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Re: [Killietalk] Killietalk Digest, Vol 47, Issue 53
To contribute to the subject of using clay for the incubation of nothobranchius eggs. On a number of occasions I have written and mentioned in many of my presentations that one of the largest hatches that I ever had was sometime in the late 50's. At that time we had few nothos,in the hobby,the most prominent being,N.guentheri ,N. melanospilus and N. foerschi,the latter,at that time referred to,as N. palmquisti. I decided to use soil from my back yard,as a incubation medium. I used a pyrex dish,the type used for baking cakes.I placed a layer of soil which had the consistancy of just plain mud.On that surface several hundred eggs were spread throughout the surface.Another layer,about 1/2" thick,was used to lock the eggs between layers. The dish was placed on my fish house floor and forgotten about. I don't remember the duration of of the incubation time until sometime later the surface was bone dry and gave the appearence of a dried cracked riverbed. Some of you may recall t
he pho
tographs of the ponds in the Aruana,Central Brazil,that show this very clearly. Upon viewing, one may wonder how eggs can survive the harsh conditions,but I believe the cooling and expansion of the soil, during daytime elavated temperatures, can add oxygen and evening declining temperatures,can add moisture in the form of dew.
That experiment netted so many nothos that it was almost impossible to raise them as the fish house had a large number of other species that were more important. By the way there was not a single "belly slider".
General White,while a major,in the Army Air Corp,stationed in Rio,and the discoverer of several annual fishes,was the first to breed, N.whitei,his namesake,in 1941,using mud as a incubating medium. He netted 5 fry as I recall,according to his correspondence,with Dr. G.S. Myers. I have copies of all his correspondences,and in them he reveals his experiences with whitei.
Rosario LaCorte
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> 1. Nothobranchius and clay. (Joseph S.)
> 2. Re: Nothobranchius and clay. (Barry Cooper)
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> Message: 1
> Date: Sun, 24 Jun 2007 16:51:02 -0700
> From: "Joseph S."
> Subject: [Killietalk] Nothobranchius and clay.
> To: "killifish discussion list"
>
> I was reading the Jan/Feb 2006 JAKA where Brian Watters talks of the
> habitats of Nothobranchius. He mentions the importance of swelling
> clay in the soils of Nothobranchius habitats.
>
> Has anyone tried to duplicate the actual soil in captivity? I wonder
> if sodium bentonite clay would work or not? It stays moist, actually
> kind of sticky out of water and expands to 10x its size in water. It
> is used for drilling and also for large ponds.
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 24 Jun 2007 17:00:10 -0700
> From: Barry Cooper
> Subject: Re: [Killietalk] Nothobranchius and clay.
> To: killifish discussion list
>
> I doubt you could easily duplicate the kind of clay that is present in
> Notho habitats. I also wouldn't want to work with something as messy as
> clay when peat works perfectly well.
>
> Barry
>
> Barry J. Cooper
> Sweet Home, OR 97386
>
>
>
> Joseph S. wrote:
> > I was reading the Jan/Feb 2006 JAKA where Brian Watters talks of the
> > habitats of Nothobranchius. He mentions the importance of swelling
> > clay in the soils of Nothobranchius habitats.
> >
> > Has anyone tried to duplicate the actual soil in captivity? I wonder
> > if sodium bentonite clay would work or not? It stays moist, actually
> > kind of sticky out of water and expands to 10x its size in water. It
> > is used for drilling and also for large ponds.
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> End of Killietalk Digest, Vol 47, Issue 53
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