Re: NANFA-- Schreckstoff (was Creek Chub Removal_

unclescott (
Wed, 10 Sep 2003 00:02:48 -0500

> I find it intriguing that a
> chemical warning system is so conserved within a superorder that
> disparate species may get confused by another species signal.

Would the schreckstoff be different for different species or species groups?
Don't pheromones differ by species?

Thinking of scents and mammals, parents can tell offspring from others.

Is the sence of smell that developed in fish? Some fish (salmon, shad) are
famous for scenting the right waters for their spawning runs. Can fish
delineate their species from other species and/or their fry from other fry?

Thanks again!

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