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Dubuc, C.; Chapais, B. |
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Title  |
Feeding Competition in Macaca fascicularis : An Assessment of the Early Arrival Tactic |
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2007 |
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International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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male tolerance – alternative tactics – arrival order – dominance – Macaca fascicularis |
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In primate species with unidirectional dominance relationships, rank order restricts the access of nondominant females to clumped resources. However, females might attempt to bypass the rank order by reaching feeding sites before the highest ranking individuals (early arrival tactic) when there are net benefits. We therefore analyzed the order of arrival to the feeding site of the adult members of a captive group of long-tailed macaques. We used 2 experimental conditions that differed in the spatial distribution of a fixed amount of food (large vs. small patch). Though each condition induced contest competition, it was stronger in the small-patch condition. Arrival order does not correlate with dominance rank in either experimental condition. The α-male and α-female reached the feeding site 10-30 s after the beginning of the test. Some females seized on opportunities to reach the feeding site before them, especially in the large-patch condition. They used the early arrival tactic when the risks of aggression were relatively low, which subjects accomplished either by being dominant or by being nondominant but tolerated by the α-male. Social tolerance may provide individuals with an alternative means to obtain resources. In sum, variation in food abundance and distribution may affect the extent to which rank order determines order of arrival to feeding sites. A higher rank may confer priority in the choice of tactics, but not necessarily priority of access to the resources themselves. |
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refbase @ user @ |
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812 |
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Erhart, E.; Overdorff, D. |
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Title |
Female Coordination of Group Travel in Wild Propithecus and Eulemur |
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Journal Article |
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Year |
1999 |
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International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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20 |
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6 |
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927-940-940 |
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Biomedical and Life Sciences |
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Coordination of primate group movements by individual group members is generally categorized as leadership behavior, which entails several steps: deciding where to move next, initiating travel, and leading a group between food, water sources, and rest sites. Presumably, leaders are able to influence their daily foraging efficiency and nutritional intake, which could influence an individual's feeding ecology and long-term reproductive success. Within anthropoid species, females lead group movements in most female-bonded groups, while males lead groups in most nonfemale-bonded groups. Group leadership has not been described for social prosimians, which are typically not female-bonded. We describe group movements in two nonfemale-bonded, lemurid species living in southeastern Madagascar, Propithecus diadema edwardsi and Eulemur fulvus rufus. Although several social lemurids exhibit female dominance Eulemur fulvus rufus does not, and evidence for female dominance is equivocal in Propithecus diadema edwardsi. Given the ecological stresses that females face during reproduction, we predict that females in these two species will implement alternative behavioral strategies such as group leadership in conjunction with, or in the absence of, dominance interactions to improve access to food. We found that females in both species initiated and led group movements significantly more often than males did. In groups with multiple females, one female was primarily responsible for initiating and leading group movements. We conclude that female nutritional needs may determine ranging behavior to a large extent in these prosimian species, at least during months of gestation and lactation. |
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Springer Netherlands |
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0164-0291 |
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Equine Behaviour @ team @ |
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5308 |
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Wittig, R.M.; Boesch, C. |
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Food Competition and Linear Dominance Hierarchy Among Female Chimpanzees of the Ta National Park |
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2003 |
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International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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24 |
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4 |
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847-867 |
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Dominance rank in female chimpanzees correlates positively with reproductive success. Although a high rank obviously has an advantage for females, clear (linear) hierarchies in female chimpanzees have not been detected. Following the predictions of the socio-ecological model, the type of food competition should affect the dominance relationships among females. We investigated food competition and relationships among 11 adult female chimpanzees in the Ta National Park, C+ete d'Ivoire (West Africa). We detected a formal linear dominance hierarchy among the females based on greeting behaviour directed from the subordinate to the dominant female. Females faced contest competition over food, and it increased when either the food was monopolizable or the number of competitors increased. Winning contests over food, but not age, was related to the dominance rank. Affiliative relationships among the females did not help to explain the absence of greetings in some dyads. However comparison post hoc among chimpanzee study sites made differences in the dominance relationships apparent. We discuss them based on social relationships among females, contest competition and predation. The cross-site comparison indicates that the differences in female dominance hierarchies among the chimpanzee study sites are affected by food competition, predation risk and observation time. |
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Equine Behaviour @ team @ |
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2205 |
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Author |
Judge, P.G.; de Waal, F.B. |
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Title |
Intergroup grooming relations between alpha females in a population of free-ranging rhesus macaques |
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Journal Article |
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Year |
1994 |
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Folia primatologica; international journal of primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
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63 |
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2 |
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63-70 |
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Animals; Animals, Wild; Female; *Grooming; Macaca mulatta/*psychology; Male; Population Density; *Social Behavior |
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Intergroup affiliation among female rhesus macaques, Macaca mulatta, was examined in the captive free-ranging colony of Morgan Island, S.C., USA. The provisioned colony has many social groups (35) and is maintained at a relatively high population density (21 animals/ha) with a relatively low adult male to female ratio (1:8.8). Focal and ad libitum samples were collected on 32 adults (3 males and 29 females) from two groups. Although infrequent, grooming was observed between adult females from different groups, and alpha females were the main participants in these interactions. Colony records indicated that none of the intergroup grooms was between females formerly from a common group. Relations between familiar neighboring groups may be maintained by a combination of both affiliative and aggressive behavior. |
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Yerkes Regional Primate Research Center, Lawrenceville, Ga 30243 |
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0015-5713 |
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PMID:7813977 |
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refbase @ user @ |
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208 |
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Author |
Silk, J.B. |
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Title |
Kin Selection in Primate Groups |
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Journal Article |
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2002 |
Publication |
International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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23 |
