Abstract：
A comparative study on the relationship between condition factors and parasite density of Heterobranchus isopterus and Clarias gariepinus was conducted during the wet and dry seasons. Specimens were collected from the Bagoué River from August 2020 to July 2021. Two hundred eighty-four specimens of H. isopterus and 272 specimens of C. gariepinus were collected from all stations during both seasons. The standard length and weight of the fish were recorded and the condition factor was calculated for each individual. The gills were examined under a binocular loupe and the monogeneans were collected. Parasite counts showed that for both host species, the total number of parasites was higher in the dry season than in the wet season (p < 0.05). The correlation coefficient was determined to investigate the relationship between the condition factor and the total number of parasites. A significant positive correlation was observed between the condition factor and the number of parasites in both host species during the wet season. A negative correlation was observed in both hosts during the dry season. The information from this study could be taken into consideration in the sanitary management of the fish farming industry. The dry season could be considered as the season with favorable conditions for the development of most parasite species.
摘要：
对雨季和旱季的条件因子与异花杂种和异花杂种的寄生虫密度之间的关系进行了比较研究。从2020年8月至2021年7月从Bagoué河收集了样本。在两个季节中，从所有站点收集了88个H.isopterus标本和272个C.gariepinus标本。记录鱼的标准长度和重量，并计算每个个体的条件因子。在双目放大镜下检查the，并收集单基因。寄生虫计数表明，对于两个寄主物种，旱季寄生虫总数高于雨季(p<0.05)。确定相关系数以研究条件因子与寄生虫总数之间的关系。在雨季，条件因子与两种寄主物种的寄生虫数量之间均呈显着正相关。在旱季，两个寄主均呈负相关。在养鱼业的卫生管理中可以考虑这项研究的信息。旱季可以被认为是大多数寄生虫物种发育的有利条件季节。
