Tuesday, 15 May 2007

Cooperative Mating Behaviour in Sharks

Looking through some of Brian Larnder’s past post of Sexiest Animal on the Planet, I discovered this interesting article on sharks. I was surprised to learn about the advantages of male sharks engaging in teamwork to inseminate a female!

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a rather rough affair - the word rape surface to mind... I know it's wrong to superimpose morality on animal's behavior, but...

Is there any studty confirming whether the sharks who come after try to remove the sperm left by the previous ones? I know this kind of scooping is quite common. There would be a clear reproductive edge in being able to trick your own mates into helping you to subdue the woman, then getting almost all the rewards yourself.

I would also expect, in the case, a trade-off between the advantage of going first (once at least some eggs are fecundated, you're safe) and going last ('cause you potentially may be rewarded more, but you also risk finding all places on board already taken.

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