Purpose

Parasite infections may lead to mortalities in fish; therefore, destabilizing the biodiversity and ecosystem functions. Swamps such as the Lorwai Swamp are important water sources, and information on the parasite species infecting Oreochromis nilotocus baringoensis in the hot springs of Lorwai Swamp which have a distinct genetic makeup from their counterparts in Lake Baringo is lacking. The purpose of this study was to provide a knowledge base on the parasite species infecting O. niloticus baringoensis in these springs, facilitate their comparison with those in Lake Baringo and determine their relationship with selected water quality parameters.

Methods

347 fish were collected and standard parasitological procedures were used to examine the presence of parasites. Physico-chemical parameters were measured in situ and water samples were collected for chlorophyll-a determination and nutrient analyses in the laboratory using standard methods. Relationship between parasitic infections and selected water quality parameters was determined by PCA using SPSS version 22.

Results

Two parasite species were common in all sites: Cichlidogyrus sclerosus and Clinostomum sp. Some parasites correlated positively with some parameters; Amirthalingamia macracantha and Contracaecum sp. with nitrogen compounds. Others like Clinostomum sp. and Tylodelphys sp. correlated negatively with dissolved oxygen.

Conclusion

Results from this study showed that there were both positive and negative relationships between some water quality parameters and the prevalence of recovered parasites. O. niloticus baringoensis from Lake Baringo also recorded high parasite prevalence and this calls for sensitization of the public on the risks that may arise from the consumption of undercooked infected fish.

中文翻译：

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与肯尼亚Lorwai沼泽和Baringo湖的泉水中所选水质参数有关的Oreochromis niloticus baringoensis寄生虫群落（Trewavas，1983年）。

目的

寄生虫感染可能导致鱼类死亡。因此，破坏了生物多样性和生态系统功能。洛威沼泽等沼泽是重要的水源，缺乏有关洛威沼泽温泉中感染巴氏o鱼的寄生虫物种的信息，这些信息与巴林戈湖的同类动物具有明显的遗传组成。这项研究的目的是提供一个知识基础，以了解这些春季中感染巴林哥犬的寄生虫，与巴林哥湖进行比较，并确定它们与选定水质参数的关系。

方法

收集了347条鱼，并使用标准的寄生虫学程序检查了寄生虫的存在。物理-化学参数，原位和水样品中测量被收集用于受叶绿素一个使用标准方法在实验室中确定和营养分析。PCA使用SPSS 22版确定了寄生虫感染与所选水质参数之间的关系。

结果

在所有场所中共有两种寄生虫物种：Cichlidogyrus sclerosus和Clinostomum sp。一些寄生虫与某些参数呈正相关。Amirthalingamia macracantha和Contracaecum sp。与氮化合物。其他如Clinostomum sp。和Tylodelphys sp。与溶解氧呈负相关。

结论

这项研究的结果表明，某些水质参数与所回收的寄生虫的患病率之间存在正相关和负相关。来自Baringo湖的Baringoensis O. niloticus也有很高的寄生虫流行率，这要求公众对食用未煮熟的受感染鱼可能引起的风险提高认识。