Publication

Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys

Hemelrijk, C. K., Wubs, M., Gort, G., Botting, J. & van de Waal, E., 14-May-2020, In : Frontiers in Psychology. 11, p. 839 11 p., 839.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Hemelrijk, C. K., Wubs, M., Gort, G., Botting, J., & van de Waal, E. (2020). Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys. Frontiers in Psychology, 11, 839. [839]. https://doi.org/10.3389/fpsyg.2020.00839

Author

Hemelrijk, Charlotte Korinna ; Wubs, Matthias ; Gort, Gerrit ; Botting, Jennifer ; van de Waal, Erica. / Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys. In: Frontiers in Psychology. 2020 ; Vol. 11. pp. 839.

Harvard

Hemelrijk, CK, Wubs, M, Gort, G, Botting, J & van de Waal, E 2020, 'Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys', Frontiers in Psychology, vol. 11, 839, pp. 839. https://doi.org/10.3389/fpsyg.2020.00839

Standard

Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys. / Hemelrijk, Charlotte Korinna; Wubs, Matthias; Gort, Gerrit; Botting, Jennifer; van de Waal, Erica.

In: Frontiers in Psychology, Vol. 11, 839, 14.05.2020, p. 839.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Hemelrijk CK, Wubs M, Gort G, Botting J, van de Waal E. Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys. Frontiers in Psychology. 2020 May 14;11:839. 839. https://doi.org/10.3389/fpsyg.2020.00839


BibTeX

@article{38ec03f9965648399be5d448c8434e7e,
title = "Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys",
abstract = "Intersexual dominance relations are important for female mammals, because of their consequences for accessing food and for the degree of sexual control females experience from males. Female mammals are usually considered to rank below males in the dominance hierarchy, because of their typical physical inferiority. Yet, in some groups or species, females are nonetheless dominant over some males (partial female dominance). Intersexual dominance, therefore, also depends on traits other than sexual dimorphism, such as social support, social exchange, group adult sex-ratio, and the widespread self-reinforcing effects of winning and losing fights, the {"}winner-loser effect.{"} The importance of sex-ratio and the winner-loser effect remains poorly understood. A theoretical model, DomWorld, predicts that in groups with a higher proportion of males, females are dominant over more males when aggression is fierce (not mild). The model is based on a small number of general processes in mammals, such as grouping, aggression, the winner-loser effect, the initially greater fighting capacity of males than females, and sex ratio. We expect its predictions to be general and suggest they be examined in a great number of species and taxa. Here, we test these predictions in four groups of wild vervet monkeys (Chlorocebus pygerythrus) in Mawana game reserve in Africa, using 7 years of data. We confirm that a higher proportion of males in the group is associated with greater dominance of females over males; a result that remains when combining these data with those of two other sites (Amboseli and Samara). We additionally confirm that in groups with a higher fraction of males there is a relatively higher (a) proportion of fights of males with other males, and (b) proportion of fights won by females against males from the fights of females with any adults. We reject alternative hypotheses that more dominance of females over males could be attributed to females receiving more coalitions from males, or females receiving lowered male aggression in exchange for sexual access (the docile male hypothesis). We conclude that female dominance relative to males is dynamic and that future empirical studies of inter-sexual dominance will benefit by considering the adult sex-ratio of groups.",
keywords = "the winner-loser effect, dominance hierarchy, fierceness of aggression, female dominance over males, adult sex-ratio, vervet monkeys, SOCIAL-DOMINANCE, HIERARCHY FORMATION, FEMALE DOMINANCE, FEEDING PRIORITY, BEHAVIOR, MACAQUES, CONFLICT, SUPPORT, BONOBOS, MODELS",
author = "Hemelrijk, {Charlotte Korinna} and Matthias Wubs and Gerrit Gort and Jennifer Botting and {van de Waal}, Erica",
note = "Copyright {\textcopyright} 2020 Hemelrijk, Wubs, Gort, Botting and van de Waal.",
year = "2020",
month = may,
day = "14",
doi = "10.3389/fpsyg.2020.00839",
language = "English",
volume = "11",
pages = "839",
journal = "Frontiers in Psychology",
issn = "1664-1078",
publisher = "Frontiers Media SA",

}

RIS

TY - JOUR

T1 - Dynamics of intersexual dominance and adult sex-ratio in wild vervet monkeys

AU - Hemelrijk, Charlotte Korinna

AU - Wubs, Matthias

AU - Gort, Gerrit

AU - Botting, Jennifer

AU - van de Waal, Erica

N1 - Copyright © 2020 Hemelrijk, Wubs, Gort, Botting and van de Waal.

