Problems with inbreeding/lack of genetic diversity?

[yen_saw]

Based on my experience, it is far better chance on getting stronger and healthier batch of mantis if your breeding stock is from nymphs of a large hatching rate. So in a way, i am doing a "selective inbreeding", and have yet to see any detrimental effect, maybe the effect will show up after few more generations of "selective inbreeding". But the million dollars question is when's the "threshold" point.

I'm betting pretty soon.

How soon?! It takes a while just to breed a generation.

 

[Asa]

Maybe 3, 4, generations.

 

[yen_saw]

I am into the third generation for my orchid with "selective inbreeding" and hasn't seen any detrimental effect with inbreeding.

 

[Asa]

I am into the third generation for my orchid with "selective inbreeding" and hasn't seen any detrimental effect with inbreeding.

Wow. With most species of insects, detrimental effects happen within a few generations. Maybe mantids are an exception to that rule.

 

[OGIGA]

Wow. With most species of insects, detrimental effects happen within a few generations. Maybe mantids are an exception to that rule.

Really? Which insects?

 

[Asa]

Beetles, arachnids, anthropods.

 

[colddigger]

I am into the third generation for my orchid with "selective inbreeding" and hasn't seen any detrimental effect with inbreeding.

Wow. With most species of insects, detrimental effects happen within a few generations. Maybe mantids are an exception to that rule.

well you know, the mantis is the hick of the insect world...

 

[athicks]

well you know, the mantis is the hick of the insect world...

lol!

I'm sure that there would have to be problems with lack of genetic diversity eventually. But in the short term there is not as many complicated things to mess up... like a complex nervous system. So the problems of inbreeding may not be pronounced or great after only a few generations.

Also, some of these rare mantids don't have huge populations in the wild right? I mean, it may be that they inbreed often there as well. It may be a genetically selected trait to NOT be affected by inbreeding!

 

[Asa]

well you know, the mantis is the hick of the insect world...

lol!

I'm sure that there would have to be problems with lack of genetic diversity eventually. But in the short term there is not as many complicated things to mess up... like a complex nervous system. So the problems of inbreeding may not be pronounced or great after only a few generations.

Also, some of these rare mantids don't have huge populations in the wild right? I mean, it may be that they inbreed often there as well. It may be a genetically selected trait to NOT be affected by inbreeding!

As mantids have different mating patterns, they do not interbreed often in the wild. The effects are not very pronounced in a few generations, but they are visible within most species.

 

[Hypoponera]

One possible reason you don't see the effects of inbreeding is numbers. How many eggs are in an ootheca? Perhaps the eggs that contain genetic problems simply die in the ootheca. Thus, you do not see any individuals with problems. This might explain why a large ootheca does not produce as many nymphs as expected.