Hamouda Awatef H, Bazh Eman K A
1Fish Diseases Department, Faculty of Fish and Fisheries Technology, Aswan University, Aswan, Egypt.
2Parasitology Department, Faculty of Veterinary Medicine, Menoufia University, Shibin El Kom, Egypt.
J Parasit Dis. 2019 Mar;43(1):14-21. doi: 10.1007/s12639-018-1031-x. Epub 2018 Oct 30.
Parasitological studies of 100 fish were collected from Lake Nasser, Aswan, Egypt. Out of them 75 were infected with metacercariae in two forms; encysted in most visceral organs and free only in air bladder. These were identified morphologically as minimum metacercariae (Strigeidida: Diplostomidae). The intensity of white grub in was high in the intestine (30 encysted metacercariae/g). The highest prevalence season observed in summer and the lowest in winter. The histopathological examination revealed encysted metacercariae of different sizes within the intestinal musculature accompanied with granular infiltration with eosinophilia. Degenerative changes were observed in liver and kidney cells, as well as congestion of hepatic sinusoids. Spleen showed both lymphoid and melanomacrophages cells depletion.
对从埃及阿斯旺纳赛尔湖采集的100条鱼进行了寄生虫学研究。其中75条感染了两种形态的后尾蚴；大多数内脏器官中有包囊，仅鳔中为游离状态。经形态学鉴定，这些为小型后尾蚴（复殖目：双口科）。肠道中白色幼虫的感染强度较高（30个包囊后尾蚴/克）。观察到夏季的感染率最高，冬季最低。组织病理学检查显示，肠道肌肉组织内有不同大小的包囊后尾蚴，伴有嗜酸性粒细胞的颗粒浸润。肝脏和肾脏细胞出现退行性变化，肝血窦充血。脾脏显示淋巴细胞和黑素巨噬细胞均减少。
