El-Tantawy Azza F, Mashaly Mohamed I, El-Naggar Mohamed M
Zoology Department, Faculty of Sciences, Mansoura University, Mansoura, Egypt.
J Parasit Dis. 2023 Dec;47(4):707-717. doi: 10.1007/s12639-023-01617-3. Epub 2023 Jul 29.
Fish parasitic diseases impose a major economic concern on aquaculture. Identified parasites of include one monogenean, (gills), three digeneans and sp. (intestine), two cestodes and (intestine) and two nematodes and (intestine and stomach). Most nematodes, digeneans and cestodes occurred in all months of the study period. However, and sp. disappeared for 6 and 8 months of the year, respectively. The digenean group was the most dominant followed by the cestode and nematode groups, respectively. The nematodes attained the highest infection rate over the digeneans and cestodes while the monogenean recorded the lowest infection rate. The infection level of examined parasites varied seasonally, but no overall significant pattern was detected. showed a highly significant difference for all parameters seasonally. A higher prevalence was obvious in males than females for most parasites, and the opposite for the mean intensity except for . which was significantly different between females and males in the mean abundance. There were variations in the relationship between the host condition factor and helminth parasite infection levels. . and recorded the highest infection level in class II. The mean prevalence was highly significantly different between host classes for , and
鱼类寄生虫病给水产养殖带来了重大经济问题。已鉴定出的寄生虫包括一种单殖吸虫（鳃）、三种复殖吸虫（和种，肠道）、两种绦虫（和，肠道）以及两种线虫（和，肠道和胃）。在研究期间的所有月份中都发现了大多数线虫、复殖吸虫和绦虫。然而，和种分别在一年中的6个月和8个月消失。复殖吸虫类最为占主导地位，其次分别是绦虫类和线虫类。线虫的感染率高于复殖吸虫和绦虫，而单殖吸虫的感染率最低。所检查寄生虫的感染水平随季节变化，但未检测到总体显著模式。在所有参数上，季节差异都非常显著。大多数寄生虫在雄性中的感染率明显高于雌性，除了，其平均强度相反，而平均丰度在雌性和雄性之间存在显著差异。宿主状况因子与蠕虫寄生虫感染水平之间的关系存在差异。、和在II级中记录到最高感染水平。对于、和，宿主类别之间的平均感染率差异非常显著。
