Utric's and daphnia speculation

From: Howard J. Wu L.Ac (mrwu@cello.qnet.com)
Date: Tue May 16 2000 - 15:42:31 PDT


Date:          Tue, 16 May 2000 22:42:31 +0000
From: <mrwu@cello.qnet.com>(Howard J. Wu  L.Ac)
To: cp@opus.hpl.hp.com
Message-Id: <aabcdefg1570$foo@default>
Subject:       Utric's and daphnia speculation


>I was looking through a CP book (can't remember which one) and saw a
>photo of an aquatic Utric trap and a water flea side by side. The
>similarity between the two was remarkable from their shape to the
>branches at the top of the head.
>
>Is there some kind of mimicry going on here? If so which one is
>doing the mimicing?
>
>Has anybody else noticed this before?
>
>Bruce
>
>Bruce Salmon 13 Rothery Road Manurewa Auckland 1702 New Zealand
>
Perhaps this is an example of evolutionary convergence based on function.
Thus both utrics and daphnia feeding on smaller prey may have developed
filter feeding structures roughly comparable because it works.
    ---------------------------
    = Howard Wu =
    = Bishop, CA =
    = mrwu@qnet.com =
    ---------------------------



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