摘要
目的探讨在南水北调和全球气候变暖条件下,山东受水区钉螺生存繁殖的现状。方法 2004年10月起在调水途经的微山湖区独山岛采用螺笼放养钉螺、和半定量观察法观察钉螺生存繁殖情况。结果至2011年钉螺已经在微山湖区生存繁殖7年,2005年9月1螺笼经淘洗后共收获子1代活螺671只,2006年10月收获子2代活螺823只,2007年10月收获子3代活螺337只,2008年10月收获子4代活螺401只,2009年10月收获子5代活螺158只,2010年10月收获子6代活螺203只;至2011年10月,经过7个冬季(84个月)的放养,当年收获子7代活螺1 017只,与越冬亲代螺比较,活钉螺数量增长了9.7倍。结论微山湖区的钉螺能够生存7年以上,是迄今我国向北方迁移钉螺能较长期生存繁殖地理分布最北点(北纬35°15′);南水北调长江取水口附近的钉螺迁徙至微山湖区后仍保持较长时期的种群生存繁殖能力,但非完全适宜;南水北调东线工程竣工输水后,山东微山湖区存在着血吸虫病流行的危险因素,应将微山湖区作为血吸虫病潜在流行区给予管理。
Objective To explore the effect of survival and reproduction of Oncomelania hupensis （Gredier） on the prev-alence of schistosomiasis in the area of the South-to-North Water Transfer Project amidst global warming in Shandong Province. Methods Starting in October 2004, survival and reproduction of O. hupensis （Gredier） in containers on Dus-han Island in the Weishan area of Shandong Province was observed. O. hupensis （Gredier） survival and reproduction was determined semi-quantitatively. Results O. hupensis （Gredier） had been surviving and reproducing in the Weishan Lake area for 7 years until a container was collected in September 2005. After washing, 671 live 1st generation O. hupen- sis （Gredier） were collected. In October 2006, 823 live 2nd generation O. hupensis （Gredier） were collected. In October 2007, 337 live 3rd generation O. hupensis （Gredier） were collected. In October 2008, 401 live 4th generation O. hupensis （Gredier） were collected. In October 2009, 158 live 5th generation O. hupensis （Gredier） were collected. In October 2010, 203 live 6th generation O. hupensis （Gredier） were collected. After 7 winters （84 months）, 1,017 live ？th genera-tion O. hupensis （Gredier） were collected in October 2011. Compared to the parent population, live O. hupensis （Gredi-er） increased 9.7-fold. Conclusion In the Weishan Lake area, O. hupensis （Gredier） has survived for more than 7 years. This area is the northernmost point （North latitude 35015/） of the geographic distribution of O. hupensis （Gredi-er） where it has survived for a prolonged period as it migrates north. O. hupensis （Gredier） near the water intake of the Yangtze River in the area of the South-to-North Water Transfer Project has retained its ability to survive and reproduce~ after migrating to Weishan Lake, although conditions are not ideal. When water is diverted after completion of the East-ern Route of the South-to-North Water Transfer Project, the Weishan Lake area of Shandong Provin
出处
《中国病原生物学杂志》
CSCD
北大核心
2013年第2期151-154,共4页
Journal of Pathogen Biology
基金
山东省医药卫生科研项目(No.2003-9)
关键词
南水北调东线工程
微山湖区
钉螺
血吸虫病
危险因素
Eastern Route of the South-to North Water Transfer Project
Weishan Lake area
Oncomelania huDensis（Gredier）
schistosomiasis
risk factors
