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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年龄、性别和季节对前实验室黑猩猩（类人猿）圈养种群血液学参数的影响。

本研究旨在建立一个基线血液学资料，并研究年龄、性别和季节对生活在潮湿热带气候下的圈养黑猩猩（类人猿）血液学参数的影响。血液学参数是评估动物健康状况和诊断疾病的有用工具。我们分析了84只黑猩猩（43只雌性和41只雄性）在年度健康检查期间收集的473份血液样本，这些样本是在麻醉下进行的常规体检。主要发现揭示了一些血液学参数的显著性别差异：男性的红细胞压积和红细胞计数高于女性。与年龄相关的变化也被注意到，与婴儿相比，青少年和成人的淋巴细胞计数较低，但中性粒细胞和单核细胞计数较高。与其他年龄段相比，成年人的血小板计数明显较低。还观察到季节性波动：淋巴细胞计数在雨季较高，而中性粒细胞计数在旱季较高。此外，这群圈养黑猩猩的血液学参数的总体趋势与生活在美国的圈养黑猩猩相似。这些结果应该为动物卫生专业人员，特别是那些研究非人灵长类动物的专业人员提供比较和解释的数据。它们将有助于改进监测和管理圈养非人灵长类动物健康的做法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.