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目的探讨漳州市辖区漳浦等4县广州管圆线虫中间宿主感染情况。方法在漳浦等4县8个调查点采集中间宿主,用肺检法、匀浆法检查其体内广州管圆线虫幼虫。结果共调查12种贝类1 844份样本,有11种检出广州管圆线虫Ⅲ期幼虫,感染率12.6%(217/1 723);感染率前3位是高突足襞蛞蝓38.9%(61/157)、褐云玛瑙螺28.3%(86/304)和福寿螺19.7%(34/173),其他种类感染率1.2%~6.8%;不同种类宿主感染率差异较大;4县感染率较接近,漳浦12.9%(58/451)、诏安14.0%(58/415)、平和11.6%(52/448)、长泰12.0%(49/409);靠近居民住宅点的感染率为20.2%(171/845),村外调查点为5.2%(46/878),村外点感染率较低。结论广州管圆线虫对中间宿主的选择性不强,中间宿主种类多,但不同孳生环境和不同宿主感染率有明显差异。
Objective To investigate the infection status of intermediate hosts of C. elegans in Zhangpu county, Zhangzhou municipality. Methods The intermediate host was collected from 8 investigation points in 4 counties of Zhangpu county. The larvae of C. elegans were examined by pulmonary examination and homogenate method. Results A total of 1 844 samples from 12 species of shellfish were investigated. Eleven species of stage III larvae were detected, with an infection rate of 12.6% (217/1 723). The top three infection rates were 38.9% 61/157), 28.3% (86/304) and 19.7% (34/173), respectively. The infection rates of other species were 1.2% -6.8%. The infection rates of different types of hosts were quite different. (58/415) in Zhaoan, 11.6% (52/448) in Ping’an, and 12.0% (49/409) in Changtai. The infection rate close to residential areas was 20.2 % (171/845), outside the village survey was 5.2% (46/878), outside the village infection rate is low. Conclusion The C. elegans has less selectivity for the intermediate host and many intermediate hosts, but there are significant differences between different breeding environments and different hosts.