The Influence of Age, Sex, and Season on Hematological Parameters in a Captive Population of Former Laboratory Chimpanzees (Pan troglodytes)

IF 2 3区生物学 Q1 ZOOLOGY

American Journal of Primatology Pub Date : 2024-12-08 DOI:10.1002/ajp.23703

Barthélémy Ngoubangoye, Serge-Ely Dibakou, Désiré Otsaghe Ekore, Thierry Audrey Gaël Tsoumbou, Ivan Cyr Moussadji Kinga, Freddy Yanagha, Linaa Yasmine Okomo Nguema, Larson Boudenga, Dominique Pontier

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Abstract

This study aimed to establish a baseline hematological profile and examine the influence of age, sex, and season on hematological parameters in captive chimpanzees (Pan troglodytes) living in a humid tropical climate. Hematological parameters are a useful tool for assessing health status and diagnosing diseases in animals. We analyzed 473 blood samples collected from 84 chimpanzees (43 females and 41 males) during annual health checks, conducted under anesthesia for a routine physical examination. The main findings revealed significant sex differences in some hematological parameters: males had higher hematocrit and red blood cell counts than females. Age-related variations have also been noted, with adolescents and adults having lower lymphocyte counts but higher neutrophil and monocyte counts than infants. Adults, in particular, had significantly lower platelet counts compared to other age classes. Seasonal fluctuations were also observed: lymphocyte counts were higher in the rainy season, while neutrophil counts were higher in the dry season. In addition, the general trends in hematological parameters for this captive population of chimpanzees were similar to those reported in captive chimpanzees living in the United States. These results should provide animal health professionals, particularly those working with nonhuman primates, with data to compare and interpret. They will help improve practices for monitoring and managing the health of nonhuman primates in captivity.

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来源期刊

American Journal of Primatology 生物-动物学

CiteScore

4.50

自引率

8.30%

发文量

103

审稿时长

4-8 weeks

期刊介绍： The objective of the American Journal of Primatology is to provide a forum for the exchange of ideas and findings among primatologists and to convey our increasing understanding of this order of animals to specialists and interested readers alike. Primatology is an unusual science in that its practitioners work in a wide variety of departments and institutions, live in countries throughout the world, and carry out a vast range of research procedures. Whether we are anthropologists, psychologists, biologists, or medical researchers, whether we live in Japan, Kenya, Brazil, or the United States, whether we conduct naturalistic observations in the field or experiments in the lab, we are united in our goal of better understanding primates. Our studies of nonhuman primates are of interest to scientists in many other disciplines ranging from entomology to sociology.