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首页> 外文期刊>Journal of pest science >Do hedgerows influence the natural biological control of woolly apple aphids in orchards?
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Do hedgerows influence the natural biological control of woolly apple aphids in orchards?

机译：Hedgerows是否影响了果园里羊毛苹果蚜虫的天然生物控制？

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摘要

The provision of refuges for natural enemies could be a key aspect for the management of the woolly apple aphid [Eriosoma lanigerum (Hausmann, 1802)] (Hemiptera: Aphididae) in apple orchards. The present study assesses the effects of Pyracantha coccinea (Rosaceae) (firethorn) adjacent to apple orchards as this extra-orchard habitat would positively affect the abundance of natural enemies and control of E. lanigerum. Abundances were evaluated for the pest, the parasitoid, Aphelinus mali (Haldeman, 1851) (Hymenoptera: Aphelinidae) (during two seasons) and generalist predators (only during the second season). The assessments were conducted at different distances from P. coccinea located at the edge of the apple orchards. Additionally, parasitism rates by A. mali were examined using a categorical and two quantitative methods. Results indicate that P. coccinea hedges promoted an early colonization by A. mali in apple orchards especially during the first season. However, parasitism rates by A. mali were not affected at the beginning of the season, but as the season progressed, the rates increased on the apple trees in comparison with the hedges. Additionally, during the second season, the interaction between certain natural enemies had a stronger effect on the population growth rates of E. lanigerum in orchards with P. coccinea compared to control orchards. Based on these results, we conclude that P. coccinea hedges may promote the early colonization by A. mali in the orchards and have a positive effect on the abundance of spiders, but had no effect on coccinelid, carabids, earwigs and syrphids.
机译：为天敌的避难所提供可能是管理羊毛苹果蚜虫（Eriosoma Langerum（Hausmann，1802））（Hemiptera：蚜虫）在苹果园的关键方面。本研究评估了苹果园邻近苹果园（Rosaceae）（Rosaceae）（Firetheae）（Firetheae）（Firethorn）的影响，因为这种果园栖息地将积极影响对E.Lanigerum的丰富的自然敌人和控制。对害虫，寄生虫，阿骨黄素马里（Hymenoptera：Aphelinidae）（两个季节）和通用掠夺者（仅在第二季时）的害虫评估丰富。评估在位于苹果园边缘的P.Coccinea的不同距离下进行。此外，使用分类和两种定量方法检查A.Mali的寄生率。结果表明，P.Coccinea Hedges促进了A.Mali在苹果园的早期定殖，特别是在第一季。然而，A.Mali的寄生率在赛季开始时不受影响，但随着赛季的进展，与对冲比较的苹果树在苹果树上增加。此外，在第二季，某些天敌之间的相互作用对与对照果园的果园中E.Langerum的人口生长速率较强。基于这些结果，我们得出结论，P.Coccinea Hedges可以促进果园中A.Mali的早期殖民化，对蜘蛛的丰度产生积极影响，但对Coccinelid，Carabids，Earwigs和Syrphids没有影响。

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