Ultrastructure of Lingual Papillae in Common Chimpanzee (Pan troglodytes ) Foetus, Newborn and Adult Specimens

2017 ◽  
Vol 46 (5) ◽  
pp. 431-438 ◽  
Author(s):  
J. F. Pastor ◽  
M. Barbosa ◽  
F. J. De Paz ◽  
I. San José ◽  
M. Levanti ◽  
...  
Keyword(s):  
Pan Troglodytes ◽  
Lingual Papillae ◽  
Common Chimpanzee

scholarly journals Spatial Modelling of Common Chimpanzees’ (Pan troglodytes schweinifurthii) Ecological Niche in the Western Part of Rwanda

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
J Tuyishimire ◽  
P Nsengiyumva ◽  
G Rwanyiziri ◽  
M Mugabowindekwe
Keyword(s):  
Pan Troglodytes ◽  
National Park ◽  
Ecological Niche ◽  
Spatial Modelling ◽  
Distribution Data ◽  
Location Data ◽  
Western Province ◽  
High Precipitation ◽  
Forest Parks ◽  
Common Chimpanzee

The Western Part of Rwanda is a mountainous region that hosts two important forest parks namely the Nyungwe National Park (NNP) and Gishwati-Mukura National Park (GMNP). The two parks which are located in the Albertine Rift region are known for their high endemism and harbour several endangered plant and animal species, including particularly the Common Chimpanzees (Pan troglodytes schweinifurthii). However, these forests are facing threats including mainly habitat loss, aggravated by climate change both of which are continuously having direct and indirect effects to the Chimpanzees. While conservation of chimpanzees appears critical, there is a need to deeply understand the dynamics of their habitat. This study aimed at modelling the ecological niche of common chimpanzee by integrating species distribution data and environmental layers. Species location data collected in both NNP and GMNP were integrated with environmental variables (temperature, precipitation, altitude, and land cover) through Maximum Entropy (MaxEnt), and Generic Algorithm for Rule-based Prediction (GARP) Models. The results of both models showed that chimpanzees prefer the Southern and the Northern parts of the study area (0.5 < p < 0.87), which is characterised by high altitude, low temperature, and intensive rainfall. It was also noted that MaxEnt predictions were more accurate compared to the GARP’s. MaxEnt predictions showed that 35% (2058.61 ha) of the Western Province are suitable for chimpanzees, while GARP predicted that only 24% (1411.62 ha) are suitable. Furthermore, the study found that the high precipitation, annual and maximum precipitations, and food availability are the most determinants of chimpanzees' habitat. The land use in the Western Province has made the central part less suitable to chimpanzees and therefore, this study recommends that special efforts for the conservation of Common chimpanzees in Rwanda should be concentrated in the Southern Part (around NNP) Nyungwe National Park (main forest and Cyamudongo fragment) and the northern Part (around GMNP) Keywords: Spatial Modelling, Common Chimpanzee, Ecological Niche, Nyungwe National Park, Gishwati-Mukura National Park, Rwanda.

scholarly journals ERG Measurements of the Spectral Sensitivity of Common Chimpanzee (Pan troglodytes)

1996 ◽  
Vol 36 (16) ◽  
pp. 2587-2594 ◽  
Author(s):  
GERALD H JACOBS ◽  
JESS F DEEGAN ◽  
JENNIFER L MORAN
Keyword(s):  
Spectral Sensitivity ◽  
Pan Troglodytes ◽  
Common Chimpanzee

A histological reconstruction of dental development in the common chimpanzee,Pan troglodytes

1998 ◽  
Vol 35 (4-5) ◽  
pp. 427-448 ◽  
Author(s):  
Donald J Reid ◽  
Gary T Schwartz ◽  
Christopher Dean ◽  
Malkanthi S.S Chandrasekera
Keyword(s):  
Pan Troglodytes ◽  
Dental Development ◽  
The Common ◽  
Common Chimpanzee

Linkage of Patr-AL to Patr-A and- B in the major histocompatibility complex of the common chimpanzee ( Pan troglodytes )

2002 ◽  
Vol 54 (3) ◽  
pp. 212-215 ◽  
Author(s):  
Ron Geller ◽  
Erin Adams ◽  
Lisbeth Guethlein ◽  
Ann-Margaret Little ◽  
Alejandro Madrigal ◽  
...  
Keyword(s):  
Major Histocompatibility Complex ◽  
Pan Troglodytes ◽  
Major Histocompatibility ◽  
Histocompatibility Complex ◽  
The Common ◽  
Common Chimpanzee

scholarly journals TT viruses (TTV) of non-human primates and their relationship to the human TTV genotypes

1999 ◽  
Vol 80 (9) ◽  
pp. 2491-2499 ◽  
Author(s):  
Ernst J. Verschoor ◽  
Susan Langenhuijzen ◽  
Jonathan L. Heeney
Keyword(s):  
Pan Troglodytes ◽  
Primate Species ◽  
Pan Troglodytes Schweinfurthii ◽  
Pan Troglodytes Verus ◽  
Tt Virus ◽  
High Incidence ◽  
The Common ◽  
Common Chimpanzee ◽  
Very High ◽  
Human Primate

Sera from eight different non-human primate species, in total 216 samples, were analysed for the presence of TT virus (TTV) sequences. A very high incidence of TTV infection was found in sera from both common chimpanzees and pygmy chimpanzees, 48·8% and 66·7%, respectively. Sequence analysis of PCR fragments from two pygmy chimpanzees and seven common chimpanzees resulted in a total of 14 different TTV sequences. Phylogenetic analysis, including human TTV of all known genotypes, revealed that: (i) TTV from pygmy chimpanzees are closely related to viruses from human genotypes 2 and 3; (ii) TTV sequences obtained from common chimpanzees cluster together with human TTV genotypes 5 and 6, the latter only at the protein level; (iii) TTV from the common chimpanzee subspecies Pan troglodytes verus and Pan troglodytes schweinfurthii cluster together, suggesting an ancient host–pathogen relationship before subspeciation 1·6 million years ago; and (iv) TTV of common and pygmy chimpanzees may have been acquired by these animals in different zoonotic events not longer than 2·5 million years ago.

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