关键词: 蚊科, 群落学特征, 稻田, 水稻生长遮盖度, 元江河谷

Abstract: Objective To learn the mosquito community characteristics in rice fields and the effect of rice coverage on it;to explore surveying and analyzing methods of mosquito communities in large water bodies.Methods At different rice development stage,1 000 ml dips were used to collect mosquito larvae.The data were analyzed by computer for statistics and community characteristics.Results In this community,there were 9 species of 3 subgenera of 2 genera in subfamilies Anophelinae and Culicinae.Shannon-Wiener diversity and homogeneity indexes of the community were respectively 1.072 and 0.488,Dominances of Anopheles sinensis,Culex pipiens quinquefasciatus and Culex fuscocephala were 67.69,32.65 and 17.65;and dominance centralization index was 0.447.There was positive correlation among the 3 dominant species and negative correlation between rice growing coverage and mean larvae densities( r<、I>=-0.76,95% confidence interval:-0.61～-0.97).Conclusion There were a few of mosquito species with simple form and structure in the rice field,however the mosquito community was stable and suitable species combination.The larvae densities were declining with rice growing coverage.