Correlates of self-directed behaviour in wild white-faced capuchins

Citation
Jh. Manson et S. Perry, Correlates of self-directed behaviour in wild white-faced capuchins, ETHOLOGY, 106(4), 2000, pp. 301-317
Citations number
50
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences","Neurosciences & Behavoir
Journal title
ETHOLOGY
ISSN journal
0179-1613 → ACNP
Volume
106
Issue
4
Year of publication
2000
Pages
301 - 317
Database
ISI
SICI code
0179-1613(200004)106:4<301:COSBIW>2.0.ZU;2-J
Abstract
Elevated rates of self-directed behaviour (SDB) such as self-scratching and autogrooming have been widely used in recent years as an indicator of anxi ety in catarrhine primates. This study presents the first examination of co rrelates of SDB rates in a platyrrhine primate. Subjects were 8 wild female white-faced capuchins at Lomas Barbudal, Costa Rica, who were observed for 119 h of focal individual follows. The subjects performed significantly mo re self-scratching and autogrooming while in close proximity to conspecific s than while alone, irrespective of whether the neighbour was dominant or s ubordinate to them. This result was attributable to elevated SDB rates duri ng the 30 s preceding and following allogrooming bouts. Furthermore, subjec ts engaged in more SDB while in proximity to females (a) that were closer t o them in dominance rank and (b) with whom they spent a larger proportion o f their time in proximity. Self-directed behaviour rates after conflicts di d not differ from non-postconflict rates. Nor were SDB rates above baseline levels during the 30 s before subjects descended to the ground. These resu lts may provide support for the view that SDB rates index anxiety in this s pecies, if grooming decisions signal individuals' current allegiances and a re therefore a source of anxiety, even if being groomed is, itself, relaxin g. Postconflict preparation for further aggression may mitigate against scr atching and autogrooming in a fast-moving arboreal species.