PDF(Pubmed)
Abstract：
Three stations along the Ase River, Delta State Nigeria provided water and 85 fish samples which were analyzed. The fish were measured and examined for endoparasites according to established protocol. All water quality parameters investigated were within the WHO-acceptable values for surface waters. Station variation of physicochemical parameters was not statistically significant (p > 0.05). Fish body conformation indices positively correlated with the prevalence of parasites in Clarias gariepinus, Heterobranchus longifilis, Parachana africana, Chromidotilapia guntheri guntherii, and Denticeps clupeodes. The overall parasite prevalence of 63.53% was established with the most abundant parasite being Trichodina mutabillis. The parasites had a predilection for the gastrointestinal tract with a high occurrence of 307 individuals. Stations 1, 2, and 3 had 326, 213, and 259 parasites, respectively, out of a total of 798 parasites detected. P. laevis was absent in station 1. All parasites were found in stations 2 and 3. Statistically, there was a significant difference (p < 0.05) in the prevalence in all stations. The correlation index of T. mutabillis and R. congolensis in stations 1 and 3 was positively strong (p < 0.05) with the concentrations of water quality. However, water conditions in stations 1 and 3 had a deleterious impact on P. laevis. T. mutabillis maintained a high positive correlation with physicochemical water quality in all three stations. Shannon-Weiner\'s index in station 3 (H = 1.337) shows that the parasites were more diverse. PCA and biodiversity indices have enabled us to comprehend how parasite-host-environment systems interact.
摘要：
沿着Ase河的三个站，尼日利亚三角洲州提供了水和85个鱼类样本，并对其进行了分析。根据已建立的方案测量和检查鱼的体内寄生虫。所调查的所有水质参数均在WHO可接受的地表水范围内。各站理化参数变异无统计学意义(p>0.05)。鱼体构象指数与克拉丽亚的寄生虫患病率呈正相关，杂种龙吉菲利斯，ParachanaAfricana,甘特利.甘特利.和Denticeps俱乐部。寄生虫的总体患病率为63.53％，其中最丰富的寄生虫是Trichodinamutabillis。寄生虫对胃肠道有好感，有307人的高发生率。1、2和3站有326、213和259个寄生虫，分别,总共检测到798种寄生虫。P.laevis不在第1站。在第2站和第3站发现了所有寄生虫。统计上,所有站点的患病率均存在显着差异（p<0.05）。1站和3站的T.mutabillis和R.congolensis的相关性指数与水质浓度呈正相关（p<0.05）。然而,1站和3站的水状况对P.laevis产生了有害影响。T.mutabillis与所有三个站的物理化学水质保持高度正相关。第3站的Shannon-Weiner指数（H=1.337）表明寄生虫更加多样化。PCA和生物多样性指数使我们能够理解寄生虫-宿主-环境系统如何相互作用。
