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Male dwarf spiders make sure offspring is their own
Date:6/10/2014

s to the female sperm storage organ.

However, even if subsequent males are able to mate, at least part of their sperm mass remains outside of the female genital tract, confirming the efficacy of the mating plug. Consequently, if a male succeeds in plugging both of the female's copulatory openings, his paternity success is expected to be very high.

"The mating plug in the dwarf spider clearly functions as a mechanical obstacle to rival males," says Kunz. "Mating plugs are a powerful mechanical safeguard whose efficacy varies with plug size and age."


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Contact: Joan Robinson
joan.robinson@springer.com
49-622-148-78130
Springer
Source:Eurekalert  

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