Distribution of Oncomelania snails in marshland of Changsha section of Xiang River,2003-2007
- VernacularTitle:2003～2007年湘江长沙段洲滩钉螺分布调查
- Author:
Nianmeng LIU
;
Jianming SHEN
;
Liwu LI
;
Chao LUO
;
Hui SUN
;
Ziqiang HU
- Publication Type:Journal Article
- Keywords:
Xiang River;
Marshland;
Snail;
Evaluation
- From:
Chinese Journal of Schistosomiasis Control
1989;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the distribution and quantitative changes in each marshland of Changsha section of the Xiang River and evaluate the effectiveness of snail control in recent years.Methods A snail survey was carried out by using the systematic and environmental sampling method for 5 years.Results Twenty-four marshlands were investigated continuously from 2003 to 2007.The number of marshland with snails accounted for 77.8%,66.7%,70.8%,75.0% and 62.5% of the each investigated year,respectively.The total number of marshlands with snails were 20 that accounted for 83.3% of all marshlands investigated over the five years.The number of snails and the rate of living snails were different in each marshland,but the downward trend was significant(P
