Do cockroaches sibling-mate?

Uther

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Feb 22, 2024
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I'm down in Texas for about 2-3 weeks and just about to go back north and I've spent time searching everywhere for different kinds of cockroaches that were found here (that aren't found in the north) and I found a single Asian cockroach with an ootheca and I'm curious if she's the only one I find, is it possible that the cockroaches from her ootheca will mate with each other and reproduce, or will they all die off without reproducing if I can't find more? Thanks
 

DomGom TheFather

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Roaches don't get hung up on incest too bad.
If there is a pair, and they're both sexually mature, they'll do it.
 

Ultum4Spiderz

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I'm down in Texas for about 2-3 weeks and just about to go back north and I've spent time searching everywhere for different kinds of cockroaches that were found here (that aren't found in the north) and I found a single Asian cockroach with an ootheca and I'm curious if she's the only one I find, is it possible that the cockroaches from her ootheca will mate with each other and reproduce, or will they all die off without reproducing if I can't find more? Thanks
They can usually breed a few years without adding new bloodlines but I’ve had some species were some die and didn’t get full sized .
 

Uther

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Feb 22, 2024
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They can usually breed a few years without adding new bloodlines but I’ve had some species were some die and didn’t get full sized .
Thanks for the reply! At least there's a chance I cna get them to reproduce if I can't find another before I leave. I plan to search again once more if I can before I go, just currently sick and it's like 106° here haha
 

NocturnalSkies

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Dec 2, 2021
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I assume yes. I’ve had a P. Americana venom colony going for like 4 years now, no problems. As far as I know besides a few more delicate species most species of roaches don’t seem to be too affected by this
 

Wolfram1

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most of the pest -roaches have no issues with incest in perpetuity, but some of the "pet" roaches don't do too well if there is no new blood added every few generations, Blaberus sp. are such a case and even B. dubia benefit from occasional refreshing
 

Uther

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Feb 22, 2024
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I assume yes. I’ve had a P. Americana venom colony going for like 4 years now, no problems. As far as I know besides a few more delicate species most species of roaches don’t seem to be too affected by this
Thanks! Hopefully I can keep this species going!
 

Uther

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Feb 22, 2024
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most of the pest -roaches have no issues with incest in perpetuity, but some of the "pet" roaches don't do too well if there is no new blood added every few generations, Blaberus sp. are such a case and even B. dubia benefit from occasional refreshing
Well these are really similar to German cockroaches so hopefully they'll breed. I don't have any Blaberus sp. and for the Dubia, I have multiple bloodlines already! Thanks
 

Hisserdude

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Apr 18, 2015
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There are really no confirmed cases of inbreeding being bad long term for captive roach lines, at least as long as it's not exclusively sibling to sibling incest for multiple generations (something that will almost never happen consistently in a colony setting). Insects can handle a large amount of genetic bottlenecking, and more to the point most hobby roach stocks (some of which have been in culture for decades) are SINGLE SOURCE lines. Meaning they were only ever imported/collected once from their country of origin, and often are descended from only a few WC individuals (or even a single WC mated female). Meaning adding "new bloodlines" is essentially impossible, despite what others may claim.

For anyone interested on reading more on the topic, I go more into depth to it on a blog post here (perhaps a shameless plug, but I get tired of writing the same stuff over and over again).
 
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