Parasitic fathers

See:

http://www.physorg.com/news/2011-07-insect-incest-males.html

Article reads: ‘It turns out that females in these hermaphrodite insects are not really fertilizing their eggs themselves, but instead are having this done by a parasitic tissue that infects them at birth,’ said Laura Ross of Oxford University’s Department of Zoology, an author of the report. ‘It seems that this infectious tissue derives from left-over sperm from their father, who has found a sneaky way of having more children by mating with his daughters.’

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