Re: [Killietalk] Notho incubation times

[ROBERT ELLERMANN <ruevenm at sbcglobal_net>]

Hi,
 
    Could it be the same thing that can happen with orchids when a plant "senses" death is near -- it blooms. Do the transplanted fish undergo some biochemical reaction from the stress of capture and captivity that triggers survival responses possibly mirroring the triggers -- if there are such things -- that determines the incubation period in the wild? Is incubation time all environmental based or is incubation also genetically/biochemically pre-determined in response to circumstances? Do fish lay eggs having a rigidly set/pre-determined incubation time?
 
Bobby

Brian Watters <bwatters at shaw_ca> wrote:
Ralph Tran wrote:

>
> 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.
>
> Has anyone else noticed this trend and if so, any
> ideas on why this is?
>

Yes, quite consistently, the eggs from wild caught Nothos, especially eggs
collected soon after they have been brought back from the wild, will often
(but not always) show relatively short incubation times.

I noticed this as far back as 1988 when I first started bringing wild Nothos
back from Africa and I cannot explain it. It is something that I have
mentioned quite a few times on this list but, to date, I have not heard a
convincing explanation for it.
________________________________________
Brian Watters
6141 Parkwood Drive
Nanaimo, British Columbia V9T 6A2, Canada
Tel: (250) 760-0564
E-mail: bwatters at shaw_ca

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