Locomotory activity of captive Cryptomys hottentotus (Mammalia: Bathyergidae), a fossorial rodent.
Colony size and structure, activity patterns and foraging behaviour of a colony of the social mole-rat Cryptomys damarensis (Bathyergidae).
Circadian activity rhythms in the solitary Cape molerat (Georychus capensis: Bathyergidae) with some evidence of splitting.
Within Phiomorpha, the ~31 Ma divergence of the naked mole-rat (Heterocephalus) from all other mole-rats argues for recognition of this group as Bathyergoidea, containing the families Heterocephalidae and
Bathyergidae. Within Caviomorpha, the 4 traditional superfamilies were recovered with ~32 Ma stem divergences as Cavioidea + Erethizontoidea and Chinchilloidea + Octodontoidea.
In these groups, some individuals, generally females, more or less temporarily (marmosets and tamarins: Cebidae, Primates) or more or less permanently (naked mole rats:
Bathyergidae, Rodentia) delay individual (selfish) reproduction to assist dominant group members rear one or more offspring who are usually the helper's kin.