Articles | Volume 10, issue 2
https://doi.org/10.5194/pb-10-13-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/pb-10-13-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Djaffa Mountains guereza (Colobus guereza gallarum) abundance in forests of the Ahmar Mountains, Ethiopia
Department of Zoological Sciences, College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
Department of Biology, Faculty of Natural and Computational Sciences, Woldia University, P.O. Box 400, Woldia, Ethiopia
Afework Bekele
Department of Zoological Sciences, College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
Anagaw Atickem
Department of Zoological Sciences, College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
Dietmar Zinner
Cognitive Ethology Laboratory, German Primate Center (DPZ), Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany
Department of Primate Cognition, Georg August University, 37083 Göttingen, Germany
Leibniz ScienceCampus “Primate Cognition”, 37077 Göttingen, Germany
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Christian Kiffner, John Kioko, Thomas M. Butynski, Yvonne A. de Jong, and Dietmar Zinner
Primate Biol., 9, 33–43, https://doi.org/10.5194/pb-9-33-2022, https://doi.org/10.5194/pb-9-33-2022, 2022
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From November 2011 through to November 2019, we carried out seasonal road transect surveys and estimated population densities of Manyara monkeys and vervet monkeys in Lake Manyara National Park. Both species occurred at relatively high densities, and their population trends remained fairly stable over the study period. Our research highlights the value of long-term monitoring and the importance of Lake Manyara National Park as a stronghold for the endemic and endangered Manyara monkey.
Dietmar Zinner, Sascha Knauf, Idrissa S. Chuma, Thomas M. Butynski, Yvonne A. De Jong, Julius D. Keyyu, Rehema Kaitila, and Christian Roos
Primate Biol., 9, 11–18, https://doi.org/10.5194/pb-9-11-2022, https://doi.org/10.5194/pb-9-11-2022, 2022
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The Manyara monkey was described as a new subspecies of the Cercopithecus mitis species complex in 2020. We sequenced a part of its mitochondrial genome and reconstructed the phylogeny of the mitochondrial lineages. The reconstruction suggests that the Manyara monkey clusters in the youngest of three major C. mitis clades. Our data support the phylogeographic hypothesis of a west-east range expansion of gentle monkeys into eastern and southern Africa.
Dietmar Zinner, Matthias Klapproth, Andrea Schell, Lisa Ohrndorf, Desalegn Chala, Jörg U. Ganzhorn, and Julia Fischer
Primate Biol., 8, 19–35, https://doi.org/10.5194/pb-8-19-2021, https://doi.org/10.5194/pb-8-19-2021, 2021
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Baboons occur in a large range of different habitats. However, data on the ecology of Guinea baboons were scarce. We provide information on the ranging behaviour, habitat use, and diet of a population of Guinea baboons in the Niokolo-Koba National Park, Senegal. Home ranges were about 25 km2, and they moved up to 13 km per day. They seem to prefer the more forested parts of their home range near the river. Fruit dominates their diet, and the nuts of the palmyra palm are a year-round food source.
Dietmar Zinner, Dereje Tesfaye, Nils C. Stenseth, Afework Bekele, Aemro Mekonnen, Steve Doeschner, Anagaw Atickem, and Christian Roos
Primate Biol., 6, 7–16, https://doi.org/10.5194/pb-6-7-2019, https://doi.org/10.5194/pb-6-7-2019, 2019
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Ethiopia is well-known for its high biodiversity and endemism. Among these endemics are two putative subspecies of the guereza: Colobus guereza guereza and C. g. gallarum. Our molecular study supports the two-subspecies hypothesis, making C. g. gallarum an Ethiopian endemic taxon. In combination with its very restricted range, C. g. gallarum is most likely one of the most endangered subspecies of black-and-white colobus.