PY - 2020/5/14

Y1 - 2020/5/14

N2 - Intersexual dominance relations are important for female mammals, because of their consequences for accessing food and for the degree of sexual control females experience from males. Female mammals are usually considered to rank below males in the dominance hierarchy, because of their typical physical inferiority. Yet, in some groups or species, females are nonetheless dominant over some males (partial female dominance). Intersexual dominance, therefore, also depends on traits other than sexual dimorphism, such as social support, social exchange, group adult sex-ratio, and the widespread self-reinforcing effects of winning and losing fights, the "winner-loser effect." The importance of sex-ratio and the winner-loser effect remains poorly understood. A theoretical model, DomWorld, predicts that in groups with a higher proportion of males, females are dominant over more males when aggression is fierce (not mild). The model is based on a small number of general processes in mammals, such as grouping, aggression, the winner-loser effect, the initially greater fighting capacity of males than females, and sex ratio. We expect its predictions to be general and suggest they be examined in a great number of species and taxa. Here, we test these predictions in four groups of wild vervet monkeys (Chlorocebus pygerythrus) in Mawana game reserve in Africa, using 7 years of data. We confirm that a higher proportion of males in the group is associated with greater dominance of females over males; a result that remains when combining these data with those of two other sites (Amboseli and Samara). We additionally confirm that in groups with a higher fraction of males there is a relatively higher (a) proportion of fights of males with other males, and (b) proportion of fights won by females against males from the fights of females with any adults. We reject alternative hypotheses that more dominance of females over males could be attributed to females receiving more coalitions from males, or females receiving lowered male aggression in exchange for sexual access (the docile male hypothesis). We conclude that female dominance relative to males is dynamic and that future empirical studies of inter-sexual dominance will benefit by considering the adult sex-ratio of groups.

AB - Intersexual dominance relations are important for female mammals, because of their consequences for accessing food and for the degree of sexual control females experience from males. Female mammals are usually considered to rank below males in the dominance hierarchy, because of their typical physical inferiority. Yet, in some groups or species, females are nonetheless dominant over some males (partial female dominance). Intersexual dominance, therefore, also depends on traits other than sexual dimorphism, such as social support, social exchange, group adult sex-ratio, and the widespread self-reinforcing effects of winning and losing fights, the "winner-loser effect." The importance of sex-ratio and the winner-loser effect remains poorly understood. A theoretical model, DomWorld, predicts that in groups with a higher proportion of males, females are dominant over more males when aggression is fierce (not mild). The model is based on a small number of general processes in mammals, such as grouping, aggression, the winner-loser effect, the initially greater fighting capacity of males than females, and sex ratio. We expect its predictions to be general and suggest they be examined in a great number of species and taxa. Here, we test these predictions in four groups of wild vervet monkeys (Chlorocebus pygerythrus) in Mawana game reserve in Africa, using 7 years of data. We confirm that a higher proportion of males in the group is associated with greater dominance of females over males; a result that remains when combining these data with those of two other sites (Amboseli and Samara). We additionally confirm that in groups with a higher fraction of males there is a relatively higher (a) proportion of fights of males with other males, and (b) proportion of fights won by females against males from the fights of females with any adults. We reject alternative hypotheses that more dominance of females over males could be attributed to females receiving more coalitions from males, or females receiving lowered male aggression in exchange for sexual access (the docile male hypothesis). We conclude that female dominance relative to males is dynamic and that future empirical studies of inter-sexual dominance will benefit by considering the adult sex-ratio of groups.

KW - the winner-loser effect

KW - dominance hierarchy

KW - fierceness of aggression

KW - female dominance over males

KW - adult sex-ratio

KW - vervet monkeys

KW - SOCIAL-DOMINANCE

KW - HIERARCHY FORMATION

KW - FEMALE DOMINANCE

KW - FEEDING PRIORITY

KW - BEHAVIOR

KW - MACAQUES

KW - CONFLICT

KW - SUPPORT

KW - BONOBOS

KW - MODELS

U2 - 10.3389/fpsyg.2020.00839

DO - 10.3389/fpsyg.2020.00839

M3 - Article

C2 - 32477214

VL - 11

SP - 839

JO - Frontiers in Psychology

JF - Frontiers in Psychology

SN - 1664-1078

M1 - 839

ER -

ID: 126876600