Due to fierce competition for mates, male spider mites guard juvenile females and forcibly remove their skin as they near adulthood so they can secure the first mating
Male spider mites closely guard juvenile females and tear off their outer skin as soon as they approach maturity so they can be the first to mate with them.
Adult females can have multiple sexual partners, but only the sperm of their first partner fertilises their eggs. As a result, there is strong competition between males for females that have just reached maturity.To try to secure this access, male mites often guard juvenile females until they become fertile adults. This is a risky strategy because it costs energy and prevents the males from foraging for food – and rival males may still steal the females at the last minute.
In contrast, females housed with a male had their outer skin forcibly removed. As a female neared maturity, the male began drumming on her skin to encourage it to break open. Then the male used his mouthparts to pull off the female’s skin from behind so he could expose her genitals and immediately inseminate her.This meant that females with a male emerged from their outer skin 5 minutes earlier on average than those on their own, says Schausberger.
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