Re: [Killietalk] short Notho incubation times

[kho <txp2888 at yahoo_com.sg>]

Hi Dr Earl,

In asia the incubation time are shorter due to the
temperature(28~34dC) and the fish have shorter life
span.

If your incubation temperature is 24dC and below it
should fall back to the usual incubation time.

I get my pure Beira 98 strain from Spain and the
incubation time is 4-6 weeks and not the standard
period. The change in temperature can kill the egg,
egg disappear and bad hatch rate.

Best Regards
kho

--- Earl Blewett <Micro at earlblewett_net> wrote:

> Dear FishFolk,
> 
> I have noticed this with N. rachovii beria 98 from
> asia. I wet the eggs when
> they said and got some fry. Many months later I wet
> the eggs and got more.
> The subsequent generations had to be 6 - 9 months. I
> couldn't find anything
> but clear eggs up to 4 - 5 months then 6+ for good
> eyed eggs.
> 
> I know Kyle has noticed the same thing. I think he
> got his from a different
> fellow in Thailand but they were also RAC beria 98.
> 
> Earl 
> 
> 
> --------------------------------------------
> Earl Blewett Ph.D.
> Associate Professor of Microbiology
> Dept. of Biochemistry and Microbiology
> Oklahoma State University
> Center for Health Sciences
> College of Osteopathic Medicine
> 1111 W 17 St. Tulsa, OK 74107
> 
> Email:   micro at earlblewett_net
> Office: (918) 561-8405
> FAX:    (918) 561-8414
> -----Original Message-----
> From:
> killietalk-bounces+micro=earlblewett_net at aka.org
>
[mailto:killietalk-bounces+micro=earlblewett_net at aka.org]
> On Behalf Of Ralph
> Tran
> Sent: Thursday, October 06, 2005 8:29 AM
> To: killietalk at aka_org
> Subject: [Killietalk] Notho incubation times
> 
> The recent discussion on N. furzeri incubation times
> sparked my interest.  
> 
> I recently got some Notho eggs (various species)
> that came from wild
> collected parents.  The breeder told me that the
> incubation times on eggs
> from wild parents was incredibly short.  I didn't
> totally believe him,
> particularly with N. furzeri, but went ahead and wet
> the eggs after 5 weeks
> of incubation.
> 
> Sure enough, after only five weeks of incubation, I
> got a tremendous hatch
> from the N. furzeri eggs.
> 
> I also got some N. rachovii eggs, again from wild
> parents, and the
> incubation was only 4 weeks.
> 
> The breeder did tell me, however, that eggs produced
> from F1 and subsequent
> generations revert back to the "normal" incubation
> times, i.e. 7 mos or so
> with N.
> furzeri.
> 
> Has anyone else noticed this trend and if so, any
> ideas on why this is?
> 
> Thanks
> Ralph
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