A preliminary study of kinship and social organization in a semi-free-ranging group ofLemur catta

Taylor, Linda; Sussman, Robert W.

doi:10.1007/bf02692291

Cited by 87 publications

(87 citation statements)

References 21 publications

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“…Ten-minute continuous-time focal animal samples (Altmann, 1974) were used to determine individual activity budgets, defense behaviors, and aggressive and affiliative interactions with conspecifics. Recorded behaviors included feed, allogroom, scent, intragroup agonism and intergroup encounter (IGE), and were defined in accordance with ethograms previously described for L. catta (Jolly, 1966;Taylor, 1986;Gould, 1994). All adult males and females in each group (a total of 49 focal individuals; Table 1) were included in focal sessions, and could be identified from at least 25 m with binoculars by notable, characteristic markings (e.g.…”

Section: Field Methodsmentioning

confidence: 99%

Crowding as a primary source of stress in an endangered fragment‐dwelling strepsirrhine primate

Gabriel

Gould

Cook

2017

Animal Conservation

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Nutritional and social challenges arising from habitat fragmentation can be significant sources of stress for animals. If prolonged, such stressors can pose a threat to the longevity of a species within a fragmented landscape. While each may elicit a physiological response, the coupled and often additive nature of these stressors can make it difficult to determine their relative impact on an individual or population. We measured fecal glucocorticoids (fGC) in two populations of Lemur catta, an endangered strepsirrhine primate, inhabiting forest fragments that vary markedly in resource structure and population density. We also examined the relative importance of behavioral variables indicative of feeding environment, intergroup territoriality, and intragroup social interactions in predicting fGC levels in these populations. Lemur catta living with ample food resources but at high population density exhibited higher fGC concentrations throughout the study period, independent of sex or reproductive state. At both sites, fGC levels reflected consistent seasonal variation, with lowest levels occurring during the resource-rich pre-mating period. Foraging effort was positively associated with fGC levels at each site, yet the population exhibiting the highest foraging effort had consistently lower levels of fGC. Intergroup territoriality was a positive predictor and intragroup agonism a negative predictor of fGC levels; however, trends in these variables were inconsistent when examining the two sites separately. Within-site group differences highlighted the additive nature of nutritional and social stressors in predicting fGC levels. Our results suggest that the intense or unpredictable impact of crowding and, correspondingly, heightened intergroup resource defense may be an important consideration when addressing long-term conservation initiatives for fragmentdwelling L. catta.

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Section: Field Methodsmentioning

confidence: 99%

Crowding as a primary source of stress in an endangered fragment‐dwelling strepsirrhine primate

Gabriel

Gould

Cook

2017

Animal Conservation

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“…Closely related animals spend more time grooming each other and remain in close proximity more so than distantly related animals or nonkin. Perhaps most important is the fact that no copulations occur within matrilines, resulting in outbreeding maintenance through female choice (Taylor and Sussman 1985).…”

Section: Behaviormentioning

confidence: 99%

Lemur catta (Primates: Lemuridae)

Wilson

Hanlon

2010

Mammalian Species

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“…Within troops, female ringtails have more aggressive encounters Lemur Social Structure 5 than males [70]. Matrilines can effectively eliminate other matrilines, through a long sequence of aggressive episodes [75][76][77]. However, few of the aggressive acts are polyadic [59].…”

Section: Lemur Catta: An Exception?mentioning

confidence: 99%

Pair-Bonding, Female Aggression and the Evolution of Lemur Societies

Jolly¹

1998

IJFP

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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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A preliminary study of kinship and social organization in a semi-free-ranging group ofLemur catta

Cited by 87 publications

References 21 publications

Crowding as a primary source of stress in an endangered fragment‐dwelling strepsirrhine primate

Crowding as a primary source of stress in an endangered fragment‐dwelling strepsirrhine primate

Lemur catta (Primates: Lemuridae)

Pair-Bonding, Female Aggression and the Evolution of Lemur Societies

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