Factors affecting party size and composition of chimpanzees (Pan troglodytes verus) Bossou, Guinea

Sakura, Osamu

doi:10.1007/bf02735272

Cited by 100 publications

(68 citation statements)

References 31 publications

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“…Mothers can also differentiate among males on the basis of infanticidal potential and respond accordingly (Elwood et al 1990). A possible indication of sexually antago- Wrangham and Smuts 1980;Pusey 1983, 1994b;McComb et al 1993;Sakura 1994;Matsumoto-Oda 1999;Wielgus and Bunnell 2000;Dahle and Swenson 2003;Ben-David et al 2004;Aureli et al 2008;(b) Palombit et al 2001;Crofoot 2007 nistic coevolution in this domain is that the magnitudes of male infanticidal behavior and maternal aggression are positively correlated with one another in genetic strains of mice (Parmigiani et al 1999). The actual effectiveness of maternal aggression in deterring male infanticide in rodents is debated, however.…”

Section: Infanticide As Sexual Conflictmentioning

confidence: 99%

Infanticide as Sexual Conflict: Coevolution of Male Strategies and Female Counterstrategies

Palombit

2015

Cold Spring Harb Perspect Biol

129

172

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One of the earliest recognized forms of sexual conflict was infanticide by males, which imposes serious costs on female reproductive success. Here I review two bodies of evidence addressing coevolved strategies of males and females. The original sexual selection hypothesis arguing that infanticide improves male mating success by accelerating the return of females to fertilizable condition has been generally supported in some taxa-notably, some primates, carnivores, rodents, and cetaceans-but not in other taxa. One result of recent research has been to implicate other selective benefits of infanticide by males in various taxa from insects to birds to mammals, such as acquisition of breeding status or improvement of the female breeding condition. In some cases, however, the adaptive significance of male infanticide remains obscure. The second body of data I review is arguably the most important result of recent research: clarifying the possible female counterstrategies to infanticide. These potential counterstrategies span diverse biological systems, ranging from sexual behavior (e.g., polyandrous mating), to physiology (e.g., the Bruce effect), to individual behavior (e.g., maternal aggression), to social strategies (e.g., association with coalitionary defenders of either sex). Although much remains to be studied, these current data provide compelling evidence of sexually antagonistic coevolution surrounding the phenomenon of infanticide.

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Section: Infanticide As Sexual Conflictmentioning

confidence: 99%

Infanticide as Sexual Conflict: Coevolution of Male Strategies and Female Counterstrategies

Palombit

2015

Cold Spring Harb Perspect Biol

129

172

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“…13 Sugiyama & Koman 1987;SaKura 1994;YamaKoshi 1998YamaKoshi , 2004TaKemoto 2004. 14 Jones & Sabater Pi 1971;Fossey 1974;CLutton-BrocK 1977;Watts 1988Watts , 1984Watts , 1991Watts , 1998Yamagiwa 1999. 15 Tutin et al 1983, McGrew et al 1988. 16 Wrangham 1975GooDaLL 1968GooDaLL , 1983GooDaLL , 1986Wrangham & Smuts 1980. 17 NishiDa & Uehara 1983, NishiDa 1990, Matsumoto-ODa 2002, NishiDa et al 2003 ReynoLDs & ReynoLDs 1965, Newton-Fisher 1999, Fawcett 2000, Tweheyo et al 2004 GhigLieri 1984, Wrangham 1986, Watts 2000…”

Section: Datamentioning

confidence: 99%

Time and distribution: a model of ape biogeography

Lehmann

Korstjens

Dunbar

2008

Ethology Ecology & Evolution

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We use data from 20 chimpanzee, bonobo and gorilla study sites to develop an African great ape time budgets model to predict the animals' capacity to survive in a range of habitats across sub-Saharan Africa. The model uses body mass and climatic data to predict the time animals must allocate to key activities (feeding, moving, resting and social interaction), and then uses these to assess the limiting group size that could be sustained in a particular habitat. The model is robust against changes in minimum cut-off values, and predicts the current biogeographic distributions of the two African ape species remarkably well. Predicted group sizes for Pan and Gorilla are close to observed averages. The model also indicates that moving time plays a crucial role for both Pan and Gorilla site presence: i.e. at sites where they are absent it is primarily moving time that is increased as compared to other time budget variables. Finally, the model demonstrates that Pan and Gorilla distributions and group sizes can be accurately modelled by simply modifying the body mass variable, indicating that both share a similar underlying ecological bauplan.

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“…Infants are in almost constant contact with their mothers for the first 4-6 mo of life (28), when they have low levels of social interactions with nonmothers (this study). Mothers with infants later form nursery groups that contain several mothers (44)(45)(46)(47). Infants only begin traveling under their own power more than they are carried by their mother around the age of 3.5 y (48).…”

mentioning

confidence: 99%

Early social exposure in wild chimpanzees: Mothers with sons are more gregarious than mothers with daughters

Murray

Lonsdorf

Stanton

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

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In many mammals, early social experience is critical to developing species-appropriate adult behaviors. Although mother-infant interactions play an undeniably significant role in social development, other individuals in the social milieu may also influence infant outcomes. Additionally, the social skills necessary for adult success may differ between the sexes. In chimpanzees (Pan troglodytes), adult males are more gregarious than females and rely on a suite of competitive and cooperative relationships to obtain access to females. In fission-fusion species, including humans and chimpanzees, subgroup composition is labile and individuals can vary the number of individuals with whom they associate. Thus, mothers in these species have a variety of social options. In this study, we investigated whether wild chimpanzee maternal subgrouping patterns differed based on infant sex. Our results show that mothers of sons were more gregarious than mothers of daughters; differences were especially pronounced during the first 6 mo of life, when infant behavior is unlikely to influence maternal subgrouping. Furthermore, mothers with sons spent significantly more time in parties containing males during the first 6 mo. These early differences foreshadow the well-documented sex differences in adult social behavior, and maternal gregariousness may provide sons with important observational learning experiences and social exposure early in life. The presence of these patterns in chimpanzees raises questions concerning the evolutionary history of differential social exposure and its role in shaping sex-typical behavior in humans.infant socialization | maternal behavior | chimpanzees | fission-fusion species E arly socialization is critical to developing social competency later in life. In mammals, mothers have enormous influence on their offspring's early social experience, with implications for adult social behavior. In humans, the relative contribution of parental and others' social influence on the development of sextypical behavior receives considerable attention and is often debated (1-4). Comparative research provides insight into the origins and development of sex differences in the absence of human cultural sex socialization. Decades of research in rodent and primate models have demonstrated that social deprivation curtails the development of species-appropriate behaviors (5-8) and cognition (9, 10). Primate mothers are critical for the normal social development of their infants (11-13), with classic studies demonstrating that maternal deprivation is associated with intense anxiety (14), inappropriate aggression (15), and an inability to form social relationships (16). The mother-infant relationship is therefore critical to proper social development; however, research also demonstrates the importance of the larger social milieu (17)(18)(19)(20). For example, a recent study in mice found that early interactions with mothers and peers independently shape adult behavior (21). Likewise, some negative impacts of maternal deprivati...

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Factors affecting party size and composition of chimpanzees (Pan troglodytes verus) Bossou, Guinea

Cited by 100 publications

References 31 publications

Infanticide as Sexual Conflict: Coevolution of Male Strategies and Female Counterstrategies

Infanticide as Sexual Conflict: Coevolution of Male Strategies and Female Counterstrategies

Time and distribution: a model of ape biogeography

Early social exposure in wild chimpanzees: Mothers with sons are more gregarious than mothers with daughters

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