Similarities, differences, and seasonal patterns in the diets ofEulemur rubriventer andEulemur fulvus rufus in the Ranomafana National Park, Madagascar

Overdorff, Deborah J.

doi:10.1007/bf02192188

Cited by 189 publications

(178 citation statements)

References 26 publications

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“…During the same season, chimpanzees also increase their feeding time. These results are in accordance with other studies on the relationship between seasonal variation in food availability and primate behavior (Gursky 2000;Hill and Dunbar 2002;Overdorff 1993). For example, Doran (1997) suggested that Taï chimpanzees devoted more time to feeding and reduced their DJL during low food availability.…”

Section: Discussionsupporting

confidence: 92%

Daily Energy Balance and Protein Gain Among Pan troglodytes verus in the Taï National Park, Côte d’Ivoire

2009

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Energy balance and protein gain contribute significantly to an animal's survival. Although data are available for certain species in captive settings, there is little information on these factors for primates living in their natural environments. In this preliminary study, we combined detailed behavioral, phonological, and chemical data for a well habituated chimpanzee community from the Taï National Park, Côte d'Ivoire, with estimates of energy gain and expenditure from captive chimpanzees and humans to investigate how energy balance and protein gain across age-sex categories are affected by seasonal variations in food availability and how chimpanzees correspondingly alter their feeding and daily journey length (DJL). Comparisons between fruiting seasons characterized by varying quantities and qualities of available food revealed that food quality had the largest effect on individual energy balance and protein gain. Within given fruit seasons, energy balance and protein gain did not vary among age-sex categories. However, there was, variation across seasons among adult males and young of both sexes, but not among adult females. Our study revealed important effects of periods of food scarcity to which chimpanzees reacted by reducing their DJL and increasing their feeding time.

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Section: Discussionsupporting

confidence: 92%

Daily Energy Balance and Protein Gain Among Pan troglodytes verus in the Taï National Park, Côte d’Ivoire

2009

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“…Foraging group size was used as a measure of social complexity because it represents a consistent measure that is widely reported, and because primates are expected to encounter more predators and engage in more vocal communication during foraging than during resting (especially in strepsirrhines that form relatively small sleeping groups) [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Insufficient data were available to estimate the average group size of Eulemur fulvus collaris; accordingly, we substituted data from Eulemur fulvus fulvus owing to its similar social behaviours [35][36][37][38][39]42].…”

Section: Materials and Methods (A) Experimental Procedures (I) General mentioning

confidence: 99%

Social drive and the evolution of primate hearing

Ramsier

Cunningham

Finneran

et al. 2012

Phil. Trans. R. Soc. B

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The structure and function of primate communication have attracted much attention, and vocal signals, in particular, have been studied in detail. As a general rule, larger social groups emit more types of vocal signals, including those conveying the presence of specific types of predators. The adaptive advantages of receiving and responding to alarm calls are expected to exert a selective pressure on the auditory system. Yet, the comparative biology of primate hearing is limited to select species, and little attention has been paid to the effects of social and vocal complexity on hearing. Here, we use the auditory brainstem response method to generate the largest number of standardized audiograms available for any primate radiation. We compared the auditory sensitivities of 11 strepsirrhine species with and without independent contrasts and show that social complexity explains a significant amount of variation in two audiometric parameters-overall sensitivity and high-frequency limit. We verified the generality of this latter result by augmenting our analysis with published data from nine species spanning the primate order. To account for these findings, we develop and test a model of social drive. We hypothesize that social complexity has favoured enhanced hearing sensitivities, especially at higher frequencies.

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“…However, the food supply of the species can be affected by the phenology of the species they feed on. The relationship between the seasonality, availability of resources and the behavior in primates has been widely studied (Hladik, 1977;Overdorff, 1993;Gursky, 2000). In tropical dry forests, which are characterized by 4-6 months of drought, seasonal climate and tree phenology are not highly correlated.…”

Section: Discussionmentioning

confidence: 99%

Primer censo del mono aullador negro (<i>Alouatta palliata aequatorialis</i>) en el Chocó Biogeográfico Colombiano

Ramírez-Orjuela¹,

Sánchez-Dueñas²

2005

Neotrop. Primates

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Similarities, differences, and seasonal patterns in the diets ofEulemur rubriventer andEulemur fulvus rufus in the Ranomafana National Park, Madagascar

Cited by 189 publications

References 26 publications

Daily Energy Balance and Protein Gain Among Pan troglodytes verus in the Taï National Park, Côte d’Ivoire

Daily Energy Balance and Protein Gain Among Pan troglodytes verus in the Taï National Park, Côte d’Ivoire

Social drive and the evolution of primate hearing

Primer censo del mono aullador negro (<i>Alouatta palliata aequatorialis</i>) en el Chocó Biogeográfico Colombiano

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