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6 Cards in this Set
- Front
- Back
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FORAGING
-tadpoles -adults- and adaptions |
- herbivory in tadpoles, but some are carnivores
- shift to carnivore in adults- major reduction in size of intestinal tract, binocular vision, tongue protrusion mechanisms, and large mouth for large prey |
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study of tadpoles under low temp and low food conditions..... results?
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low temp and low food = extended larval stage
low temp= long legged with lower degree of ossification low food= short legged with higher degree of ossification |
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GLOBAL DISTRIBUTION OF AMPHIBIANS
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-widespread but no native species in extremely cold or warm areas- desert, arctic, etc etc.
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where is the western toad found?
where is the columbia spotted frog found? where is the wood frog found? where is the coastal tailed frog found? where is the pacific treefrog found? |
-wet forest to grassland
-wet forests, sage bushland, alpine tundra -marshes, wet grass -near water in damp forests- along west coast - on the ground, among shrubs, close to water |
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study- cannibalistic tadpoles
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will most likely discriminate kin
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Life cycle of a typical salamander
-less derived reproduce as so.. -more derived reproduce as so.. -what is paedomorphosis or neoteny -which ones give live birth |
- less derived groups have external fertilization
-more derived groups use spermatophore and internal fertilization -paedomorphosis or neoteny- retention of larval features in adult stage - european salamanders |
