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Life Sciences Commons

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Animal Sciences

Dissertations and Theses

Theses/Dissertations

2017

Animal behavior -- Age factors

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Full-Text Articles in Life Sciences

Quantifying The Impacts Of A Novel Predator: The Distinctive Case Of The Oregon Spotted Frog (Rana Pretiosa) And The Invasive American Bullfrog (Rana (Aquarana) Catesbeiana), Kyle Scott Tidwell Mar 2017

Quantifying The Impacts Of A Novel Predator: The Distinctive Case Of The Oregon Spotted Frog (Rana Pretiosa) And The Invasive American Bullfrog (Rana (Aquarana) Catesbeiana), Kyle Scott Tidwell

Dissertations and Theses

The decline of the Oregon Spotted Frog (Rana pretiosa), a Pacific Northwest endemic now federally listed as threatened, has been attributed to several aspects of ecosystem alteration, primarily habitat degradation and loss. The introduced American Bullfrog (Rana (Aquarana) catesbeiana) has been widely implicated in those declines, but the basis of that contention has been difficult to characterize. The bullfrog occurring at every site of recent Oregon Spotted Frog extirpation has focused concern about its impact.

Here, I present a suite of interconnected studies that examine the behavioral ecology of both species to better understand the potential …