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Posted by Tony D on February 06, 2003 at 15:10:46:
In Reply to: like i said... posted by Ike420 on February 06, 2003 at 12:41:17:
First, the snakehead thing in MD and VA was WAY blown out of proportion. Pest control consultants made some good cabbage on it though.
Second, if hybridization conferred any survival advantage it would be seen more often in nature. Hybrids at worst are eventually absorbed by the local gene pool. In this scenario the only loss is that of an over blown notion of purity which as hybrids occasionally pop up in nature, never existed in the first place.
Second, not all introduced species persist to disrupt ecosystems. Disruptive species are those that alter habitat, experience insufficient predation pressures, are aggressive and out compete native species or are high tropic level predators from which native prey species have evolved no defense. These concerns would apply to escaped or released "pure" animals as well so why finger only hybrids?