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Re: Re: NFC: DP returning fish to the wild
Daryl wrote:
>though adding to genetic diversity may be percieved in the positive, as has
>been pointed out, it also works in the other direction. the additions to an
>existing gene pool can also be weeker and less resistant to disease and
>therefore weeken the existing population. it seems not worth the risk : )
Incorrect - remember that we are talking about a "population" and not
individuals in the population. In a population, the addition of new genes
to a population (i.e., disease resistance genes, growth genes) increases
the "overall" genetic makeup of the population. Addition of genes that are
considered "weak" in one genetically shallow population, added to a
genetically diverse population, will probably never be seen; based on
genetic statisticts.
Again, this is a pure genetic stance - not a plea for release into the
wild. I am in agreement with you all that release of natives into a
non-indigenous site is wrong. But, genetically, increased variation in a
population maintains a healthy population. This is why dogs and cats from
the pound (inbred animals) tend to be healthier and devoid of the common
small animal diseases and genetic defects.
__________________________________________________________
Matthew T. Mason
Doctoral Student
The Ohio State University
Department of Molecular Genetics
mason.163 at osu_edu
The most absurd and reckless aspirations have sometimes led to
extraordinary success.
--Vauvenargues
References: