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From: gagen@bgsuvax.UUCP (kathleen gagen)
Newsgroups: sci.bio
Subject: Re: An All Female Species of Fish!
Message-ID: <862@bgsuvax.UUCP>
Date: Mon, 4-May-87 14:06:13 EDT
Article-I.D.: bgsuvax.862
Posted: Mon May  4 14:06:13 1987
Date-Received: Wed, 6-May-87 00:39:44 EDT
References: <1055@thebes.UUCP> <9576@duke.cs.duke.edu>
Organization: Bowling Green State University B.G., Oh.
Lines: 24
Summary: gynogeny

In article <9576@duke.cs.duke.edu>, evs@duke.cs.duke.edu (Ed Simpson) writes:
> In article <1055@thebes.UUCP> greenber@swatsun (Peter Greenberg) writes:
> >Oh, by the way, this phenomenon, called gynogeny, I think, is not wholly 
> >comfined to the Amazon molly. It is also found in some species of lizards in
> >the desert southwest. I have its name in my aforementioned notes.  
> 
There are a variety of organisms that reproduce parthenogenically.  The round
worm C. elegans, use frequently in the study of developmental genetics, is
one example.  Each C. elegans individual is a self-fertilizing hermaphrodite.
Occasionally, a male is produced.

Another example is the laboratory-produced "lazy girl" stock of Drosophila
(the common fruit fly).  The "lazy girls" are parthenogenic females that
have been derived from normally reproducing stocks.  They differ from their
"parent" strain in both morphology and behavior.  For these reasons, and
the criterion or reproductive isolation, this strain can be thought of as
a separate species.

____________

Kathi Gagen                                 gagen@bgsuvax.uucp
Dept. of Biological Sciences                ....bgsuvax!gagen
Bowling Green State University
Bowling Green, Ohio