The mating apparatus of male butterflies prevents other males from mating with a female by producing a chemical plug.
"The mating apparatus of the male honeybee actually explodes and detaches, plugging the newly mated queen and preventing other males from mating with her. A number of insects, including butterflies, have chemical mating plugs which serve the same purpose and may even provide nutrients that the female absorbs and uses for egg production." (Forsyth 1992:32)
Learn more about this functional adaptation.
- Forsyth, A. 1992. Exploring the World of Insects: The Equinox Guide to Insect Behaviour. Camden House.
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