Towards a practical trap for deer flies (Diptera: Tabanidae): initial tests of a bi-level Nzi trap

Steve Mihok
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Abstract

Abstract A modified Nzi trap was tested at a residence and at a farm in eastern Ontario, Canada to better capture high-flying tabanids (Diptera) such as Chrysops Meigen. A new upper trap entrance was created to provide a higher and larger opening by reducing the front blue top shelf to half its height. To minimise escape of low-flying tabanids, a vertical inner baffle was added to direct low-flying tabanids up into the cone. Half of the tests of 18 new designs caught 1.5–2.7 times more deer flies than the Nzi trap did, with the other trap designs being as effective as the Nzi trap. The optimal design that maintained equal catches of other biting flies relative to the Nzi trap was one with a phthalogen inner horizontal shelf and a netting inner vertical baffle. This design is defined in the present as the “bi-level Nzi trap.” Chrysops entered the trap mostly through the top (88%; 17 spp.), along with Hybomitra Enderlein (94%; 12 spp.). Tabanus Linnaeus (9 spp.) entered through both entrances. The most abundant Tabanus, T. quinquevittatus Wiedemann, entered mostly through the bottom (70%), whereas Stomoxys calcitrans Linnaeus entered mostly through the top (92%).
开发实用的鹿蝇(双翅目:田蝇科)诱捕器:双层 Nzi 诱捕器的初步试验
摘要 在加拿大安大略省东部的一个住宅和一个农场测试了一种改进的Nzi诱捕器,以更好地捕捉高飞的食蚁兽(双翅目),如Chrysops Meigen。新的上部诱捕器入口通过将前部蓝色顶架降低到一半的高度而变得更高、更大。为了尽量减少低空飞行的鼠类逃逸,还增加了一个垂直内挡板,将低空飞行的鼠类引向锥体。在 18 种新设计的测试中,有一半捕获的鹿蝇数量是 Nzi 诱捕器的 1.5-2.7 倍,其他诱捕器设计的效果与 Nzi 诱捕器相当。与 Nzi 型诱捕器相比,能保持与 Nzi 型诱捕器同样捕获其他叮咬性苍蝇的最佳设计是带有酞菁内水平架和网状内垂直挡板的诱捕器。这种设计被定义为 "双层 Nzi 诱捕器"。金眼鲷大多从顶部进入诱捕器(88%;17 种),Hybomitra Enderlein(94%;12 种)也从顶部进入诱捕器。林奈的 Tabanus(9 种)从两个入口进入。数量最多的 Tabanus,T. quinquevittatus Wiedemann,主要从底部进入(70%),而 Stomoxys calcitrans Linnaeus 则主要从顶部进入(92%)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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