Brasileiro, Kelly R. Upon arriving at the seep for an evening tryst, some tried to eat the eggs already there, Dr. To curtail this filial cannibalism, the male sometimes attempted to create a diversion, clasping the female with his burly arms from behind — a typical mating position.
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This whole situation might sound less than ideal, especially for non-dominant females, Dr. Zamudio said. Indeed, scholars have noted that the Lonely black single women Eugene aggressiveness of the female spider towards the male is largely a myth" and that cannibalism only occurs in exceptional cases.
There has always been speculation on why this sacrifice of male mates might occur despite the obvious disadvantage to the sacrificial males. One theory is that once the male has mated, he is unlikely to mate again and so any further extension of his Any dark skin girls into Bahamas guys is of lesser evolutionary benefit than his indirectly contributing nutrition to the eggs.
Having more offspring would give the male the advantage of having his genes passed on over other males that might avoid being eaten. This scenario would be consistent with Roberts' hypothesis that old Powder coat lady unfit males get eaten, whilst younger and fitter ones may survive to mate.
Examples include Allocosa brasiliensisEvarcha culicivoraand Argyronetia aquatica.
Male water spiders, Argyronetia aquatica, show a predilection for mating with larger females, while cannibalizing females smaller than themselves.
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