山东省蒙山大洼地区骚扰阿蚊生态习性的研究

A STUDY ON THE ECOLOGICAL HABIT OF ARMIGERES SVBALBATUS IN DAWA AREA OF THE MENGSHAN MOUNTAIN IN SHANDONG PROVINCE

1986年我们在山东省查见骚扰阿蚊,并观察其生态习性,该蚊在蒙山大洼地区,5月上旬出现成蚊,7月蚊虫数量增多,8、9两月为当地蚊群中的优势种,10月数量明显减少,11月逐渐消失。该蚊在24h内有黎明和黄昏两次吸血高峰,10月下旬气温降到16℃以下,幼虫进入滞育期,-5℃冻入冰内12h,冰溶后存活率为90.5％,冻入冰60h则无一存活。幼虫越冬后,气温升至17℃时,即发育为成蚊,蚊虫在17.5℃以上时,方能活动吸血。

Armigeres subalbatus (A.s.) was reported in Shandong Province for the first time in 1965 and found in five counties of south Shandong including Pingyi,Linyi etc.in 1986.In Dawa area of the Mengshan mountain A.s.alults could be found in the first ten days of May,which increasied in number in July,and become the dominant species in mosquito colonies in Aug.and Sept.,then decreased gradually in number in Oct.and disappeared in Nov.There were two peaks of activity and blood-sucking behavior during the 24 hours of a day,one at dusk and the other at dawn.When the temperature dropped to 16℃ and below in the last ten days of Oct.,the wigglers began their diapause period.The survival ratio reached 90.5% after 12 h freezing at-5℃ and none survived after 60 hours freezing.When the temperature rose to 17℃ and above the over-winterting larvae developed into adults,which could suck blood only at the temperature above 17.5℃.