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首页> 外文期刊>Proceedings of the Entomological Society of Washington >Milesiine flower flies (Diptera: Syrphidae) in a central Appalachian broadleaf forest: abundances, flight periods, and diflubenzuron.
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Milesiine flower flies (Diptera: Syrphidae) in a central Appalachian broadleaf forest: abundances, flight periods, and diflubenzuron.

机译：Milesiine花在阿巴拉契亚中部阔叶林中飞行（双翅目：Syrphidae）：丰度，飞行时期和敌百苯隆。

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摘要

Twenty Malaise traps were to collect adult milesiine syrphids in four watersheds in a central Appalachian broadleaf forest (West Virginia) from early April to late September in 1991-93. The traps captured 31 species in 12 genera. As a group, these flies flew throughout the annual sampling periods, their sample sizes varied with species and year, and their abundances peaked in late May or mid-June, depending on the year. For all species whose sample size was >=10 individuals, male-female sex ratios varied from 0.1 to 3.0. A split-plot analysis was performed of flies captured from mid-May through early August, a period in each of the 3 years when traps captured at least one fly during a sampling period. This analysis did not find an effect of trap site or diflubenzuron on fly population sizes based on Malaise sampling, because these effects did not exist or the sample size was too small to detect them.
机译：从1991-93年4月初至9月下旬，有20个Malaise诱捕器将在阿巴拉契亚中央阔叶森林（西弗吉尼亚）的四个集水区中收集成年的海生的虹鳟。陷阱捕获了12个属的31个物种。作为一组，这些苍蝇在整个年度采样期间飞行，其样本大小随物种和年份而变化，并且其丰度在5月下旬或6月中旬达到峰值，具体取决于年份。对于样本量大于等于10个个体的所有物种，男女性别比在0.1到3.0之间变化。对从5月中旬到8月初捕获的苍蝇进行了分块分析，这是3年中的每一个时期，陷阱在采样期间捕获了至少一只苍蝇。该分析未发现基于Malaise采样的诱捕位点或地氟苯隆对苍蝇种群大小的影响，因为这些影响不存在或样本量太小而无法检测到。

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