Gillespie Thomas R, Greiner Ellis C, Chapman Colin A
Department of Zoology, University of Florida, Gainesville, Florida 32611-8525, USA.
J Parasitol. 2004 Dec;90(6):1356-60. doi: 10.1645/GE-311R.
From January 1998 to December 2002, we collected 293 fecal samples from free-ranging individuals of the 4 guenon species of western Uganda, i.e., redtail guenons (Cercopithecus ascanius), blue monkeys (Cercopithecus mitis), l'hoesti monkeys (Cercopithecus lhoesti), and vervet monkeys (Cercopithecus aethiops), to quantify the prevalence of gastrointestinal parasites. Helminth eggs, larvae, and protozoan cysts were isolated by sodium nitrate flotation and fecal sedimentation. Helminth parasites were identified, and infection prevalence was determined for all 4 guenon species. Coprocultures facilitated identification of strongylate nematodes. For the most common species, the redtail guenon, we documented prevalence of protozoan parasites and examined the effect of season and host sex on infection prevalence. Six nematodes (Strongyloidesfulleborni, Oesophagostomum sp., unidentified strongyle, Trichuris sp., Streptopharagus sp., and Enterobius sp.), 1 cestode (Bertiella sp.), 1 trematode (Dicrocoeliidae), and 5 protozoans (Entamoeba coli, Entamoeba histolytica, lodameoba butschlii, Giardia lamblia, and Chilomastix mesnili) were detected. Seasonal patterns of infection were not readily apparent for any parasite species infecting redtail guenons. Although prevalence never differed between male and female guenons, only adult females were infected with Oesophagostomum sp. and S. fulleborni.
1998年1月至2002年12月，我们从乌干达西部4种长尾猴的野生个体中收集了293份粪便样本，即赤尾长尾猴（Cercopithecus ascanius）、蓝猴（Cercopithecus mitis）、洛氏长尾猴（Cercopithecus lhoesti）和绿猴（Cercopithecus aethiops），以量化胃肠道寄生虫的感染率。通过硝酸钠浮选法和粪便沉淀法分离出蠕虫卵、幼虫和原生动物囊肿。鉴定出蠕虫寄生虫，并确定了所有4种长尾猴的感染率。粪便培养有助于鉴定圆线虫。对于最常见的物种赤尾长尾猴，我们记录了原生动物寄生虫的感染率，并研究了季节和宿主性别对感染率的影响。检测到6种线虫（富氏类圆线虫、食道口线虫属、未鉴定的圆线虫、鞭虫属、链尾线虫属和蛲虫属）、1种绦虫（伯特绦虫属）、1种吸虫（双腔科）和5种原生动物（结肠内阿米巴、溶组织内阿米巴、布氏嗜碘阿米巴、蓝氏贾第鞭毛虫和梅氏唇鞭毛虫）。感染的季节性模式在感染赤尾长尾猴的任何寄生虫物种中都不明显。虽然雄性和雌性长尾猴的感染率没有差异，但只有成年雌性感染了食道口线虫属和富氏类圆线虫。
