Re: NANFA-- Devils advocate concerning release of exotics.

Christopher Scharpf (
Thu, 12 Dec 2002 07:37:11 -0400

> Lets say this fish was practically one of a kind highly unlikely to make any
> real difference if it was transplanted and by doing so we could save a unique
> species from extinction. I know this concept is new

Concept is not new. Conservation stocking, as it is called, creates "refuge
populations" and is most usually confined to fishless springs and artificial
reservoirs and ponds. Conservation stocking has most often occurred with
southwestern spring species such as pupfishes, goodeids and minnows.

The American Fisheries Society has guidelines for such releases:

Williams, J.E., D.W. Sada, and C.D. Williams. 1988. American Fisheries
Society guidelines for introductions of threatened and endangered fishes.
Fisheries 13(5): 5-11.

Chris Scharpf
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