Study on morphologic quantitative characteristics of Oncomelania hupensis Ⅲ. Morphologic variations and their spatial correlation among snail populations
- VernacularTitle:湖北钉螺数量性状研究Ⅲ种群间形态性状变异及其空间相关分析
- Author:
Yibiao ZHOU
;
Genming ZHAO
;
Wenxiang PENG
;
Jianguo WEI
;
Qingwu JIANG
- Publication Type:Journal Article
- Keywords:
Oncomelania hupensis;
Morphologic quantitative traits;
Morphologic variation;
Spatial correlation
- From:
Chinese Journal of Schistosomiasis Control
1989;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore morphologic variations and their spatial correlation among Oncomelania hupensis populations from the mainland of China. Methods Twenty-seven snail populations from ten provinces were collected. The morphologic indices of shells and geographic distances between the snail spots were measured respectively, and the morphologic variations among snail populations and the correlations between morphologic variations and geographical distances were analyzed. Results The median of Euclidean distances was 3.24 (95% CI: 2.88-3.81) among 20 snail populations of O.h.hupensis including a snail population from Guangxi Province, and was 3.15 (95% CI: 2.86-3.76) excluding the Guangxi snail population; the median was 1.69 (95% CI: 1.33-2.27) among 6 populations of O.h.robertsoni. Whether including a snail population from Guangxi Province or not, the median among O.h.robertsoni was less than that among O.h.hupensis (P0.05). The correlation coefficient was 0.2655 for O.h.hupensis including a snail population from Guangxi Province, 0.2567 not including it; and was 0.3121 for ribbed-shell population. Conclusions Morphologic variation among O.h.hupensis is bigger than that among O.h.robertsoni, and morphologic variation among ribbed-shell populations is bigger than that among smooth-shell populations. There is significant spatial structure among ribbed-shell snail populations of Oncomelania hupensis distributed in the mainland of China.
