The naked mole‐rat ( Heterocephalus glaber )

Résumé fourni par la source

Naked mole-rats (NMRs) are more closely related to guinea pigs than laboratory rats and mice. The long lifespan and lack of senescence is becoming one of the most studied aspects of NMR biology, and this has led to an increase in the number of captive populations kept in laboratories. The NMR is the longest-lived rodent, with maximum lifespan in captivity exceeding 30 years. NMRs are renowned for their social organisation, resembling that of eusocial insects such as bees, ants, wasps and termites. NMRs are unusual in their extreme reproductive division of labour and skew in lifetime reproductive success. Sexing of NMRs can be difficult because males do not have external testes, and the fact that non-breeding males and females are socially suppressed and in a prepubertal state. NMRs are unable to regulate their body temperature independently of the environment and are therefore essentially poikilothermic.

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