[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Round Robin egg swap
In a message dated 9/14/00 9:01:22 PM Eastern Daylight Time,
bmeyer at parkland_cc.il.us writes:
<< Subj: Re: Round Robin egg swap
Date: 9/14/00 9:01:22 PM Eastern Daylight Time
From: bmeyer at parkland_cc.il.us (Bob Meyer)
Sender: owner-killietalk at aka_org
Reply-to: killietalk at aka_org
To: killietalk at aka_org
Pterolebias zonatus . We worked with this fish for six generations, then
started to get low fertilility and spinal defects. Some secrets we found.
Zonatus eggs need to be incubated at 80 F for 5 months and 3 weeks. Very few
hatch out at less than 4 months or more than 7 months. This is very
different than most peat spawners which just sit happily in a diapause until
ready to hatch.
There are several different strains of zonatus around. I think they may
even be a couple of different species. They did not interbreed well.
You get mainly males if you incubate the eggs below 80 F. Equal percentages
between 80 and 90. More females at above 90. This was never proven
conclusively, but I stand by it. I incubated my eggs at 90.
Male zonatus are the size of guppies when born. Females are ½ to 2/3 this
size. You can sex this fish out at birth!!. If you don't feed this fish
very well, the males will canibablize the females in the first few days.. I
think this is the primary reason for hatches that result in all males. We
did not work with any other Pterolebias.
Occidentalis. There are several strains of this fish. I believe that if
you cross these strains that you result in infertility problems in the later
generations. You can cross two fish and sell 100s of offspring and all are
sterile mules. The most success was found by people who continually bred
fish from one location only.
The best way I found to breed this fish I found in an old article (1970s.).
I want to say it was Ray Huckstadt or something to that effect. Iron River
Michigan seems to ring a bell. He took a gallon milk jug and put 1 inch of
white silica sand in the bottom. He then cut holes in the side of the jug.
The male would station himself above the sand. The female would enter when
she was ready. After a week he would take out the milk jug and pour the sand
into a container . Using a swirling technique he would stir the eggs and
collect them. They were then either peat incubated by laying on top of peat
or by water incubating (not as successful, but faster). Fish spawned over
peat seemed to have a lot of eggs disintegrate or disappear. Apparently they
are susceptible to waste products in the peat.
Charles Harrison of St Louis had this fish for many generations until they
succombed to a Camallanus parasite. My fish also got this parasite and I
lost mine. The fish is still in the hobby. Some are listed in the BNL F&E
We did not work with Toddi. I am thinking that Arch worked with this fish a
lot in the 70s and may have more insight.
Both the zonatus and the occidentalis are beautiful fish. I no longer have
either, but wish I did...bob
>>> RuevenM at aol_com 09/14/00 02:05PM >>>
I am a long time AKA member (1969-1978 and 1994-now) and I am very
interested in the Pterolebias (Gnatolebias -- UGH!!!) zonatus and Golden
Pheasant maintainence groups you did years ago. Could you please share your
experiences with me and/or the list. How did you solve the problem of
zonatus, especially over several generations? Was hoignei involved too? Was
C. toddi included in the pheasant program? Can't wait to hear all the
details. Sounds great.
Robert Ellermann >>
See http://www.aka.org/AKA/subkillietalk.html to unsubscribe