Eastern Chimpanzee (Pan Troglodytes Schweinfurthii) PDF Download

Author:
Publisher: IUCN
ISBN: 2831712467
Category : Africa, Central
Languages : en
Pages : 56

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Author: Pierre Huyghe
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Fragmentation, degradation and the loss of habitat are, among others, important drivers of human-induced biodiversity loss. Since half of the biodiversity can be found in tropical rainforests it is clear that the key to maintaining this biodiversity is the conservation of forests (Slingenberg et al. 2009). Primates are also severely affected by these threats since 90% of the primate species depend on forests for there survival (Mittermeier and Cheney 1987). This is also the case for the chimpanzee populations living in the DR Congo. The aim of this thesis is to characterise an unstudied population of chimpanzees living in three neighbouring forest fragments on the Lendu Plateau near Lake Albert. In recent decades the fragmentation in the area intensified. In 1985 the area consisted of a larger and small forest fragment. Nowadays the larger forest fragment is split up into two smaller fragments. In this study the tree composition of the forest was analysed. With Shannon indices (H) between 2.49 and 2.98, for the three fragments, the study area can be considered as moderately divers when considering tree species. Although the forest fragments are quite small the density of chimpanzees is quite high compared to other African forests. The density was estimated to be around 3.8 individuals per km2. This study found that night nests were more often found further away from human settlements and on higher altitudes. The data available for this thesis suggests that food trees are more likely to be used as nesting trees. In literature there is still a lot of debate and some articles suggest that other factors such as physical tree characteristics are more important for the selection of nesting trees (Stanford and OMalley 2008). This study shows that small forests can harbour threatened species and thus could be of importance for conservation.

Author: Tony Lawrence Goldberg
Publisher:
ISBN:
Category : Chimpanzees
Languages : en
Pages : 538

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Author: Deborah L. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 304

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Socioecological models derive from the field of behavioral ecology, wherein social strategies are seen as adaptive responses to evolutionary and environmental forces. Chimpanzee social structure is largely explained by their dietary preference, however, little is known of chimpanzee adaptations to savanna-woodland environments. This dissertation tests the explanatory power of socioecological models on a chimpanzee population occupying the savanna-woodlands of Ugalla, Tanzania. By conducting a genetic survey across 624 km 2 , the following predictions are tested: (1) chimpanzees will occur at lower population densities than at forested sites, reflective of more diffusely distributed resources; (2) lower population densities, resulting in theoretically indefensible larger home ranges, will decrease benefits gained from male philopatry, resulting in a more continuous distribution of Y-chromosome haplotypes than is characteristic of populations studied in forested environments; and (3) genetic diversity will be lower, compared to other eastern chimpanzee populations, due to potential isolation. The population density of Ugalla is 0.25 (CI 0.16-0.38) individuals/km 2 , which is ten times less than the lowest forested site density. The Ugalla males appear to remain in their natal community, as geographic clusters of rare Y-chromosome haplotypes were found, suggesting the maintenance of male-philopatric communities. Relative genetic diversity of the Y-chromosome was exceptionally low among the males, and autosomal diversity was comparable to other eastern chimpanzee populations. These results indicate that although chimpanzees in Ugalla occur at much lower densities in response to a savanna-woodland habitat, male philopatry is maintained, suggesting this social structure is a highly conservative adaptation, and one which may have been shared with our earliest ancestors as they shifted to a similar environment.

Author: William C. McGrew
Publisher: Cambridge University Press
ISBN: 9780521555364
Category : Psychology
Languages : en
Pages : 354

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The great apes (chimpanzees, bonobos, gorillas and orangutans) are our closest living relatives, sharing a common ancestor only five million years ago. We also share key features such as high intelligence, omnivorous diets, prolonged child-rearing and rich social lives. The great apes show a surprising diversity of adaptations, particularly in social life, ranging from the solitary life of orangutans, through patriarchy in gorillas to complex but different social organisations in bonobos and chimpanzees. As great apes are so close to humans, comparisons yield essential knowledge for modelling human evolutionary origins. Great Ape Societies provides comprehensive up-to-date syntheses of work on all four species, drawing on decades of international field work, zoo and laboratory studies. It will be essential reading for students and researchers in primatology, anthropology, psychology and human evolution.

Author: Christophe Boesch
Publisher: Cambridge University Press
ISBN: 1108481558
Category : Science
Languages : en
Pages : 489

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An engaging account of the research and key findings on Taï chimpanzees to celebrate the 40th anniversary of this project.

Author: Randall L. Susman
Publisher: Springer Science & Business Media
ISBN: 1475700822
Category : Science
Languages : en
Pages : 452

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Historical Remarks Bearing on the Discovery of Pan paniscus Whether by accident or by design, it was most fortunate that Robert M. Yerkes, the dean of American primatologists, should have been the first scientist to describe the characteristics of a pygmy chimpanzee, which he acquired in August 1923, when he purchased him and a young female companion from a dealer in New York. The chimpanzees came from somewhere in the eastern region of the Belgian Congo and Yerkes esti mated the male's age at about 4 years. He called this young male Prince Chim (and named his female, com mon chimpanzee counterpart Panzee) (Fig. I). In his popular book, Almost Human, Yerkes (1925) states that in all his experiences as a student of animal behavior, "I have never met an animal the equal of this young chimp . . . in approach to physical perfection, alertness, adaptability, and agreeableness of disposition" (Yerkes, 1925, p. 244). Moreover, It would not be easy to find two infants more markedly different in bodily traits, temperament, intelligence, vocalization and their varied expressions in action, than Chim and Panzee. Here are just a few points of contrast. His eyes were black and in his dark face lacked contrast and seemed beady, cold, expressionless. Hers were brown, soft, and full of emotional value, chiefly because of their color and the contrast with her light complexion.

Author: Rebecca Kormos
Publisher: World Conservation Union
ISBN:
Category : Nature
Languages : en
Pages : 238

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Wild chimpanzees are only found in tropical Africa, where their populations have declined by more than 66% in the last 30 years. This Action Plan focuses on one of the four chimpanzee subspecies, the western chimpanzee, which is one of the two subspecies most threatened with extinction. This publication presents a plan for action that represents a consensus among all parties concerned with the conservation of chimpanzees.

Author: C. Giuliano
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Christophe Boesch
Publisher:
ISBN: 9780198505075
Category : Nature
Languages : en
Pages : 336

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The chimpanzees are the closest living evolutionary relatives to our own species, Homo sapiens. As such, they have long exerted a fascination over those with an interest in human evolution, and what makes humans unique. Chrisophe Boesch and Hedwige Boesch-Acherman undertook an incredible observational study of a group of wild chimpanzees of the Tai forest in Cote D'Ivoire, spending some fifteen years in the West African jungle with them. This fascinating book is the result of these years of painstaking research among the chimps. Chimpanzee behavior is documented here in all its impressive diversity and variety. Aggression, territoriality, social structure and relationships, reproductive strategies, hunting, tool use - each of these is given its own chapter, along with topics such as chimp intelligence, life histories, and demography. The authors take care to place their observations within the broader context of research in behavioral ecology, and to compare and contrast their findings with other important work on chimpanzee groups, such as that by Jane Goodall. The book concludes with a summary chapter relating the chimpanzee findings to our understanding of human evolution. Combining careful scientific observation with a store of entertaining anecdotes, this is a lively and readable book. It also succeeds in shedding light on some of the central questions around the evolutionary relationships between the primates, and in particular the affinity between chimpanzees and humans. 'This is a major contribution to the study of the great apes, and a significant addition to debates about human/ape evolution. It has all the makings of a classic monograph.