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首页> 外文期刊>Biological Control: Theory and Application in Pest Management >Identification and impact of hyperparasitoids and predators affecting Cyzenis albicans (Tachinidae), a recently introduced biological control agent of winter moth (Operophtera brumata L.) in the northeastern USA
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Identification and impact of hyperparasitoids and predators affecting Cyzenis albicans (Tachinidae), a recently introduced biological control agent of winter moth (Operophtera brumata L.) in the northeastern USA

机译：近期蛾（Tachinidae），冬季蛾（Operophera Brumata L.）最近引入的冬季生物控制剂（Tachinidae）的鉴定和影响。在美国东北部

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摘要

The success or failure of an introduced biological control agent may depend on its rate of mortality from disease, predation, and hyperparasitism. Cyzenis albicans Fallen (Diptera: Tachinidae) was introduced to the northeastern U.S. as a biocontrol agent of the invasive species winter moth, Operophtera brumata L. (Lepidoptera: Geometridae). This study aimed to determine the rates of mortality from predation by generalist ground predators and hyperparasitism of C. albicans puparia, identify any hyperparasitoids, and assess the impact of predation and hyperparasitism on the potential success of C. albicans in controlling the winter moth. Mortality of C. albicans puparia was primarily due to predation, but there was also hyperparasitism. Predation and parasitism of C. albicans puparia were consistently high across the six study sites and two years of study, but somewhat lower than was reported from British Columbia, where successful establishment of C. albicans in the 1970s was followed by a decrease inwinter moth densities. In this study, three genera of ichneumonid hyperparasitoids were detected and identified using a combination of morphological and molecular approaches: Phygadeuon (1 species), Pimpla (2 species), and Gelis (2 species), all of which contain species with broad host ranges and were likely acting as facultative hyperparsitoids. We conclude that while total mortality of C. albicans puparia is high, it is unlikely to have a significant effect on biological control of winter moth in this system, although it may explain why C. albicans has been slow to establish in this region. Our study emphasizes the importance of assessing the mortality of introduced biological control agents caused by native predators and hyperparasitoids.
机译：介绍的生物控制剂的成功或失败可能取决于其来自疾病，捕食和过慢性主义的死亡率。 Cyzenis albicans堕落（Diptera：Tachinidae）被引入东北美国。作为侵袭性物种冬季蛾，Operophera Brumata L.（Lepidoptera：Geometridae）的生物控制剂。本研究旨在确定总体地面捕食者捕食的死亡率和C. albicans Puparia的普及，鉴定任何丙哒药物，并评估捕食性和紫外化的影响对C.古代万人控制冬季蛾的潜在成功。 C. albicans Puparia的死亡率主要是由于捕食，但也有紫外化。 C. albicans Puparia的捕食和寄生症在六个学习网站上始终如一，两年的研究始终如一，但从不列颠哥伦比亚省报告的情况下略低，在20世纪70年代的成功建立C.古木儿人的成功建立之后是减少冬季蛾的密度。在该研究中，使用形态和分子方法的组合检测并鉴定了三种Inhumonid超代脂合物：Phygadeuon（1种），Pimpla（2种）和Gelis（2种），所有这些都含有具有宽主体范围的物种并且很可能表现为伴培养型钙质骨质。我们得出结论，虽然C. albicans Puparia的总死亡率很高，但它不太可能对该系统中冬季的生物控制产生重大影响，尽管它可以解释为什么C.古木儿在该地区建立速度缓慢。我们的研究强调了评估由本地捕食者和肝癌引起的引入生物对照剂的死亡率的重要性。

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