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4 |
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849-875 |
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Biomedical and Life Sciences |
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Altruism poses a problem for evolutionary biologists because natural selection is not expected to favor behaviors that are beneficial to recipients, but costly to actors. The theory of kin selection, first articulated by Hamilton (1964), provides a solution to the problem. Hamilton's well-known rule (br > c) provides a simple algorithm for the evolution of altruism via kin selection. Because kin recognition is a crucial requirement of kin selection, it is important to know whether and how primates can recognize their relatives. While conventional wisdom has been that primates can recognize maternal kin, but not paternal kin, this view is being challenged by new findings. The ability to recognize kin implies that kin selection may shape altruistic behavior in primate groups. I focus on two cases in which kin selection is tightly woven into the fabric of social life. For female baboons, macaques, and vervets maternal kinship is an important axis of social networks, coalitionary activity, and dominance relationships. Detailed studies of the patterning of altruistic interactions within these species illustrate the extent and limits of nepotism in their social lives. Carefully integrated analyses of behavior, demography, and genetics among red howlers provide an independent example of how kin selection shapes social organization and behavior. In red howlers, kin bonds shape the life histories and reproductive performance of both males and female. The two cases demonstrate that kin selection can be a powerful source of altruistic activity within primate groups. However, to fully assess the role of kin selection in primate groups, we need more information about the effects of kinship on the patterning of behavior across the Primates and accurate information about paternal kin relationships. |
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Springer Netherlands |
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0164-0291 |
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Equine Behaviour @ team @ |
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5247 |
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Potì , P.; Bartolommei, P.; Saporiti, M. |
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Landmark Use by Cebus apella |
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Journal Article |
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2005 |
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International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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26 |
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921-948 |
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3508 |
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Hrdy, S.B. |
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Male-male competition and infanticide among the langurs (Presbytis entellus) of Abu, Rajasthan |
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1974 |
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Folia Primatologica; International Journal of Primatology |
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Folia Primatol (Basel) |
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22 |
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1 |
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19-58 |
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Aggression; Animals; Animals, Newborn; Coitus; *Competitive Behavior; Estrus; Feeding Behavior; Female; *Haplorhini; Homing Behavior; Humans; India; Infanticide; Leadership; Male; Maternal Behavior; Population Density; Pregnancy; Rain; Seasons; Sex Factors; Sexual Behavior, Animal; Social Behavior; Temperature; Vocalization, Animal |
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0015-5713 |
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PMID:4215710 |
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2051 |
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Marchal, P.; Anderson, J.R. |
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Mirror-image responses in capuchin monkeys (Cebus capucinus): social responses and use of reflected environmental information |
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1993 |
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Folia Primatologica; International Journal of Primatology |
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Folia Primatol (Basel) |
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61 |
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3 |
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165-173 |
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Animals; *Behavior, Animal; Cebus/*psychology; *Cognition; Female; Male; Self Concept; Sex Factors; *Social Behavior |
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Laboratoire de Psychophysiologie (CNRS URA 1295), Universite Louis-Pasteur, Strasbourg, France |
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0015-5713 |
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PMID:8206423 |
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Equine Behaviour @ team @ |
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4180 |
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Sueur, C.; Petit, O. |
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Title |
Organization of Group Members at Departure Is Driven by Social Structure in Macaca |
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Journal Article |
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2008 |
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International Journal of Primatology |
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Int. J. Primatol. |
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29 |
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4 |
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1085-1098 |
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dominance – kinship – Macaca tonkeana – M. mulatta – network metrics – order – movement |
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Abstract Researchers have often explained order of progression of group members during joint movement in terms of the influence of ecological pressures but rarely that of social constraints. We studied the order of joining by group members to a movement in semifree-ranging macaques with contrasting social systems: 1 group of Tonkean macaques (Macaca tonkeana) and 1 group of rhesus macaques (M. mulatta). We used network metrics to understand roles and associations among individuals. The way the macaques joined a movement reflected the social differences between the species in terms of dominance and kinship. Old and dominant male rhesus macaques were more often at the front of the movement, contrary to the Tonkean macaques, which exhibited no specific order. Moreover, rhesus macaques preferred to join high-ranking or related individuals, whereas Tonkean macaques based associations during joining mostly on sexual relationships with a subgroup of peripheral males. |
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Equine Behaviour @ team @ |
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5125 |
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Author |
Jolly, A. |
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Pair-bonding, female aggression and the evolution of lemur societies |
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Journal Article |
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1998 |
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Folia Primatologica; International Journal of Primatology |
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Folia Primatol (Basel) |
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69 Suppl 1 |
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1-13 |
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*Aggression; Animals; Evolution; Female; Intelligence; Lemur/*psychology; Male; *Pair Bond; Sex Factors; Social Dominance; Strepsirhini/psychology |
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Lemur societies have been described as convergent with those of anthropoids, including Papio-like female-bonded multi-male groups. Recent research, however, shows at least 5 pair-bonded species among the Lemuridae and Indriidae. Three more, Eulemur mongoz, Eulemur fulvus and Varecia variegata, have societies combining aspects of pairing with aspects of troop life. The best-known female-bonded societies, those of Lemur catta, Propithecus diadema edwardsi and Propithecus verreauxi, may be assemblages of mother-daughter dyads, capable of high aggression towards other females, but derived from more solitary female ancestors, perhaps also living as pairs. The internal structure of such lemur groups differs from the more extensive kin groups of catarrhines. This in turn may relate to the lemurs' level of social intelligence and to lemur female dominance over males. |
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Department of Ecology and Evolutionary Biology, Princeton University, N.J. 08544, USA. ajolly@princeton.edu |
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PMID:9595685 |
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Equine Behaviour @ team @ |
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4179 |
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