RE: NANFA-- looking for exotic frog damage articles

Jay DeLong (
Fri, 3 Mar 2000 09:49:18 -0800

> One of my sons classes is studying reptiles and amphibians. One of the
> suggested at home activities is to buy a tadpole from a local pet shop,
> watch it develop into a frog, then let it loose in an appropriate place.
> Urgh!
> So I would like to print out some articles about the damage that exotic
> frogs can do on local native animal populations. Could anyone direct me
> to any URL's that have such articles? Or if not maybe general articles
> on releasing exotic animals into native populations?

This is kinda general, but it mentions bullfrogs and comes from a site
dedicated to the Sonoran desert:

Bullfrogs: Introduced Predators in Southwestern Wetlands at which is about the Red-legged Frog
and that refers to "...their exclusion from permanent aquatic habitats by
introduced predators (fish and bullfrogs Rana catesbeiana)"., Spotted Frogs in the
Western Pacific Northwest, which states "Nonindigenous bullfrogs are
probably a primary cause of declining populations of spotted frogs".

This is one overview of the introduced species issue:

And is about introduced species in
Florida. The section on reptiles and amphibians has a few examples and the
literature cited list is pretty large.

I think that's a nice effort on your part, Rhonda.

Jay DeLong
Olympia, WA

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