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Conchologists of America List <[log in to unmask]>
Date:
Wed, 28 Jan 1998 01:47:24 -0400
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From:
ross mayhew <[log in to unmask]>
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Not that more than the two eager-beavers who e-ed me seem to care, but
it seems all Muricids, Nucella lapillus included, are flesh-eaters, and
distain anything remotely resembling a vegetable.
 
        My question now is, are there families of molluscs which are split
along  vegetarian/carnivore lines?  My understanding  is that there are
fundamental differences in the radula of primary vs secondary consumers,
and that the radula is an "evolutionarily conservative" feature,
meaning  that it changes more slowly than such things as patterns,
sculpture, size, etc.  Thus, radulae amongst members of any taxonomic
unit as closely related as the "Family" level, will be similar enough to
make it  seemingly unlikely in the extreme that any Family would contain
species whose radula is specialized for carnivorie as well as relatively
unspecialized salad-munching radulae-bearing  spp.  Howev er, i
nevertheless request the list to come up with exeptions to this
supposition.  Any candidates?
 
                                                                                - Ross Mayhew

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