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首页> 外文期刊>Journal of Natural Sciences Research >A Study of Diplostomum Parasites Affecting Oreochromis niloticus in Chepkoilel Fish Farm and Two Dams in Eldoret-Kenya
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A Study of Diplostomum Parasites Affecting Oreochromis niloticus in Chepkoilel Fish Farm and Two Dams in Eldoret-Kenya

机译：Chepkoilel养鱼场和Eldoret-Kenya的两个水坝中影响尼罗罗非鱼的Diplostomum寄生虫的研究

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The Diplostomum parasite completes its life-cycle in fish eating birds, but spends considerable time in the eye vitreous humor of many fresh water fishes. Its infection in fish causes severe ocular pathology, and leads to increased susceptibility to predation. A study on Diplostomum parasites was conducted at Chepkoilel University with an objective of assessing its parasitic indices and effects on O. niloticus. A total of 40 fish were collected from the fish farm and 155 from the dams between November 2010 and January, 2011. Fish were weighed and length measured to ascertain their condition factor. The fish were observed for the Diplostomum parasite to ascertain parasitic indices in the different habitats. The parasite abundance was related to fish size and condition factor to determine parasite’s effect on O. niloticus. Fish were found to have a parasitic prevalence (%) of 100, 84 and 66 in Kerita dam, Kesses dam and Chepkoilel fish farm. Parasite mean intensity was 12, 9 and 14 respectively.The wellbeing of the fish was not compromised by the parasites, as was seen in the correlation between condition factor and parasite abundance. There was a Pearson correlation of P = 0.357, 0.516 and 0.565 in Kerita dam, Kesses dam and Chepkoilel fish farm respectively. The dams and the fish farm did not pose significant difference in the parasitic indices, probably due to their proximity. There was seen equal abundance in both fish sexes, implying no sex preference in infection. Keywords: Diplostomum, Oreochromis niloticus, prevalence, Abundance, Mean intensity, Condition factor.
机译：Diplostomum寄生虫在吃鱼的鸟类中完成了其生命周期，但在许多淡水鱼类的眼玻璃体液中花费了大量时间。其在鱼类中的感​​染会导致严重的眼部病理，并导致更容易受到掠食。在Chepkoilel大学进行了Diplostomum寄生虫的研究，目的是评估其寄生指数及其对尼罗罗非鱼的影响。在2010年11月至2011年1月之间，总共从养鱼场收集了40条鱼，从大坝中收集了155条鱼。称重并测量鱼的长度，以确定其状况因素。观察鱼是否有梁龙寄生虫，以确定不同生境中的寄生指数。寄生虫的丰度与鱼的大小和条件因子有关，以确定寄生虫对尼罗罗非鱼的影响。在Kerita大坝，Kesses大坝和Chepkoilel养鱼场中，发现鱼类的寄生虫患病率（％）为100、84和66。寄生虫的平均强度分别为12、9和14。如条件因子和寄生虫丰度之间的相关性所示，寄生虫不会损害鱼类的健康。 Kerita大坝，Kesses大坝和Chepkoilel鱼场的Pearson相关系数分别为P = 0.357、0.516和0.565。水坝和养鱼场的寄生指数没有显着差异，可能是由于它们的接近性。两种鱼类的丰度均相等，这表明在感染中没有性别偏爱。关键字：梁龙，尼罗罗非鱼，患病率，丰度，平均强度，条件因子。

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