Re: [Killietalk] all fry of one sex [was: moina, Japanese daphnia]

[bjc3 at centurytel_net]

I've not been using my system long enough to make such observations. The main point of my reply is to tell you that, due to space limitations, Marshall had to defer my article to the JAKA issue after next, with Lee's article in the one after that.

Barry

----- Original Message -----
From: "Doug Dame" <dameda at shands_ufl.edu>
To: <killietalk at aka_org>
Sent: Mon, 03 May 2004 12:47:22 -0400
Subject: Re: [Killietalk]  all fry of one sex  [was: moina,  Japanese daphnia]

> 
> 
> >>> Paul_Jablinski at notes.udayton.edu Monday, May 03, 2004 10:56:13 AM
> >>>
> 
> >>  I used to raise lots of killie fry, but too often many grew
> >>  up to be either all males or all females, or too often I would
> >>  get a majority of one sex over another.  I forget the date
> >>  and year of the AKA magazine that told me if you put two
> >>  fry in a container for one month, they would come out a pair
> >>  - male and female.
> 
> 
> Anybody of you pioneers with automated water changing systems done any
> experimenting to see if high turnover rates eliminate or at least
> noticeably reduce this problem?
> 
> Because if this is the result of accumulated hormone etc levels in the
> water, as I've always assumed, then presumably there's some flush rate
> that will dilute the causal agent/s below critical levels. Just a
> thought.
> 
> Did I mention I'm very keen to see the upcoming JAKA article/s from Lee
> and Barry on water changing systems? VERY KEEN. Probably not the kind of
> article that would go over well with the advertisers of the mainstream
> fish mags either, now that I think about it. Not that you all need any
> extra encouragement from me to read JAKA !
> 
> Doug Dame
> Yankeetown FL USA
> 
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> 
> 
			
			
			
			
		

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