Holger Sennhenn-Reulen, Langhalima Diedhiou, Matthias Klapproth, and Dietmar Zinner
Primate Biol., 4, 143–151, https://doi.org/10.5194/pb-4-143-2017, https://doi.org/10.5194/pb-4-143-2017, 2017
Filipa M. D. Paciência, Deusdedith Baluya, Pay Mbaryo, Sascha Knauf, and Dietmar Zinner
Primate Biol., 4, 101–106, https://doi.org/10.5194/pb-4-101-2017, https://doi.org/10.5194/pb-4-101-2017, 2017
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Here we report two encounters between olive baboons (Papio anubis) and crowned eagles (Stephanoaetus coronatus), a potential predator, at Lake Manyara National Park, Tanzania. On both events, baboons gave alarm calls while infants got close to adults and juveniles ran to cover. Adult males approached the eagles and chased them away. The baboons’ reactions indeed support the assumption that crowned eagles pose a threat, at least for juvenile baboons.
Related subject area
Conservation
A dataset of new occurrence records of primates from the arc of deforestation, Brazil
Population dynamics of the Manyara monkey (Cercopithecus mitis manyaraensis) and vervet monkey (Chlorocebus pygerythrus) in Lake Manyara National Park, Tanzania
Report on the presence of a group of golden-headed lion tamarins (Leontopithecus chrysomelas), an endangered primate species in a rubber plantation in southern Bahia, Brazil
Rodrigo Costa-Araújo, Gustavo Rodrigues Canale, Fabiano Rodrigues de Melo, Raimundo Rodrigues da Silva, Ivan Batista da Silva, Raony Macedo de Alencar, Luciano Ferreira da Silva, Leandro Jerusalinsky, Renata Bocorny de Azevedo, Eduardo Marques Santos Júnior, Italo Mourthé, Emil José Hernández Ruz, José de Sousa e Silva-Jr., Christian Roos, Izeni Pires Farias, and Tomas Hrbek
Primate Biol., 11, 1–11, https://doi.org/10.5194/pb-11-1-2024, https://doi.org/10.5194/pb-11-1-2024, 2024
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Here we present 192 new records of 22 species and subspecies of primates, collected in 56 different localities during 10 field expeditions across the arc of deforestation between 2015 and 2018. Based on such new records, we extend the ranges of Alouatta puruensis, Ateles chamek, and Saimiri collinsi; identify potential hybridization zones in Alouatta and Ateles species; redefine the range of Plecturocebus moloch; and clarify the ranges of P. baptista and P. hoffmannsi.
Christian Kiffner, John Kioko, Thomas M. Butynski, Yvonne A. de Jong, and Dietmar Zinner
Primate Biol., 9, 33–43, https://doi.org/10.5194/pb-9-33-2022, https://doi.org/10.5194/pb-9-33-2022, 2022
Short summary
Short summary
From November 2011 through to November 2019, we carried out seasonal road transect surveys and estimated population densities of Manyara monkeys and vervet monkeys in Lake Manyara National Park. Both species occurred at relatively high densities, and their population trends remained fairly stable over the study period. Our research highlights the value of long-term monitoring and the importance of Lake Manyara National Park as a stronghold for the endemic and endangered Manyara monkey.
Kristel M. De Vleeschouwer and Leonardo C. Oliveira
Primate Biol., 4, 61–67, https://doi.org/10.5194/pb-4-61-2017, https://doi.org/10.5194/pb-4-61-2017, 2017
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Forest-living primates are particularly vulnerable to the effects of forest fragmentation. The extent to which they can use the agricultural matrix between fragments can be critical for their long-term survival. This paper provides the first record of the use of a rubber plantation by golden-headed lion tamarins, endangered primates inhabiting the Atlantic Forest of south Bahia, Brazil. The results provide opportunities for reconciling economic rubber production with primate conservation.
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Short summary
The Djaffa Mountains guereza (Colobus guereza gallarum) is an endemic Ethiopian taxon. Information about its distribution and population size is missing. We collected data on population density and size in four forests in the Ahmar Mountains in a line-transect survey and estimated 109.6 individuals per square kilometer within the study area. This comparatively high density is thus not the main conservation concern, but the fragmentation of the guereza habitat and population is.
The Djaffa Mountains guereza (Colobus guereza gallarum) is an endemic Ethiopian taxon....