Re: [Killietalk] Cool water killies and related considerations

["David Wood" <cynodave49 at ntlworld_com>]

I raised the topic of rainfall versus drying ponds a while back, and it was 
pointed out that the local vegetation when growing acts like a giant 
pump,literally sucking water from the ground (and thus the nearby ponds) 
faster than the rain can refill the water-table. Obviously, in colder 
seasons growth slows down and water is collected in ponds once again.
The numbers of gallons per tree were enormous, I recall.
Dave Wood.

----- Original Message ----- 
From: "Brian R. Watters" <bwatters at sasktel_net>
To: "killifish discussion list" <killietalk at aka_org>
Sent: Friday, January 07, 2005 6:21 PM
Subject: RE: [Killietalk] Cool water killies and related considerations


> Lee Harper wrote:
>
> > ...... I would be interested in a comparable comparison with
> > warmer water species (Simpsonichthys) in Brazil.
>
> I have not looked at the rainfall data for Brazil in great detail but the
> situation there is much closer to that in East Africa with a more 
> pronounced
> difference in rainfall between wet and dry seasons. For example, if we 
> look
> at the climate for Formosa (near Brazilia and near the Maratecoara
> localities):
>
> Jan 262.2 mm
> Feb 212.9
> Mar 201.9
> Apr 102.9
> May 19.7
> Jun 4.0
> Jul 4.2
> Aug 5.8
> Sep 34.5
> Oct 139.7
> Nov 238.2
> Dec 328.6
>
> This rainfall pattern is very close to that for most areas in which we 
> find
> Nothos, with a marked distinction between wet and dry seasons. I don't 
> have
> air temperature data for Formosa but that for Brasilia shows a range from 
> a
> low of about 18.5 to a high of about 21.5 (monthly averages). The very 
> small
> variation is due to the proximity to the equator. Those temperatures are, 
> in
> general, somewhat lower than those in East Africa. However, I suspect that
> in areas closer to the coast and at a lower elevation in Brazil the
> temperatures would also be higher.
>
> Anyway, the conditions are quite different to those in Argentina-Uruguay.
>
> It is aspects such as this that make the hobby so interesting for me.
>
> > I have not recognized differences in the need for
> > dryness in the fishroom. It may be an environmental happenstance, but not
> > critical for incubation.
>
> That is much as I thought. It always amazes me how adaptable killifish can
> be. We go to a lot of trouble to measure conditions in there natural
> habitats and yet they will invariably do very well in our fish-rooms under
> conditions that are vastly different.
> ___________________________________________
> Brian R. Watters
> University of Regina
> Regina, Sask. S4S 0A2, Canada
> Ph: (306) 584-9161 (home); (306) 585-4663 (work)
> Fax: (306) 585-5433
> E-mail: bwatters at sasktel_net
>
>
>
> To join the AKA see http://www.aka.org/pages/join.html
> Archives are at http://fins.actwin.com/killietalk/
>
>
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