Weird Insect Sex

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Calilasseia
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Re: Weird Insect Sex

Post by Calilasseia » Sun Mar 17, 2013 9:10 pm

Heh, if you find a bilateral gynandromorph of Ornithoptera alexandriae, it's worth £25,000 on the collector's market.

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Re: Weird Insect Sex

Post by PsychoSerenity » Sun Mar 17, 2013 10:58 pm

Calilasseia wrote:
JimC wrote:Can they, and do they mate?
Don't think so. I suspect the genital abnormalities I've illustrated prevent this.
Unless they find a mate which is bilaterally gynandromorphed the other way. :{D
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Re: Weird Insect Sex

Post by Tyrannical » Sun Mar 17, 2013 11:19 pm

Why are they symmetrical?
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Re: Weird Insect Sex

Post by JimC » Mon Mar 18, 2013 12:49 am

Tyrannical wrote:Why are they symmetrical?
Like most (but not all) metazoans, insects are bilaterally symmetrical. At various stages during embryonic development, a stem cell will divide in two, one destined for the left, the other the right side. If this coincides with a chromosomal abnormality leading to a different set of sex chromosomes between left and right, we will have a symmetrical division of male and female parts.
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Re: Weird Insect Sex

Post by Calilasseia » Mon Mar 18, 2013 10:32 am

There also exist mosaic gynandromorphs, where there's a mix of male and female characteristics not divided laterally, but they're not as spectacular as the bilateral ones. :)

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Re: Weird Insect Sex

Post by FBM » Mon Mar 18, 2013 10:41 am

Calilasseia wrote:Heh, if you find a bilateral gynandromorph of Ornithoptera alexandriae, it's worth £25,000 on the collector's market.
Papua New Guinea, eh? I think I'll just keep my day job and buy lottery tickets...not that I wouldn't love to visit PNG, but I'd probably wind up as dinner long before finding what I was looking for.
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