Researchers have found that, for male seed beetles with "torture phalluses", the longer and spinier the better. The "pretty mean" genital is covered in spines along its entire length and causes internal injury to the female beetles, who -- not too surprisingly -- are built with thick padding to withstand mating. (To get these pics of the toothy, horny beetle genitalia, the scientists pumped them up with a vacuum pump -- just like Austin Powers!)
Also in today's links: many more oddities of the animal kingdom.
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As cool as this sounds, i honestly just don't understand the anatomical significance of this feature. Is it supposed to prevent insect rape or something?
Insects who's females will only lay eggs a single time in their lifespans tend to develop this sort of adaptation; the female will be permanently scared, preventing a subsequent male from "competing" with the first for fertilization of her eggs. Only the first male will be capable of intercourse with the female, so in a sense you are correct. Fortunately, if memory serves correctly insects to not possess the nerve endings necessary to feel pain as we know it.
There are simmilar adaptations here and there. For instance, upon assuming the role of alpha, a male zebra will violently mount most of the females of the herd, effectively aborting the foals of the previous male.
Thanks for the explanation. That's really cool and interesting.
Very interesting article. Kinda gross pic, but interesting article http://budgetvanlines.businesscard2.com/