CAJ | 학술논문

目的观察钉螺在长江河口段苏南血吸虫病非流行区的生存、繁殖及感染情况.方法用长江河口段苏南血吸虫病非流行区的泥土及江水,将采自长江上游江滩的当年新螺置实验室内饲养,观察其生存、繁殖及感染情况,并用血吸虫病流行区泥土作对照.结果 6个月和12个月后的钉螺存活率,实验组和对照组差异均无统计学意义(X~2=0.727 8,0.416 1,P均>0.05);春季每只雌螺的平均产卵数为67.69个,95%可信区间为24.026 0～110.097 4;螺卵平均孵化率83.60%,各组间差异无统计学意义(X~2=9.131 8,P>0.05);子代成螺经人工感染60 d后,感染率为1.40%(5/356).结论长江上游江滩钉螺在长江河口段苏南血吸虫病非流行区实验室能够正常生存和繁殖,其子代钉螺能够在实验室感染血吸虫.
목적 관찰정라재장강하구단소남혈흡충병비류행구적생존、번식급감염정황.방법 용장강하구단소남혈흡충병비류행구적니토급강수,장채자장강상유강탄적당년신라치실험실내사양,관찰기생존、번식급감염정황,병용혈흡충병류행구니토작대조.결과 6개월화12개월후적정라존활솔,실험조화대조조차이균무통계학의의(X~2=0.727 8,0.416 1,P균>0.05);춘계매지자라적평균산란수위67.69개,95%가신구간위24.026 0～110.097 4;라란평균부화솔83.60%,각조간차이무통계학의의(X~2=9.131 8,P>0.05);자대성라경인공감염60 d후,감염솔위1.40%(5/356).결론 장강상유강탄정라재장강하구단소남혈흡충병비류행구실험실능구정상생존화번식,기자대정라능구재실험실감염혈흡충.
Objective To observe the survival and reproduction of Oncomelania hupensis snails and their susceptibility to schistosome in schistosomiasis non-endemic area of the Yangtze River estuary in Southern Jiangsu.Methods The soil and water from the Yangtze River estuary of Southern Jiangsu were used for the experiment.The snails reproduced in the same year were collected from the upper reaches of the Yangtze River and raised in the laboratory.The snail survival and reproduction rates and schistosome infection of the snails were observed.The soil collected from schistosomiasis endemic area was used in the control group.Results There was no significant difference between the experimental and control groups for the snail survival rates both in 6 and 12 months (X~2= 0.727 8,P > 0.05 and X~2 = 0.416 1,P > 0.05).Each female snail reproduced 67.69 eggs in average (95 % CI:24.026 0-110.097 4).The average hatchability rate of snail eggs was 83.60%,and there was no significant difference between the 2 groups (X~2= 9.131 8,P > 0.05).The schistosome infection rate of the second generation snails was 1.40% (5/356) 60 days after the infection in the laboratory.Conclusions The snails collected from the upper reaches of the Yangtze River marshland can survival and reproduce in the soil and water from schistosomiasis non-endemic area of the Yangtze River estuary of Southern Jiangsu,and the second generation of the snails can be infected with schistosome in the laboratory.