白纹伊蚊种群生态学研究——Ⅴ.广州地区白纹伊蚊自然种群数量季节消长研究

Studies on the Population Ecology of Aedes albopictus——5.The Seasonal Abundance of Natural Population of Aedes albopictus in Guangzhou

1982年4月至1984年7月在广州中山大学校园内调查了竹林和荫蓬两种不同生境内白纹伊蚊卵、幼虫、蛹、成虫的季节消长。结果表明,未成熟期出现在2月上旬至12月中旬,5月末和9月末分别出现主、次两高峰,冬季12月中旬至2月上旬,幼虫仍有少量可存活过冬,但密度很低。12月下旬至1月末不见蛹,其它季节数量很少。成虫始见于3月下旬4月上旬,5月中、8至10月为取食高峰,12月至3月上旬不见成虫。成虫在秋季10月中、下旬开始产滞育卵,逐渐积累,并越冬。次年3月上旬大量滞育卵孵化。文中讨论了季节消长与环境因子的关系,并探讨了防治策略的问题。

The seasonal abundance of different developmental stages(egg,larva,pupa and adult)of Aedes albopictus was observed from April 1982 to July 1984 in the bamboo grove and shady habitat of Zhongshan University campus.It was shown that the immature stages appeared in early February to mid-December and two peaks in late May and late September respectively.The minor larvae could over-winter from mid-December to early February of next year,but the density of po-pulation was very low.The pupae could not be found from late December to late January of next year.They could be found in other season,but the number was very few.The adults appeared in the late March and early pril.There were two peaks in mid-May and from August to October respectively and disappeared from December to early March.The adults began to produce diapausing eggs in mid-October.Then they increased gradually and verwinter.Most of diapausing eggs hatched in March next year.The relationship betewen seasonal abundance and en-vironmental factors and the problem of control strategy were discussed as well.