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2015 ; 11
(3
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Salivary oxytocin increases concurrently with testosterone and time away from
home among returning Tsimane hunters
#MMPMID25788487
Jaeggi AV
; Trumble BC
; Kaplan HS
; Gurven M
Biol Lett
2015[Mar]; 11
(3
): ä PMID25788487
show ga
Oxytocin, testosterone and cortisol can have opposing effects on social
behaviour, yet few studies have examined their interactions. We measured changes
in salivary oxytocin, testosterone and cortisol among Tsimane' men returning home
after hunting, an ancient context of male status competition, parental investment
and cooperation. Contra normal diurnal rhythm, oxytocin increased relative to
baseline and this increase was positively associated with duration of the hunt
and change in testosterone, but not cortisol, social context, hunting outcome or
physical activity. The concurrent increase in endogenous peripheral oxytocin and
testosterone is unexpected given their opposing independent effects on social
cognition and behaviour, and has not been observed before. We discuss the
potential significance of these effects for the biology of pair-bonding,
parenting and social foraging in humans and other species.