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调查白斑狗鱼眼内寄生的复口吸虫的流行病学,为白斑狗鱼养殖过程中的疾病防治提供基础性资料。2009年至2014年在中国境内的额尔齐斯河8次采样获得263尾白斑狗鱼,统计分析复口吸虫在白斑狗鱼各体长组中的频率分布及空间分布特点。结果表明:复口吸虫一年四季均可感染白斑狗鱼,感染率从春季到冬季逐渐升高,冬季达到峰值;平均感染强度则在冬季最高,夏季次之,春秋两季均低;总感染率为34.98%,平均感染强度为10.74只/尾;感染率随宿主体长增加而上升,但是在体长>50 cm时,感染率最低,为4.17%;平均感染强度随宿主体长的增加也呈逐渐上升的趋势;方均比在各体长段均大于1,呈聚集分布,且聚集度随鱼体长增加而增加。
To investigate the epidemiology of coracoidea parasites in the octopus fishes and to provide basic information for the prevention and treatment of the disease during the cultivation of the lupid fish. A total of 263 leukocytes were obtained from eight samples of the Irtysh River in China from 2009 to 2014. The frequency distribution and spatial distribution of the polygamous fish in the long group of Pisces were statistically analyzed. The results showed that the infection of P. gondii could be infected throughout the year and the infection rate increased gradually from spring to winter and peaked in winter. The average infection intensity was the highest in winter, followed by summer and low in spring and autumn. The total infection The infection rate was 34.98% and the average infection intensity was 10.74 / tail. The infection rate increased with the increase of host body length, but the lowest infection rate was 4.17% when the body length was> 50 cm. The average infection intensity increased with the host body length Also showed a gradual upward trend; the square average ratio in each body long segment were greater than 1, were aggregated distribution, and the degree of aggregation increases with the length of the fish increased.