Kin recognition and the 'armpit effect': evidence of self-referent phenotype matching.

Abstract excerpt

In species with multiple paternity or maternity, animals may best assess their relatedness to unfamiliar conspecifics by comparing their own phenotype(s) with those of unidentified individuals. Yet whether animals can recognize kin through self-matching is controversial. Because golden hamsters (Mesocricetus auratus) mate multiply and can produce multiply sired litters, they were tested for their ability to use...

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