江滩钉螺在巢湖生存繁殖能力的观察  

Observation on survival and reproduction of Oncomelania snails in the Chaohu Lake

作　　者：操治国[1] 汪天平[1] 张世清[1] 杨卫平[1] 赵峰 张顺社 沙建军 方国仁[1] 朱磊[1] 胡平安[3] 

机构地区：[1]安徽省血吸虫病防治研究所,安徽芜湖241000 [2]安徽省巢湖市居巢区血吸虫病防治站,安徽巢湖238000 [3]安徽省无为县血吸虫病防治站,安徽巢湖238000

出　　处：《中国病原生物学杂志》2008年第11期835-837,共3页Journal of Pathogen Biology

基　　金：安徽省2008年度科技公关计划项目(No.08010302182)。

摘　　要：目的观察钉螺在巢湖生存繁殖情况,为防治工作提供科学依据。方法捕捉安徽省无为县江滩钉螺,采用现场螺笼放养法,对其在巢湖的生存繁殖情况进行观察,为期14个月,同时设立对照区。结果放养后2、4、6、8和14个月,钉螺在巢湖两个实验区和对照区的存活率分别为50.56%-87.76%、54.35%-92.39%和51.76%-95.51%,差异无统计学意义（χ^22个月=3.581,0.769;χ^24个月=5.545,5.389;χ^26个月=1.646,4.394;χ^28个月=2.288,1.445;χ^214个月=0.025,0.118;P均〉0.05）;研究期间,各观察区均有子代钉螺产生,且子一代钉螺生长发育良好,能产生子二代钉螺;螺口数总体呈上升趋势。结论钉螺可在巢湖环境中存活、繁殖。“引江济淮”工程建设期间需采取有效措施,防止钉螺向巢湖扩散。Objective To observe the survival and reproduction of snails in the Chaohu Lake, and provide scientific basis for developing control strategy. Methods The Oncomelania snails, which were collected from Wuwei County, Anhui Province, were raised in the cages on the beaches of the Chaohu Lake and in a control area, and their survival and reproduction capacity was observed for 14 months. Results After 2, 4, 6, 8 and 14 months, the survival rate of the snails in two trail areas in the Chaohu Lake and in the control area was 50.56%-87.76%, 54.35%-92.39% and 51. 76%- 95.51 % respectively. There were no statistical significance between the trial areas and the control area （x^2two months =3. 581, 0.769, P〉0.05; x^2 four months =5. 545, 5.389, P〉0.05;x^2six months=1. 646, 4.394, P〉0.05; x^2eight months=2. 288, 1.445, P 〉0.05; x^2 fourteen months =0. 025, 0. 118, P〉0.05）. Filial generation snails were found in each observation area during the study. The growth and development of the first filial generation snails was normal, and the second filial generation snails were reproduced. The snail population in each observation area showed rising tendency. Conclusion Oncornelania snails can survive and reproduce in the Chaohu Lake, and some measures should be taken to prevent snails spreading into the lake during the construction of the water transfer project from the Yangtze River to the Huaihe River.

关 键 词：江滩钉螺 巢湖 生存 繁殖 

分 类 号：R184.38[医药卫生—流行病学]