facts/>. • Chieffi, G., Rastogi, R., Milone, M., & Lela, L. A. (2009). Amphibian reproduction:reproductive physiology of the male ranaesculenta. Bollentino di zooglia, 47(1-2), 63-70. • "Amphibians." Fact Monster. Ed. Dorling Kindersley. N.p., Oct. 2013. Web. 23 Mar. 2014. <http://www.factmonster.com/dk/encyclopedia/amphibians.html>. • "How do Ontogeny, Morphology, and Physiology or Sensory Systems Constrain and Direct the Evolution of Amphibians?." American Naturalist. The University of Chicago Press, n.d. Web. 23 Mar. 2014. <http://www2.nau.edu/froggy-p/pdfs/Roth%20et%20al.%201992.pdf>.

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