Inbreeding rays specifically ?.!?.

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keepinfish

keepinfish

Potamotrygon
MFK Member
Jun 29, 2007
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I know inbreeding is looked down upon. But I think it is something that is done to line breed for certain traits. I'm pretty sure it is done more so than we like to think.

Has anyone seen any deformities by doing this with rays?
Could doing this cause problems for the pregnant mother... Or would it mainly only cause problems with the pups?
Just curious for sake of conversation and maybe learn something along the way :)
 
I don't think it would hurt mother if she got knocked up by offspring. Once she's prego she's prego. I'm sure there could be problems from it but also some amazing pups could come out from it also!

How do we know Rays do not inbreed in Wild?
 
Inbreeding is definitely used in line breeding. Especially in developing all these albinos we are seeing these days. I have no doubt that more deformities arise from breeding back to parents or siblings.
I remember when private breeders wouldnt sell siblings to an individual. Now they could care less. Just move the product.....
 
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keepinfish said:
I know inbreeding is looked down upon. But I think it is something that is done to line breed for certain traits. I'm pretty sure it is done more so than we like to think.

Has anyone seen any deformities by doing this with rays?
Could doing this cause problems for the pregnant mother... Or would it mainly only cause problems with the pups?
Just curious for sake of conversation and maybe learn something along the way :)
Click to expand...


I'll add my cent and a half on this. Up until about a year ago I worked with one of the most selectively bred agriculture species around, the domestic chicken (Gallus gallus domesticus) analyzing the genetic consequences of trait selection. The chickens you're purchasing from the grocer have ALL been selectively bred for some trait, at some point, beit for faster growth rate, higher feed conversion, faster/bigger egg production. The breeding stock for these traits are in some instances selected over 100's of generations. For example, generation 1 is a genetically diverse group of animals and from this group a few which excel for a certain trait, say fast growth, will be bred together. Then from their offspring the fastest growing animals will be selected and bred together. Iterate this 100 times and you've got some real hillbilly stuff doing on.

To the point, yes, this does lead to some pretty severe mutations/defects; most of the time natural selection will take care of these individuals.

Obviously a chicken is not a stingray, and stingrays will never be selected as stringently or on the same scale as poultry are. But I would tend to agree that the extreme trait breeders will end up with some truly beautiful disease prone/short lived stingrays some years down the road. Unless someone starts selecting health/longevity traits?
 
Oh boy... lol this is a touchy subject for some people. Line breeding with fish in general has been going on since the beginning. It's how we have so many variants of everything. Yes it very well can happen in the wild. Although not as likely. I am not for it or against it. After all we wouldn't have so many species of domestic animals like dogs if it were not for breeders selectively line breeding for specific traits.
 
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Personally I would try as much as I can to breed unrelated individuals. However, that's going to be expensive and most hobby breeders only have that 1 or 2 pairs only. It's actually pretty difficult to buy individual rays here. I only managed to get my pair of rays seperately via gumtree! So I do understand why inbreeding occurs at a large scale. I think its pretty much unavoidable really.
 
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