Migration strategies

[rudy benavides]

****************************************************8
>From: "Cris Guppy or Aud Fischer" <cguppy at quesnelbc.com>
>Date: Sun, 14 Jan 2001 22:22:16 -0800
>
>I agree with Phil Schappert's definition. I think uni-directional movement,
>without a return trip, can be migration if it fits the definition. However,
>in that case the interesting evolutionary question arises: If migration
>occurs in only one direction, it is 100% fatal as far as the remaining
>portion of the population that did not migrate is concerned. So why would
>the trait of migration remain within the population?
************************************************************>
Interesting question.  I can think of a scenario where they do their
principle business of mating and laying their eggs, and then heading south
to retire.  The benefit to the population left behind would be less
competition for nectar.  My guess only.
 
Rudy Benavides
Maryland
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