摘要
目的研究城市化过程中病媒蚊虫群落特征和演替动态变化,了解主要传播媒介蚊虫种群动态及与城市化的关系。方法采用人诱法,连续4年在清远市调查蚊虫种群密度。结果此次调查清远市蚊虫有致倦库蚊、骚扰阿蚊、白纹伊蚊、中华按蚊和三带喙库蚊5种;致倦库蚊为优势蚊种,占群落种群数量的92.27%;其次为骚扰按蚊,占3.98%;白纹伊蚊和三带喙库蚊数量较少,各占1.62%;中华按蚊仅占0.51%。在研究期间,比较2006年与2008、2009年数据,结果表明群落构成发生显著变化,其中致倦库蚊在种群中所占比例逐渐减少,白纹伊蚊所占比例逐渐增加,中华按蚊在种群中逐渐消失,三带喙库蚊在群落中数量波动较大。不同蚊种在夜间呈现不同活动节律,致倦库蚊和三带喙库蚊19:00-22:00其密度逐渐增加,高峰主要在21:00之后;白纹伊蚊在夜晚各个时间段都有活动,活动高峰主要在20:00之前;骚扰阿蚊呈现与白纹伊蚊相似的活动规律。结论清远市在城市化过程中,登革热媒介白纹伊蚊逐渐增加,而流行性乙型脑炎(乙脑)媒介三带喙库蚊则在不同年份中波动较大;传疟媒介中华按蚊逐渐减少,甚至消失。因此在城市化过程中,需要加强登革热和乙脑媒介的监测和防控。
Objective To determine the characteristics and dynamics of mosquito population during the process of rapid urbanization, and to identify the relationships between the dynamic of main vectors and rapid urbanization. Methods The mosquito density was investigated for the past four years using the human-bait method. Results Five species of mosquito were captured, including Culex tritaeniorhynchus, Culex pipiens quinquefasciatus, Anopheles sinensis, Aedes albopictus, and Armigeres subalbatus. Cx. pipiens quinquefasciatus was predominant （92.27%）, followed by Ar. subalbatus （3.98%）. The proportions of Ae. albopictus and Cx. tritaeniorhynchus were relatively small, accounting for 1.62% each. The smallest was An. sinensis （0.51%）. During a four-year study period, significant changes had taken place in the proportions of mosquito populations by comparison among the data in 2006, 2008 and 2009. The population of Cx. pipiens quinquefasciatus decreased while increased of that of Ae. albopictus. An. sinensis gradually disappeared as the time elapsed. The poplation of Cx. trltaeniorhynchus fluctuated largely in the study periods. In the evening, varieties of mosquito species showed distinct activity patterns. The biting time of Cx. pipiens quinquefasciatus and Cx. tritaeniorhynchus was from 19：00 to 22：00 in the evening with a peak after 21： 00. Ae. albopictus could be caught all the night with the main peak before 20： 00. A similar activity pattern was observed from At. subalbatus and Ae. albopictus. Conclusion During the process of rapid urbanization, the population of the dengue vector, Ae. albopictus, increased gradually. The population of the Japanese encephalitis vector, Cx. tritaeniorhynchas, fluctuated greatly in different years. However, the malaria vector, An. sinensis, eventually was not found. Thus, we propose that the surveillance and control of Ae. albopictus and Cx. tritaeniorhynchus should be strengthened during the process of urbanization.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
2011年第6期561-563,共3页
Chinese Journal of Vector Biology and Control
关键词
城市化
蚊虫群落
登革热
疟疾
流行性乙型脑炎
Urbanization
Mosquito population
Dengue
Malaria
Japanese encephalitis
