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Biology

Kin Recognition and Nepotism in Rodent Colonies

Quick fact

Belding's ground squirrels can distinguish full siblings from half-siblings and even from unrelated individuals solely by scent, and they preferentially give alarm calls when relatives are nearby, a behavior that increases their inclusive fitness.

Why this is interesting

When a ground squirrel spots a predator, it often gives a loud alarm call that draws attention to itself—yet the warning is usually heard by its relatives. How can risking your own life to warn others ever be an evolutionary advantage?

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Kin Recognition and Nepotism in Rodent Colonies

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