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Allo-parental care in Damaraland mole-rats is female biased and age dependent, though independent of testosterone levels
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM). Univ Cambridge, UK. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID-id: 0000-0002-5582-2306
Univ Cambridge, UK.
Kuruman River Reserve, South Africa.
Kuruman River Reserve, South Africa;Univ Helsinki, Finland.ORCID-id: 0000-0002-6580-5016
Vise andre og tillknytning
2018 (engelsk)Inngår i: Physiology and Behavior, ISSN 0031-9384, E-ISSN 1873-507X, Vol. 193, s. 149-153Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In Damaraland mole-rats (Fukomys damal-ensis), non-breeding subordinates contribute to the care of offspring born to the breeding pair in their group by carrying and retrieving young to the nest. In social mole-rats and some cooperative breeders, dominant females show unusually high testosterone levels and it has been suggested that high testosterone levels may increase reproductive and aggressive behavior and reduce investment in allo-parental and parental care, generating age and state-dependent variation in behavior. Here we show that, in Damaraland mole-rats, allo-parental care in males and females is unaffected by experimental increases in testosterone levels. Pup carrying decreases with age of the non-breeding helper while the change in social status from non-breeder to breeder has contrasting effects in the two sexes. Female breeders were more likely than female non-breeders to carry pups but male breeders were less likely to carry pups than male non-breeders, increasing the sex bias in parental care compared to allo-parental care. Our results indicate that testosterone is unlikely to be an important regulator of allo-parental care in mole-rats.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 193, s. 149-153
Emneord [en]
Testosterone, Allo-parental care, Parental care, Sex bias, Age related polyethism
HSV kategori
Forskningsprogram
Naturvetenskap, Ekologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-77725DOI: 10.1016/j.physbeh.2018.03.021ISI: 000442705500015PubMedID: 29730030Scopus ID: 2-s2.0-85048731820OAI: oai:DiVA.org:lnu-77725DiVA, id: diva2:1248157
Tilgjengelig fra: 2018-09-14 Laget: 2018-09-14 Sist oppdatert: 2019-08-29bibliografisk kontrollert

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