Evolution of Parasitoids

Discussion of everything related to the Theory of Evolution.

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Jimmyonfire
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Evolution of Parasitoids

Post by Jimmyonfire » Sat Nov 29, 2008 4:57 am

Hello Biology dudes, I'm an insomniac and my mind has been wondering a bit. Can anyone explain to me (preferably in laymans terms) how they could have evolved/they and their hosts co-evolved? Parasitoids, that is. It seems so specialised I can't imagine how they got like that.

Darby
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Post by Darby » Sat Nov 29, 2008 8:46 pm

From a scavenger larva to one that could live inside a living host is not much of a leap; from deposit of eggs on dead or debilitated hosts to lively ones isn't a huge leap. Once you've got a parasite and host, coevolution is pretty much a given.

Jimmyonfire
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Re: Evolution of Parasitoids

Post by Jimmyonfire » Sun Nov 30, 2008 5:41 am

It just sees odd to me that at some point one of the ancestors of a wasp thought 'hmm, yeah, i think i'll lay some eggs inside the head of that moth over there!'. It's just bizzare!

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Post by Darby » Wed Dec 03, 2008 9:51 pm

It doesn't become a specific behavior all at once, but there are many instances of adults being influenced to deposit eggs in a spot that matches their own hatching place, which would help a shift in egg placing become set in place over a few generations.

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