Gijs,
I would think that there have to be examples of what you are talking about -
even if rare. But, the reptiles were the only ones I could come up with.
I just picked up my first specimen of Strombus aurora - very nice! It is
good to see folks still interested in this family. Now I have to get back
to my nerites.
Tom
> -----Original Message-----
> From: Conchologists of America List [mailto:[log in to unmask]]On
> Behalf Of Gijs C. Kronenberg
> Sent: Monday, March 22, 2004 12:04 PM
> To: [log in to unmask]
> Subject: Re: hybrids, Lambis, population
>
>
> Dear Tom,
>
> Dr. Campbell did mention a few: Sphaeridae (Bivalvia) are parthenogenetic,
> and I once read [have to look up the reference] a paper on a fresh water
> gastropod where males are extremely rare, and parthenogenesis is
> very likely
> [if not a rule]
>
> If the lizards don't read or understand our textbooks (rule books) and go
> about life in an unexpected fashion they should be wiped
> out........[sorry,
> joke].
>
> So, it appears that we have an example, but this seems to be a ver rare
> occasion with some "special" conditions; i.e. parthenogenesis after
> hybridisation. I understand that within reptiles parthenogenesis arose
> several times independantly, so why not in a hybrid..
> But what I was looking for was a hybrid population of males and females
> which was self sustaining, i.e. after mating, fertilisation etc. for some
> generations.
>
> Gijs
>
>
> ----- Original Message -----
> From: "Thomas E. Eichhorst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, March 21, 2004 4:17 PM
> Subject: Re: hybrids, Lambis, population
>
>
> > Gijs,
> >
> > I believe the parthenogentic part was in reference to the hybrid that is
> now
> > a species. Where I live we have Cnemidophoorus neomexicanus Lowe &
> Zweifel,
> > 1952 (the New Mexican whiptail lizard). The NM whiptail is an
> "allodiploid
> > parthenogenotic" species that was originally created through
> hybridization
> > between C. inornatus (the paternal parent) and C. tigris marmoratus (the
> > maternal parent). C. neomexicanus is a viable species that reproduces
> > parthenogenitically - the females lay eggs that are always female. No
> males
> > involved. As for other hybrids sucessfully breeding, I believe this has
> > happened in reptiles. Sometimes these animals just don't read or
> understand
> > our textbooks (rule books) and go about life in an unexpected fashion.
> > There are a number of parthenogenitic reptiles, but I have yet
> to hear of
> > such in the Mollusca (a problem of observation maybe?).
> >
> > Tom Eichhorst in New Mexico, USA (where it was 82 degrees F yesterday, a
> new
> > record)
> >
>
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