RE: [Killietalk] F0 designation

["Brian R. Watters" <bwatters at sasktel_net>]

Wright Huntley wrote:

>
> In Biology, the parent generation of a given "strain" or whatever, is
> always P0 (for *Parentis*) and the next generation is F1 (for first
> *Filius* generation). It doesn't matter whether wild or not, the parent
> generation is designated PO of any group you want to keep subsequent
> track of.
>

I am no expert on these matters but what you say above is not consistent
with Coad and McAllister in the reference I provided in my previous message.
According to these ichthylogists:

F0 = a wild-caught fish kept in captivity; the parental generation in a
breedng programme.

F1 = first filial; a fish one generation away from the parental generation,
one generation removed from wild-caught fish in a breeding programme.

F2 = second filial; and so on as above.

F1(subscript 1) = the offspring resulting from a parent cross, the first
generation [F2 (subscript 2) is the second generation].

The way I see it: In the latter case it does not matter where one is in
relation to wild fish. If one were doing hybridisation experiments, for
example, then one would use the subscript notation. If one were keeping
track of generations from wild stock then one would use the non-subscript
notation.
___________________________________________
Brian R. Watters
University of Regina
Regina, Sask. S4S 0A2, Canada
Ph: (306) 584-9161 (home); (306) 585-4663 (work)
Fax: (306) 585-5433
E-mail: bwatters at sasktel_net



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