摘要
本文报告1987年2～5月与1988年2～4月在江苏无锡、扬州与上海奉贤等地对三带喙库蚊越冬后发生规律及其生理年龄组成的调查结果。该蚊在无锡,上海于3月份出现,4月中旬明显增加。2月当气温高于11℃时,在畜棚可诱捕到个别成蚊。幼虫于4月下旬出现,新蚊于4月底与5月上旬出现。扬州所捕蚊时间比无锡、上海晚约一个月。早期所捕蚊为未产卵蚊,受精率为98%;翅鳞与胸悬骨测试表明,该蚊为高龄蚊,发育蚊占94%,吸血蚊表现为生殖营养协调。二氧化碳对早期蚊诱捕作用并不明显。
The paper presents the results of study on the early occurrences and age-compositions of the overwintered mosquito, Cx. tritaeniorhynchus Giles from Feb. to May, 1987 and Feb. to April,1988 in Wuxi, Yangzhou, Jiangsu Province, and Fengxian, Shanghai. It was found that the overwintered females appeared by the end of March and early April in Wuxi and Fengxian. By the middle of April the overwintered females increased sharply. However, a few overwintered females could be caught from livestock sheds when the temperature was over 11℃ during sunset from Feb. to March, for example, one female overwintered was caught in the livestock shed in Fengxian, Shanghai, on Feb. 22, 1988, in which it was warmer (15.3℃). The new larvae and adults of the Cx. tritaeniorhynchus appeared by the end of the April and early May. The occurrence date of the overwintered females in tile Yangzhou, Jiangsu was about one month later titan in the Wuxi and Fengxian. The appearences of the overwintered females were association with the temperature changes, rains, and winds in the early spring. All females caught in the early spring were nulliparous and old ages by the age detection. The inseminative and non-diapausive ratios were 98%, 94%, respectively. The females fed appeared the gonotrophic concordance in the early spring.In addition, the results showed that the overwintered females could not almostbe becaught by the CO_2 traps in the field.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
1991年第2期65-69,共5页
Chinese Journal of Vector Biology and Control
关键词
三带喙库蚊
越冬
滞育
生理年龄
Culex tritaeniorhynchus Giles diapause overwintering age-composition
