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May 11, 2005

Big Tackle May Get You Caught

Guest: cntodd

Apparently there is an evolutionary trade off to being well-endowed:

When it comes to females and a male's ... uh ... equipment, it seems size really does matter — at least among certain fish.

A study of mosquitofish — guppy-like creatures that feed on mosquito larvae — shows that females definitely prefer well-endowed males to their shrimpier brothers.

But sex aside, being bigger isn't necessarily better. Male mosquitofish with large genitalia have a greater risk of dying — even if it is with a smile.

“Its a classic evolutionary trade-off between attracting mates and avoiding predation,” said Brian Langerhans, a graduate student in evolutionary biology at Washington University, whose study was published this week by the Proceedings of the National Academy of Sciences.

“Having a large genital organ may increase your probability of mating, but it also may increase your probability of being eaten.”

That's because mosquitofish with large genitalia — known as a gonopodium — can't swim as quickly, Mr. Langerhans said Tuesday from St. Louis, Mo.

“Females may prefer to mate with males exhibiting a large gonopodium ... but having such a large non-retractable organ hanging off the body might contribute substantially to drag and would contribute nothing to thrust.

[From Globe and Mail]

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Comments

“Having a large genital organ may increase your probability of mating, but it also may increase your probability of being eaten.”

Aren't those both advantages?

having such a large non-retractable organ hanging off the body... would contribute nothing to thrust.

Really?

its like a kid in a very profane candy store, that entire thing...

Is there a guppy dick enhancer on the market yet?

jimBOB: I should think it'd be harder to hide in drag, too.

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