生境及气象因子对南瓜实蝇雄成虫数量动态的影响

Effect of Habitats and Climatic Factors on the Quantitative Dynamics of Male Bactrocera tau(Walker)

监测不同生境下南瓜实蝇雄成虫的数量动态,分析影响南瓜实蝇数量变动的关键气象因子。结果表明:生境和气象因子显著影响南瓜实蝇雄虫的数量动态。混合菜地、园林区以及混合果园诱集的南瓜实蝇雄虫数量多于住宅区、农贸市场、苦瓜种植地同期诱集的雄虫数;通过逐步回归分析和通径分析得出影响南瓜实蝇雄虫数量动态的气象因子有月平均气温、月平均气压、月平均相对湿度、月最小相对湿度和月日照时数,其中月平均温度是影响其数量动态的最关键气象因子。基于本研究的结果,建议对南瓜实蝇的防控应不仅仅局限在具有其寄主植物的生境,而应根据监测的数据对其他生境的南瓜实蝇进行一并治理。

The quantitative dynamics of male B. tau were monitored in different habitats. Then the key climatic factors affecting the quantitative fluctuation of B. tau were analyzed. The results showed that habitats and climatic factors significantly influenced the quantitative dynamics of male B. tau. The number of B. tau in the mixed vegetable plot, landscape area and mixed fruit orchard were more than those in the residential area, farmer＇s market and field planted bitter gourd. The stepwise regression analysis and path analysis indicated that the quantitative fluctuation of male B. tau was controlled by mean monthly temperature, monthly atmospheric pressure, monthly relative humidity, monthly minimum relative humidity and monthly sunlight hours, hereinto, mean monthly temperature was the most important factors. Based on these results, the control of B. tau was not limited in its hostplant habitats. Bactrocera tau should be managed in other habitats arrcording to its monitoring data.