[Cyprinodontiformes] FW: [goodeids] Ameca splendens and deformities

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De: goodeids  yahoogroups.com [mailto:goodeids  yahoogroups.com] Em nome de
Alessio Arbuatti
Enviada: sexta-feira, 19 de Fevereiro de 2010 09:49
Para: goodeids  yahoogroups.com
Assunto: RE: [goodeids] Ameca splendens and deformities

  
I have the same problem with zoogoneticus tequila, i obtained a group from
the guppy show amboise 2008 by diego montanari (i still have the card  i
received with the fishes). i'm using them for my thesis, i have some spinal
deformation, some of those are important, i try to take the fishes with
deformaytion to a separate aquarium.
i had the same roblem with poecilia wingei and I have a paper to publish
(including the rewiw of possible causes of spinal deformation in fishes) but
no international journal seems to want it (it's the fourth journal rejecting
it, and I made it with two veterinary pathologist from my facutly)..  it
could be genetic, or not. with zoogoneticus tequila, there's an interesting
paper on genetic difference in zoogneticus tequila an ameca slendens and it
report at the end thet zoogoneticus poplation in captivity are more genetic
convergences than the zoogoneticus one (i hope to remember well). thee title
is
 
beyoun the point of no return..a comparison beetwee..(i don't remember all
the title, try to find it on google)
 
tell me
 
best
Alessio
 
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To: goodeids  yahoogroups.com
From: Paul Veenvliet
Date: Thu, 18 Feb 2010 19:54:02 +0100
Subject: [goodeids] Ameca splendens and deformities

  
Dear all, 
 
Some time ago I obtained a group of Ameca splendens of unknown origin
(aquarium strain, all I know is that they are bred in Czech republic). They
were in poor condition, but even more standing out was that several fish
show a deformed spinal column. I believe that this can have a variety of
courses, including genetic factors (inbreeding as well as mutations),
malnutriton and certain internal parasites. By now these fish have a good
condition and I have the first four young, of a female which appears
 normal. My first impression of the young was that they are OK, but now that
they swim confidently through the aquarium, it is clear that they are far
from OK: 
 
one might be really OK (hope I still think this when the fish grows)
one is missing the left pectoral fin
one has a deformed spine
one has a small and pobably non-functional left eye (and took several days
to have it's swimbladder functional)
 
I will of course selectively breed with only those fish that look completely
OK. I plan to make notes about possible deformities in coming litters. To me
the variety of deformities is standing out and also somewhat frightening. Is
this a glimpse of the future of our aquarium strains? 
 
I wonder if any of you made similar observations of abnormalities and I
would appreciate it if someone can share data on abnormalities in the other
(more recently imported/known origin) strains of Ameca splendens. 
 
I am reluctant to give up on this strain and plan to continue breeding them
in order to see how other litters will look and if selection can improve the
health of such a strain. 
 
Kind regards, 
Paul Veenvliet
 


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