Assessing Oregon Spotted Frog Predation by Non-native Species Using DNA Analyses

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The Oregon spotted frog (OSF) is listed as federally threatened and predation by non-native species is thought to be one of the main conservation threats to this species.

Potential predators include introduced fish and the invasive American bullfrog, both of which are expanding into OSF habitats. However, little data exists on interactions between OSF and these potential predators and prior observations have relied on visual identification of prey in diet.  USGS ecologists and geneticists are partnering with the USFWS Klamath Falls Office on a new study using DNA barcoding techniques to assess frequency and patterns of predation on Oregon spotted frog. 

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Date published: September 20, 2017
Status: Active

Herpetological Research Team (FRESC)

The Herpetological Research Team focuses on issues related to conservation and management of amphibians and other aquatic and semi-aquatic species. Among our current studies are effects of invasive species, disease, and land use change on the dynamics of amphibian communities to inform conservation and management decision making.