Rapps Genetically tested f1 Red Devils

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mrmann said:
I don't think jeff is one that needs to be scrutinized on his fish purity. One of the most trusted and respected vendors around.
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I know he is the best just comparing my male f1 to my f0 and the male has a way shorter snout than the f0 for some reason I see midas and u can't be sure cause midevil does occur in the wild


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and u can't be sure cause midevil does occur in the wild
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I do not know of any genetic work that proves citrinellus & labiatus have ever crossed in the wild. All of the genetic work that I have seen performed over the years shows just the opposite.

That, and there are genetic differences between both species, within the two great lakes.


http://rstb.royalsocietypublishing.org/content/365/1547/1763.full


Intriguingly, both A. citrinellus and A. labiatus have body shapes that are significantly different from their conspecifics in the neighbouring great lake (figure 5a, table 5). Differences among populations of A. citrinellus and A. labiatus between the two great lakes may indicate phenotypic divergence by drift promoted by long periods of geographical isolation. Amphilophus citrinellus in lakes Managua and Nicaragua are significantly genetically differentiated at nuclear microsatellites and mtDNA (Barluenga & Meyer 2004), suggesting a strong role for geographical isolation. Alternatively, the significant intraspecific, interpopulation body shape differences may represent local adaptation to different lake conditions. Abiotic environmental factors such as turbidity, depth, slope and temperature are very similar for both great lakes (Cole 1976), but the lakes differ dramatically in water chemistry (Cole 1976). Lake Managua is much more concentrated in dissolved solids, probably because it has no major out-flow (Cole 1976). Our results for A. labiatus in Managua and A. citrinellus in Nicaragua should be treated with some caution, as the former has a relatively small sample size (table 2) and the latter relies on samples drawn only from the west–northwestern area of the lake. Additional studies to discern the ecological causes of the intraspecific variation between the populations in lakes Managua and Nicaragua are underway, as these populations represent the source of biological variation that colonized the isolated crater lakes.
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Which is why I originally posted the following discussion (now a sticky) back in 2011.

http://www.monsterfishkeepers.com/f...f-citrinellus-A-potential-case-of-F1-Midevils


.......... where I stated:

Given the above information I would think that the best approach when breeding any of the above wild caught species is to ensure that both parent fish come from the same body of water, and in some cases the exact same collection location within that body of water. Short of that you might as well consider the offspring of random pairings as Midevils, just like the ones that are found at your LFS.
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fishman09 said:
I believe this is just a case of wild vs f1. Wild labiatus are very specialized feeders and f1 offspring in aquaria don't grow up eating in that specialized way which Is probably why the snout deosnt develop.


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^this
 
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