Rough Beetle Sex.
Yes, that’s a beetle penis, and it’s part of the cringe-inducing phenomenon known as "sexually antagonistic co-evolution." Cosmos reports:
Male seed beetles have spectacularly harmful penises covered in For seed beetles – a group of insects consisting of many species They found that in species where males have the spikiest penises, the
sharp spikes. These help the male’s chances of fertilizing the eggs by
providing an anchor, but can also pierce the female during sex, causing
injury.
that infest beans or seeds – the battle of the sexes is not a
psychological game played out in the home, it’s a deadly serious
evolutionary arms race, according to a new study. . . .
females had more padding in their reproductive tracts. According to the
researchers, the spiky male genitalia are less damaging to females with
more padding, which results in those females surviving and producing
more offspring.
this post? Please 
June 12, 2007 at 7:59 am by 
Jimbo
Ali S.
Denita TwoDragons
Darwin
Want your own avatar? Get one for free at 
