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Amphibians

Amphibians. By Jennifer Baer. Kingdom Phylum Class. Animalia Chordata Amphibia. Classification. Give (2 min.) List everything you know. Consider characteristics, habitat, food and examples of animals. Get (4 min.) List ideas from classmates. Give One, Get One.

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Amphibians

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  1. Amphibians By Jennifer Baer

  2. Kingdom Phylum Class Animalia Chordata Amphibia Classification

  3. Give (2 min.) List everything you know. Consider characteristics, habitat, food and examples of animals Get (4 min.) List ideas from classmates. Give One, Get One

  4. Examples (Orders) of Amphibians • Frogs • Treefrog

  5. Examples of Amphibians • Salamander

  6. Examples of Amphibians • Caecilians • Tropical (NOT in U.S.) • Limbless • Secretive

  7. Habitat • Moist

  8. Habitat • Shaded

  9. Characteristics • Skin is • Moist and • Clammy • Slimy • Function of skin • Gas Exchange • Protection

  10. Life Cycle • Eggs are deposited in_______ where the male __________ them.

  11. Life Cycle • Larva have ________ and a ________.

  12. Life Cycle • Adults have __________.

  13. Life Cycle What % of amphibians follow this life cycle? • 10% _________ _________ _________

  14. Life Cycle Hatch Larva Egg Reproduction External fertilization Adult Metamophose

  15. Species in Oregon 32 species of Amphibians in Oregon

  16. Species in Oregon • Pacific Treefrog • Native to Oregon • Where can you find larvae? • Time to mature • Sound • Listen!

  17. Species in Oregon Red-legged Frog

  18. Red-legged Frog • Field trip to Strube • Lay eggs Jan/Feb • Pond characteristics • Will not hear • Jump into water if startled • Healthy population

  19. Red-legged Frog • Egg mass • What affects survival rate? • Drying out • Temperature • Oxygen • Pollution • Predators • Survival rate 1%

  20. Red-legged Frog predators NW Salamander Common Garter Snake

  21. Red-legged Frog Diet • Eggs eat • yolk • Tadpoles eat • yolk, detritus, algae • Adults eat • insects

  22. Invasive predator • Bullfrog • Where did it come from? • Range in Oregon • What is the problem? • Eats egg masses • Which eggs are safe? • Ponds that dry up

  23. Bullfrog • Female lays 6,000 to 20,000 eggs! • Eggs hatch 4-5 days • Larvae overwinter • Chorus • Listen!

  24. Species in Oregon • Long-toed Salamander • Habitat: desert, meadows, forest • Life cycle • spermatophore • Eat • Predators

  25. Species in Oregon • Roughskin Newt • Range: W. Oregon • Habitat: forest • Life cycle

  26. Newt—Poisonous!! • Defense mechanisms • Color • Poison glands • Posturing • Evolutionary arm’s race with garter snake. • Predators: Common Garter Snake

  27. Best Bets for Viewing • Treefrog: Amazon Creek; Pisgah ditches • Red-legged Frog: Strube field trip • NW Salamander: Strube field trip (eggs); Camp Creek & other McKenzie tributaries (larvae) • Bullfrog: Oxbows, Willamette R.… • Long-toed Salamander: Thurston Road, ponds at W. Eugene Wetland Interpretative Center • Newt: coastal trails in winter

  28. Credits • Tom Titus, University of Oregon • http://sps.k12.ar.us/massengale/amphibian_notes_bihtm • http://www.lensjoy.com/gallery/62.htm • http://www.tarleton.edu/!range/ • http://www.uoguelph.ca/zoology/devobio/210labs/epithelial1.html • M. Gregory: http://web.uvic.ca/bullfrogs/ra.htm • http://www.naturesongs.com/otheranimals.html

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