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'Scent of a woman' tells male redback spiders to find a mate

are supposed to pluck and vibrate a female's web strings for up to eight hours -- and displeased females will flick males away or even off the web.

The female, who produces a batch of 100 to 300 eggs every month, will mate with only one or two males, and the first male will get up to 90 to 100 per cent of the fertilization for that female. "This provides a really good explanation for why there is so much size variation [among males] in the wild," says Kasumovic. "Everybody always states that the small males are a by-product of them not being able to get enough resources, but we're showing that they're intentionally developing that way."


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Source:University of Toronto


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