鄱阳湖草洲湿地成片微型螺的发现  

Plenty of Miniature Oncomelanias are Found in Poyang Lake Marshland

作　　者：王小红[1,2,3] 涂祖新[2,4] 王松[5] 

机构地区：[1]江西省科学院科技战略研究所,南昌330096 [2]江西省鄱阳湖重点实验室,南昌330096 [3]江西省科技发展战略软科学研究基地,南昌330096 [4]江西省科学院微生物研究所,南昌330096 [5]江西省科学院生物资源研究所,南昌330096

出　　处：《江西科学》2016年第4期397-399,408,共4页Jiangxi Science

基　　金：国家科技支撑计划项目(2009BAI78B01);江西省科技重大专项(20114ABG01100);江西省自然科学基金项目(20122BAB205046);江西省科学院"省部共建鄱阳湖国家重点实验室培育基地"计划(赣科院字[2013]19号-9)

摘　　要：报导了2012年春季在鄱阳湖星子县梅溪湖草洲湿地发现成片的微型螺,一龄螺壳高在5 mm以下的占总螺数的41.5%,壳高在6 mm以下的占总螺数的75.5%。试验证明,在产卵旺季,壳高5 mm下者均无产卵力,壳高在5 mm以上者,产卵力亦显著下降。调查结果分析认为成片微型螺的成因与鄱阳湖2011年水位变化有很大的关系,湖水退水过早、气候长期干旱及特殊的、局部的地理环境有关,鄱阳湖水情变化是钉螺消长的关键因素。This article reports that plenty of miniature Oncomelanias are found in Poyang Lake,Xngzi county,Meixi Lake marshland in the spring of 2012. Shells lower than 5 mm high account for 41. 5%of the total screws while those under 6 mm account for 75. 5%. The experiment proved that during the spawning season,shells lower than 5 mm are incapable of spawning and fecundity of those higher than 5 mm also decreases markedly. The result of the investigation suggests that there is a strong relationship between the cause of plenty of miniature Oncomelanias and change of water level in Poyang Lake water in 2011. Too early recession flow of lake water,long-term drought climate and special local geographical environment are related to miniature Oncomelanias. The hydrological regime change of Poyang Lake is a key factor to the growth and decline of snails.

关 键 词：鄱阳湖 草洲湿地 微型螺 

分 类 号：R181.3[医药卫生—流行病学]