Estimating diurnal primate densities using distance sampling method in Moukalaba-Doudou National Park, Gabon

Mangama-Koumba, Lilian Brice; Nakashima, Yoshihiro; Mavoungou, Jacques François; Akomo-Okoue, Etienne François; Yumoto, Takakazu; Yamagiwa, Juichi; M’Batchi, Bertrand

doi:10.4314/jab.v99i1.5

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…A total of 441 individuals of primates were sighted during the field survey. Similar to Mangama-Koumba et al (2016), the high encounters of primates during our field survey could be attributed to diverse plant materials (e.g., Acacia and Ficus fruits) composed of the diet of primates. We recorded a total of four primate species, namely C. e. erythrogaster, Cercopithecus mona (Schreber, 1774), Chlorocebus aethiops (Linnaeus, 1758) and Erythrocebus patas (Schreber, 1775).…”

Section: Resultsmentioning

confidence: 65%

Preliminary survey of non-human Primates in four forest areas of Yewa River Basin at the Nigeria-Benin Republic transboundary

et al. 2021

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Information on species' geographic distribution is essential in setting up key areas of conservation priorities and management policies. To date, there is a paucity of information on the primate species that inhabit some forest areas, including the forests along the Yewa River Basin located at the Nigeria-Benin Republic transboundary. To address this, we conducted a field survey across four relatively unexplored fragmented forest areas (Eggua, Igbo-Iju, Ibese and Ebute) within the Yewa River Basin. We recorded 441 individuals belonging to four species -Cercopithecus erythrogaster erythrogaster, Cercopithecus mona, Chlorocebus aethiops and Erythrocebus patas. Our observation record shows that C. mona has the highest encounter rate, while E. patas has the lowest. Our result reveals a seasonal displacement of individuals with the high number of individuals encountered during the rainy season. Most of the primate species (C. e. erythrogaster, C. mona, and E. patas) are of high conservation concern and are categorized as threatened species according to the International Union for the Conservation of Nature. Our study improves knowledge of the primate species within some forests of the Yewa River Basin. We also recommend continuous survey and monitoring of primate species in this area and encourage community-based conservation policies to protect the primates and habitat.

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Section: Resultsmentioning

confidence: 65%

Preliminary survey of non-human Primates in four forest areas of Yewa River Basin at the Nigeria-Benin Republic transboundary

et al. 2021

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Golden‐bellied mangabeys (Cercocebus chrysogaster) exhibit a larger home range and longer travel distances than those of bonobos (Pan paniscus) at LuiKotale, Democratic Republic of the Congo

McLester

Fruth

2023

American J Primatol

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Primate ranging behavior is associated with numerous social and ecological correlates. Interspecific comparisons of ranging behavior can therefore provide insight into the socio‐ecological conditions that characterize a species' niche within its community. We provide the first description of ranging behavior in golden‐bellied mangabeys (Cercocebus chrysogaster), using sympatric bonobos (Pan paniscus) as a comparison. Over 6 months, we recorded GPS tracks at 1‐ and 5‐min intervals from one habituated golden‐bellied mangabey group and two habituated bonobo communities at LuiKotale, central Democratic Republic of the Congo. We compared estimates of home range size, time spent at different elevations, and hourly travel distances between species. We modeled daily travel distances against total monthly rainfall to investigate seasonal variation in daily ranging. The golden‐bellied mangabey home range was similarly sized or larger than each of the two bonobo communities at LuiKotale across estimation methods. Mangabeys visited more of their range per day and spent more time in terra firma forest and less time in swamps than bonobos. Mangabeys traveled significantly farther per day and during midday hours than bonobos, but travel distances did not relate to monthly rainfall in either species. Golden‐bellied mangabeys exhibited wide daily ranging behavior that more closely resembled that of sympatric bonobos than other Cercocebus species. Large homes ranges in mangabeys are likely influenced by food availability in terra firma forest, especially as groups appear to travel long distances between fruit trees and terrestrial food patches. Maximizing daytime activity may help mangabeys avoid competition from heterospecifics and indicates temporal niche partitioning in this primate community.

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Estimating diurnal primate densities using distance sampling method in Moukalaba-Doudou National Park, Gabon

Cited by 2 publications

References 14 publications

Preliminary survey of non-human Primates in four forest areas of Yewa River Basin at the Nigeria-Benin Republic transboundary

Preliminary survey of non-human Primates in four forest areas of Yewa River Basin at the Nigeria-Benin Republic transboundary

Golden‐bellied mangabeys (Cercocebus chrysogaster) exhibit a larger home range and longer travel distances than those of bonobos (Pan paniscus) at LuiKotale, Democratic Republic of the Congo

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