Environmental and genetic influences on the thermal physiology of Rana sylvatica |
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Institution: | 1. Department of Behavioural Neurobiology, Max Planck Institute for Ornithology, Seewiesen, Germany;2. Research Group Evolutionary Physiology, Max Planck Institute for Ornithology, Seewiesen, Germany |
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Abstract: | - 1.1.|Intraspecific variation in the thermal physiology of Rana sylvatica was examined.
- 2.2.|Heat and cold tolerances of both adult and larval representatives were determined for animals representing populations from New York, Maryland, Kentucky, Ohio, Michigan and Canada.
- 3.3.|In general, frogs from more northern localities exhibited lower heat tolerances.
- 4.4.|There was no evidence of interpopulational differences in cold tolerance. Similar trends were revealed by larval testing.
- 5.5.|Interpopulational differences among laboratory-reared tadpoles suggests a strong genetic component to Rana sylvatica thermal physiology.
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