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Old 06-22-2012, 04:46 PM   #1
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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."


http://www.nytimes.com/2012/06/19/sc...ml?ref=science
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Old 06-22-2012, 07:32 PM   #2
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Ouch! Where do you find these articles, suunto?
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Old 06-23-2012, 07:36 AM   #3
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Ouch! Where do you find these articles, suunto?
Only the Shadow knows - heh heh heh heh....
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Old 06-24-2012, 09:55 AM   #4
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Ouch! Where do you find these articles, suunto?
Funny, that is almost the exact same response I came up with...
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Only the Shadow knows - heh heh heh heh....
...great answer! I didn't post that question the other day, because I thought someone would say, "The New York Times, duh!".

...more than where the article came from, how exactly does one discover such a thing?!
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Old 06-24-2012, 09:58 AM   #5
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...how exactly does one discover such a thing?!
I mean, just how well-hung are thes little guys?

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Old 06-24-2012, 11:44 AM   #6
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I mean, just how well-hung are thes little guys?

You can get some idea from the image in the cited article - the male's sex organs are its palps (leg-like organs at the front of its cephalothorax). As the article stated, they constitute four to nine percent of the spider's body weight.
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Old 06-24-2012, 12:59 PM   #7
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When I first saw this, I thought the goal was to avoid being cannibalized after mating, but I guess it is no guarantee...is the female less likely to cannibalize a castrated male?

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...they constitute four to nine percent of the spider's body weight.
So, if the human male were to have similar proportions...so, if a human male weighs 180... ...wow!
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Old 06-25-2012, 05:42 AM   #8
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When I first saw this, I thought the goal was to avoid being cannibalized after mating, but I guess it is no guarantee...is the female less likely to cannibalize a castrated male?
The self-amputated palp(s) remains in the female's genital opening (she has two); thus preventing that from being used by another male, and the now lighter male supposedly has an agility advantage over a rival for the other opening...
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Old 06-25-2012, 08:47 AM   #9
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The self-amputated palp(s) remains in the female's genital opening...
Yes, I saw that in the picture...
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(she has two)
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...thus preventing that from being used by another male...
Now, I find these two facts even more interesting.
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Old 06-25-2012, 04:05 PM   #10
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A bug plug.... sorta funtions like a partial chastity belt!!! That's pretty wild.
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anomaly, behavior, cephalothorax, female, male, mating, palps, raises, reproduce, reproducing, reproduction, reproductive, selfcastration, spider, spiders, success

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