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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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Amphibians l.jpg

Amphibians

By Jennifer Baer


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Kingdom

Phylum

Class

Animalia

Chordata

Amphibia

Classification


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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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Examples (Orders) of Amphibians

  • Frogs

    • Treefrog


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Examples of Amphibians

  • Salamander


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Examples of Amphibians

  • Caecilians

    • Tropical (NOT in U.S.)

    • Limbless

    • Secretive


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Habitat

  • Moist


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Habitat

  • Shaded


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Characteristics

  • Skin is

  • Moist and

  • Clammy

  • Slimy

  • Function of skin

  • Gas Exchange

  • Protection


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Life Cycle

  • Eggs are deposited in_______ where the male __________ them.


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Life Cycle

  • Larva have ________ and a ________.


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Life Cycle

  • Adults have __________.


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Life Cycle

What % of amphibians follow this life cycle?

  • 10%

_________

_________

_________


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Life Cycle

Hatch

Larva

Egg

Reproduction

External fertilization

Adult

Metamophose


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Species in Oregon

32 species of Amphibians in Oregon


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Species in Oregon

  • Pacific Treefrog

    • Native to Oregon

    • Where can you find larvae?

    • Time to mature

    • Sound

      • Listen!


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Species in Oregon

Red-legged Frog


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Red-legged Frog

  • Field trip to Strube

    • Lay eggs Jan/Feb

    • Pond characteristics

  • Will not hear

  • Jump into water if startled

  • Healthy population


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Red-legged Frog

  • Egg mass

  • What affects survival rate?

  • Drying out

  • Temperature

  • Oxygen

  • Pollution

  • Predators

  • Survival rate 1%


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Red-legged Frog predators

NW Salamander

Common Garter Snake


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Red-legged Frog Diet

  • Eggs eat

    • yolk

  • Tadpoles eat

    • yolk, detritus, algae

  • Adults eat

    • insects


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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


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Bullfrog

  • Female lays 6,000 to 20,000 eggs!

  • Eggs hatch 4-5 days

  • Larvae overwinter

  • Chorus

    • Listen!


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Species in Oregon

  • Long-toed Salamander

  • Habitat: desert, meadows, forest

  • Life cycle

    • spermatophore

  • Eat

  • Predators


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Species in Oregon

  • Roughskin Newt

  • Range: W. Oregon

  • Habitat: forest

  • Life cycle


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Newt—Poisonous!!

  • Defense mechanisms

    • Color

    • Poison glands

    • Posturing

  • Evolutionary arm’s race with garter snake.

  • Predators: Common Garter Snake


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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


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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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