Bilateral colour asymmetry
hampton at hawaii.edu
Tue Oct 22 16:51:15 EST 1996
What you have described is very likely to be a genetic mosaic from the
time of fertilization. Lots of these are known in Drosophila of different
species.The bilateral asymnmetry you have described, on a strict saggital
line, is well known.
Color patterns of lobsters would be an interesting research
topic. The land crab, Gecarcinus ruricola, a land crab from the Caribbean
has incredible color polymorphism among adults buts nothing is known about
With Aloha from
On Tue, 22 Oct 1996, Geoff Ralling wrote:
> I believe this group might be able to answer my questions about an unusual
> lobster since drosophila types are interested in genes for body symmetry.
> I work at the University of Prince Edward Island which houses the Atlantic
> Veterinary College. In one of the student demonstration tanks is an Atlantic
> Lobster which shows complete bilateral colour asymmetry. I have two questions:
> What sort of mutation would cause this? I can only think of a somatic
> mutation in a colour gene occuring early in the development of the embryo.
> Can someone support this or suggest an alternative?
> Has anyone ever heard of or seen such a thing in any animal? This
> creature is wild-type colour on the RHS and bright red on the LHS with a razor
> sharp line down its midline dividing left and right. Bright red colour
> mutants are occasionally caught around here but this left-right asymmetrical
> is in my view spectacular. It hasn't seemed to impress anyone else though.
> Thanks for any insights. Hope this is an appropriate group.
> Geoff Ralling
> University of Prince Edward Island
> ralling at upei.ca
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