Re: livebearer sex ratios (was) Re: [GSAS-Member] Using a Python

[Kate Breimayer <kate@munat.com>]

Maybe if it's not soon we can just mail eachother the spare 
females/males and not worry about it... my ph was at 7.4 until recently 
when it dropped to 6.8. Very odd. They were kept pretty cool though, 74 
degrees, and overcrowded. A dozen fry to juvies were raised in a one 
gallon container for a couple months til they were all juvie or young 
adult size. Really odd thing is they all looked pregnant though no male 
was seen. Maybe he got tired and jumped.
Oh yeah, sorry, joking aside. But really, same deal with the guppies, 
all female and all pregnant? What are they, black widows?
Kate

haika@drizzle.com wrote:

> My Endler's tank pH is around 7.0-7.2. I get lots of males, but females as
> well. There are too many in there to really get an accurate ratio (plus
> they move around so much courting and dodging), but I'm gonna estimate a
> 2M to 1F ratio. I've learned that letting the pH drift below 6.8 means
> dead Endler's.
>
> Betty Goetz
>
>  
>
> > Hi Fran,
> >
> > Measure your pH and extropolate ;->
> >
> > Joking aside, try shifting your pH and see what you get. Even Endler's are
> > not so sensitive they won't tolerate gradual change.
> >
> > June
> >
> >
> > on 12/7/04 3:05 PM, auntie.fran@netzero.net at auntie.fran@netzero.net
> > wrote:
> >
> >    
> >
> > > Good hearing from you, June!  You said: "My experience was that pH
> > > infulences
> > > gender ratio in live bearers. At first I thought it was water temp but
> > > changing that made little if any difference but pH did."
> > >
> > > Now, please tell us, was it high pH or low pH that produced more
> > > females?  I'm
> > > really concerned about my lack of female Endler's.  I don't want to lose
> > > my
> > > entire colony because they're producing only male offspring.
> > >
> > >
> > >
> > > Growing old is inevitable; growing up is optional.
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>
>
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