On Fri, 29 Mar 1996, Cynthia.Teague wrote:
> I do have some doubts about the practicality of the whole captive =
maintenance
> thing when done outside an organized framework. Some years ago, I =
spent time
> figuring out the numbers of fishes involved in attempting to maintain =
a
> certain level of genetic diversity over a long period of time; the =
results
> were staggering. It seems to me that most people who were trying to =
maintain
> a species would either end up doing too much inbreeding, or would swap =
with
> only a couple of other aquarists, effectively creating one population =
pool
> which would in itself be subject to too much inbreeding fairly soon as =
well.
On Mon, 1 April, Peter Unmack wrote:
A further note on inbreeding. What's better, to maintain a fish in=20
captivity with perhaps a 20% loss in genetic diversity, or to lose 100%=20
of it's genetic diversity when it goes extinct in the wild when no=20
captive stocks are kept? =20
Hooroo
I would like to asked another question - how much genetic imprinting is =
species orientated and how much is environmentally acquired? Once =
captive populations are returned to their natural environment will they =
over a number of generations regain the genetic diversity lost in =
captive populations?
Adrian Tappin.
Peter
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