Hi you all,
For those interested in hybridization, I can recommend a paper by Alain
Dubois, published in the series "Mémoires du Muséum National d'Histoire
Naturelle". It is available in both English and French:
Dubois, Alain, 1988. The genus in zoology: a contribution to the theory of
evolutionary systematics. Mem. Mus. Nat. Hist. Nat., Zoologie, Tome 140.
He writes rather a lot about hybridization, viability of hybrids etc.. By
the way, hybrids do occur in nature, he gives a lot of examples, mostly on
frogs; the author is a herpetologist.
Once I wrote a paper claiming that Lambis arachnoides Shikama (syn: Lambis
wheelwrighti Greene) is a hybrid of L. truncata sebae x L. millepeda. More
Lambis hybrids are known.
Gijs
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> Van: mark <[log in to unmask]>
> Aan: [log in to unmask]
> Onderwerp: Re: Hybrids within the Cypraeidae
> Datum: vrijdag 2 oktober 1998 15:34
>
> I didn't think I would be relevant , but now as i think it over (20
minute
> pause for thought process) you're right Sir Robert. It's very interesting
> that on two completely different list serves I.E. the finch-L and the
> Conch-L are discussing such similar topics. Let me explain ; the finch
> people are truly against letting species hybridize where conch people
would
> love to have or find them , could you imagine a cross between two of your
> favorite species !! anyway the finch people believe that hybridizing is
not
> natural but i interjected that this is the basis of evolution (any
> non-Darwin types please don't take offense) as all animal families had a
> single (sometimes more then one but it's rare) common ancestor.
> a good example of multibles would be in the canine family, the original
> species is shared between the samoyed, the black retriever and a third of
> which has slipped my mind at the moment, from these 3 all others have
been
> hybridized, a doberman pintzer has schnauzer as it's base.
> As for what happened to your Cypraea eggs i would speculate only that
> mothers eat there young for a few different reasons , mice females have
been
> known to eat young when the nusery is discovered by a preditor , she
knows
> it won't give up until it eats all in the nursery so the mothetr consumes
> the babies to replenish her protien then finds a new place to raise
another
> brood. mother squirrels attack the broods of nieghboring squirrels to
> ensure her offsprings dominence and to replenish her own protien which is
> lost to her own suckling infants. as cypraea are not carnivorous i'd
guess
> that it's a case of building her own protien levels up so as to lay
another
> clutch of eggs else where . just a guess. I would have loved to seen a
diary
> of your observations concerning the raising of cypraea in an aquarium
> setting , all the best ,Mark & Peta Bethke
> Hollywood, Florida
>
> nurseriesyour cypraea mi
>
>
> ----Original Message-----
> From: Robert and Betty Lipe <[log in to unmask]>
> To: [log in to unmask] <[log in to unmask]>
> Date: Friday, October 02, 1998 7:49 AM
> Subject: Re: Hybrids within the Cypraeidae
>
>
> >Mark, why would you want to keep you knowledge private. Leaving off the
> >repeat message would help. I have to add what I have observed in my
> >living aquarium which I kept going for over 22 years. I had a Cypraea
> >zebra breed with a Cypraea cervus. This cervus laid eggs, but after
> >about a week she ate them. I watched her do it, why?
> >Bob
> >See us at http://www.theshellstore.com
> >The Shell Store
> >348 Corey Ave
> >St. Pete Beach, Fl 33706
> >(727)360-0586
> >
|
