Coefficient of genetic relationship and the probability of intragenealogical fission in Macaca mulatta

Chepko-Sade, B. Diane; Olivier, Thomas J.

doi:10.1007/bf00293675

Cited by 62 publications

(27 citation statements)

References 12 publications

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“…In both Cayo Santiago and Japan, group fission tends to occur when subordinate females leave their natal group and form smaller, splinter groups. It has been suggested that such fissions may permit low-ranking females to increase their fitness relative to what it was in their former group [Chepko-Sade and Olivier, 1979;Koyama, 1970], Occasional affinitive interactions by females with the members of other groups have been observed in macaques and baboons [Boelkins & Wilson, 1972;Hausfater, 1972;Cheney & Seyfarth, 1977], and cases of female transfer have also been reported [Itani et al, 1963;Sugiyama, 1976;Packer, 1979a], While the ranks of these females were not known, and affinitive interactions between females of different groups remains poorly documented, it is conceivable that low-ranking females have relatively more to gain than high-ranking females from the establishment of bonds with individuals from neighboring groups.…”

Section: Discussionmentioning

confidence: 99%

Intergroup Encounters among Free-Ranging Vervet Monkeys

Cheney¹

1981

IJFP

146

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High-ranking vervet monkeys threatened the members of other groups more than did low-ranking individuals, while only low-ranking females and juvenile males interacted affinitively with the members of other groups. Adult males were most aggressive during intergroup encounters with groups from which males transferred. In contrast, females were most aggressive to groups from which males were not observed to transfer. It is postulated that the behavior of individuals during intergroup encounters may be related to benefits derived from excluding intruders from the group’s resources. Furthermore, it seems possible that relations between groups are influenced by previous male transfers, and that female aggression affects the distribution of male movement between groups.

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Section: Discussionmentioning

confidence: 99%

Intergroup Encounters among Free-Ranging Vervet Monkeys

Cheney¹

1981

IJFP

146

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“…if dominant males father more offspring (see Dewsbury 1982;Robinson 1982) and prefer to mate with dominant females (Wolfe 1979;Takahata 1982;Wilson et al 1982; but see Small & Smith 1982), then on average the sons of dominant females will be paternally related to more troop members than will the sons of lower-ranking females. Furthermore, dominant matrilines are often larger than subordinate ones (Sade et al 1976;Chepko-Sade & Olivier 1979) and so sons of dominant females will have more maternal relatives in the group as well. Compared with sons of subordinate females, the young dominant male will have more relatives, with higher average r, within his natal troop.…”

Section: Voluntary Natal Dispersalmentioning

confidence: 99%

Are dispersal and inbreeding avoidance related?

1984

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Abstract. Sex differences in dispersal and inter-group transfer by birds and mammals are often considered to be evolved responses to the phenomenon of inbreeding depression. This belief is derived from 'natural selection logic', which holds that (1) because inbreeding depression is demonstrably costly, selection must have acted to minimize its occurrence, and (2) as sex differences in dispersal often appear to be the only thing preventing inbreeding, these sex differences must be the expected adaptations for avoiding inbreeding depression. However, although the sex differences in median dispersal distance observed among many small mammals and birds may reduce average levels of inbreeding within a population, they nevertheless leave the majority of individuals 'at risk' for inbreeding; such differences can be responses to inbreeding depression only in a group selection model. Furthermore, natal dispersal by both sexes occurs in many group-living species. In these species, emigration by individuals of one sex cannot easily be attributed to avoiding inbreeding because opposite-sex relatives also emigrate. Though most authors acknowledge that sexual dispersal patterns may be epiphenomenal consequences of other factors (e.g. intrasexual aggression), this point is rarely considered further. In this paper we critically review several frequently cited examples of differential dispersal, and conclude that 'other factors', such as intrasexual competition and territory choice, explain these observations more completely and consistently than does the inbreeding avoidance hypothesis. Observed dispersal patterns simply reflect sex differences in the balance between the advantages of philopatry and the costs of intrasexual competition.

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“…Oes généa!ogies ou au moins certains arbres généalogiques ont pu ainsi être reconstruits (Chepko-Sade et Olivier, 1979). Les méthodes progressent rapidement (Graur et Li, 2000) Et 'J.ti!<c:R..n{ <!ifférents t' §?eS <!e ?O('jrnor'jW.isme (séquences d'ADN nucléaire ou mitochondrial, amplifications a!éatoir~ RA?D, "\lariabi!ité du nombr~ de Co'j)i5 mini-et miuosate!…”

Section: I: Observation Des Déplacements Individuelsunclassified

La notion de population en dynamique et génétique des populations

Debouzie

1999

Nature Sciences Sociétés

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Coefficient of genetic relationship and the probability of intragenealogical fission in Macaca mulatta

Cited by 62 publications

References 12 publications

Intergroup Encounters among Free-Ranging Vervet Monkeys

Intergroup Encounters among Free-Ranging Vervet Monkeys

Are dispersal and inbreeding avoidance related?

La notion de population en dynamique et génétique des populations

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