This F1,F2 etc... labeling only tells part of the story.
If you want to follow a genetic lineage you would have to give more
information.
Something like:
Fish A (F0) and Fish B (F0) would give you AB (F1)
AB (F1) and AB (F1) would give you AB (F2)
AB (F2) and B (F0) would give you AB x B (F1)
AB (F6) and C (F3) would give you AB x C (F1)
If that makes any since to anyone :) But that is the way I have always
understood it.
Chad
At 01:01 PM 4/4/05, you wrote:
>This contradicts my understanding.
>
>. If I remember
> > correctly, F1, F2, F3, etc is used when you are
> > working entirely within one lineage.
>
>F1, F2 and so on are used to determine the depth-in-which the animal has
>been captive produced. When breeding African cichlids many people prefer F0
>to get genetics un-diluted by inbreeding. What this means: If you have 2
>pairs of wild caught fish. They would each produce F1 offspring. If you took
>an F1 form brood A and an F1 from brood B and breed them together you would
>get F2 offspring.
>
>I am not sure how to answer the original question though. Wild caught is the
>only F0 that I am aware of, so you could never captive produce F0's.
>
>
>When you
> > introduce new genetic lines, you start again with F1.
> >
> > Also, if I remember, using the terms F1, F2, etc. is
> > really most useful when you are trying to determine
> > the genetic makeup of a particular line, to see if it
> > has recessive genes in it, etc. But, then again,
> > maybe it's just that that's all we used the terms for
> > in school.
> >
> > -Laura
> >
>
> > >
> > > Date: Sat, 02 Apr 2005 09:46:44 -0800
> > > From: Mysteryman <bestfish-in-alaweb.com>
> > > Subject: NANFA-L-- Stupid question
> > >
> > > I hate to have to ask this, but when F-1's are
> > > crossed with new F-O's,
> > > are the resulting progeny F-1's or F-1.5's or F-2's
> > > ?
> > > I'm supposed to know this one, but I can't seem to
> > > remember much of
> > > anything these days.
> > >
> > > My F-1 Flagfin Shiners, all females, are now all fat
> > > with roe. I caught
> > > some new F-0's for a guy who wants some, ( I can
> > > send them, now ) and
> > > now I have some males. I was just wondering what I
> > > would call any
> > > resulting fry if I were to cross a new male to my
> > > own females.
> > > /
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Personals - Better first dates. More second dates.
> > http://personals.yahoo.com
> >
> > /-----------------------------------------------------------------------
> > / This is the discussion list of the North American Native Fishes
> > / Association (NANFA). Comments made on this list do not necessarily
> > / reflect the beliefs or goals of NANFA. For more information about NANFA,
> > / visit http://www.nanfa.org Please make sure all posts to nanfa-l are
> > / consistent with the guidelines as per
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> > / help, visit the NANFA email list home page and archive at
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> >
> >
>
>
>/-----------------------------------------------------------------------
>/ This is the discussion list of the North American Native Fishes
>/ Association (NANFA). Comments made on this list do not necessarily
>/ reflect the beliefs or goals of NANFA. For more information about NANFA,
>/ visit http://www.nanfa.org Please make sure all posts to nanfa-l are
>/ consistent with the guidelines as per
>/ http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
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This F1,F2 etc... labeling only tells part of the story.
This contradicts my understanding.
. If I remember
> correctly, F1, F2, F3, etc is used when you are
> working entirely within one lineage.
F1, F2 and so on are used to determine the depth-in-which the animal has
been captive produced. When breeding African cichlids many people prefer F0
to get genetics un-diluted by inbreeding. What this means: If you have 2
pairs of wild caught fish. They would each produce F1 offspring. If you took
an F1 form brood A and an F1 from brood B and breed them together you would
get F2 offspring.
I am not sure how to answer the original question though. Wild caught is the
only F0 that I am aware of, so you could never captive produce F0's.
When you
> introduce new genetic lines, you start again with F1.
>
> Also, if I remember, using the terms F1, F2, etc. is
> really most useful when you are trying to determine
> the genetic makeup of a particular line, to see if it
> has recessive genes in it, etc. But, then again,
> maybe it's just that that's all we used the terms for
> in school.
>
> -Laura
>
> >
> > Date: Sat, 02 Apr 2005 09:46:44 -0800
> > From: Mysteryman <bestfish-in-alaweb.com>
> > Subject: NANFA-L-- Stupid question
> >
> > I hate to have to ask this, but when F-1's are
> > crossed with new F-O's,
> > are the resulting progeny F-1's or F-1.5's or F-2's
> > ?
> > I'm supposed to know this one, but I can't seem to
> > remember much of
> > anything these days.
> >
> > My F-1 Flagfin Shiners, all females, are now all fat
> > with roe. I caught
> > some new F-0's for a guy who wants some, ( I can
> > send them, now ) and
> > now I have some males. I was just wondering what I
> > would call any
> > resulting fry if I were to cross a new male to my
> > own females.
> > /
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Personals - Better first dates. More second dates.
> http://personals.yahoo.com
>
> /-----------------------------------------------------------------------
> / This is the discussion list of the North American Native Fishes
> / Association (NANFA). Comments made on this list do not necessarily
> / reflect the beliefs or goals of NANFA. For more information about NANFA,
> / visit http://www.nanfa.org Please make sure all posts to nanfa-l are
> / consistent with the guidelines as per
> / http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
> / help, visit the NANFA email list home page and archive at
> / http://www.nanfa.org/email.shtml
>
>
/-----------------------------------------------------------------------
/ This is the discussion list of the North American Native Fishes
/ Association (NANFA). Comments made on this list do not necessarily
/ reflect the beliefs or goals of NANFA. For more information about NANFA,
/ visit http://www.nanfa.org Please make sure all posts to nanfa-l are
/ consistent with the guidelines as per
/ http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
/ help, visit the NANFA email list home page and archive at
/ http://www.nanfa.org/email.shtml
--=====================_111536894==.ALT--
/-----------------------------------------------------------------------
/ This is the discussion list of the North American Native Fishes
/ Association (NANFA). Comments made on this list do not necessarily
/ reflect the beliefs or goals of NANFA. For more information about NANFA,
/ visit http://www.nanfa.org Please make sure all posts to nanfa-l are
/ consistent with the guidelines as per
/ http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
/ help, visit the NANFA email list home page and archive at
/ http://www.nanfa.org/email.shtml