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Sex differences in timing and context of dispersal in Damaraland mole-rats (Fukomys damarensis)
Univ Helsinki, Finland;Univ Cambridge, UK.
Univ Pretoria, South Africa.
Univ Cape Town, South Africa.
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
2018 (engelsk)Inngår i: Journal of Zoology, ISSN 0952-8369, E-ISSN 1469-7998, Vol. 306, nr 4, s. 252-257Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Dispersal behaviour in cooperatively breeding mammals often differs between the sexes, which can affect how individuals of both sexes compete for breeding opportunities. However, it is largely unknown how the males and females in social mole-rats differ in frequency, timing and social context of dispersal. Here we show, in Damaraland mole-rats (Fukomys damarensis), that rainfall increases dispersal probabilities in both sexes. Dispersal is male biased with males dispersing earlier and more frequently in dispersal coalitions than females. Most non-reproductive individuals disperse from the natal groups before reproducing. Territory inheritance is rare, but when it occurs, female non-breeders inherit the breeding position from the precious breeding female. After dispersing from the natal group, males are more likely than females to join other established groups and to replace the resident breeder. Our study suggests that differences in dispersal strategy may generate contrasts in intra-sexual competition, where male breeders are more often challenged by competitors from outside the group and female breeders may face higher competition from individuals within the group.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2018. Vol. 306, nr 4, s. 252-257
Emneord [en]
dispersal, cooperative breeding, intra-sexual competition, males, eusociality, Fukomys damarensis, Damaraland mole-rats
HSV kategori
Forskningsprogram
Naturvetenskap, Ekologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-79750DOI: 10.1111/jzo.12602ISI: 000453069200005Scopus ID: 2-s2.0-85052386115OAI: oai:DiVA.org:lnu-79750DiVA, id: diva2:1281942
Tilgjengelig fra: 2019-01-23 Laget: 2019-01-23 Sist oppdatert: 2019-08-29bibliografisk kontrollert

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