Abstract：
:In Damaraland mole-rats (Fukomys damarensis), 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.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Zöttl M,Vullioud P,Goddard K,Torrents-Ticó M,Gaynor D,Bennett NC,Clutton-Brock Tdoi
10.1016/j.physbeh.2018.03.021subject
Has Abstractpub_date
2018-09-01 00:00:00pages
149-153issue
Pt Aeissn
0031-9384issn
1873-507Xpii
S0031-9384(18)30144-6journal_volume
193pub_type
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