Crickets rapidly evolve new mating call to evade their parasites
In what could be a case of remarkably fast animal evolution, the crickets of Hawaii have begun to purr. The discovery is the latest twist in a decades-long battle between crickets and a parasitic fly that is attracted by their songs.
Male crickets usually sing to attract a mate, but this makes the Pacific field crickets ( Teleogryllus oceanicus ) on Hawaii easy targets for a parasite . This fly ( Ormia ochracea ) tracks down crickets by their songs, and deposits its maggots on them. These then burrow …
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