摘要
扬州地区1987年夏季,稻田中三带喙库蚊幼虫种群数量消长基本呈双峰形,幼虫密度从6月下旬开始上升,到7月中旬达到最高峰,以后幼虫密度逐渐降低,但到8月中旬幼虫密度有所回升,形成第二个小的高峰.这种幼虫密度消长模式是多因素综合作用的结果.各龄幼虫和蛹在稻田中均为聚集分布,除三龄幼虫外,其余各龄幼虫和蛹的聚集度具密度依赖性.
In the summer of 1987,investigation was made on population dynamics and spatial pattern of Culex tritaeniorhynchus larvae in rice fields.The larval density had two peaks in the second decades of July and August.The first peak was much higher than the second one.This sort of population dynamics resulted from comprehensive effects of many factors,including temperature,precipitation and management of paddies.All instars in the fields were distributed in aggregated masses,and the indices of aggregation of Taylor's power law among different preadult stages were about the same.
出处
《军事医学科学院院刊》
CSCD
北大核心
1989年第6期441-444,共4页
Bulletin of the Academy of Military Medical Sciences
关键词
三带喙库蚊
幼虫
空间格局
Culex tritaeniorhynchus
spatial pattern
population dynamics
