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Old 06-22-2012, 04:46 PM   #1
The Bug Whisperer
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Join Date: Dec 2008
Location: Monroe County, WV, USA
Default An Anomaly in Mating: Self-Castration Raises Reproductive Success

"Males of a tropical species of orb-web spider castrate themselves, either partly or fully, after mating. It might seem a self-destructive habit, but in removing their genitals, a new study reports, the spiders are actually improving their reproductive success.
By becoming a half eunuch or full eunuch, the spider reduces its weight by 4 to 9 percent. It then stands guard by the female it has mated with. Its lighter weight allows it to better fend off other males."
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