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首页> 美国卫生研究院文献>Insects >Assessment of the Biological Control Potential of Common Carabid Beetle Species for Autumn- and Winter-Active Pests (Gastropoda Lepidoptera Diptera: Tipulidae) in Annual Ryegrass in Western Oregon
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Assessment of the Biological Control Potential of Common Carabid Beetle Species for Autumn- and Winter-Active Pests (Gastropoda Lepidoptera Diptera: Tipulidae) in Annual Ryegrass in Western Oregon

机译：在俄勒冈州西俄勒冈州的每年黑麦草中的秋冬和冬季活性害虫（胃肠杆菌鳞翅目Diptera：Tipulidae）进行常见Carabid甲虫物种的生物控制潜力

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Many studies have shown that ground beetles feed on different agricultural pests, but little is known about their species communities from US cropping systems. We assessed the biological control potential of the most common carabid beetle species in Oregon annual ryegrass grown for seed by investigating spatial and temporal overlap of the most common species with those of the most damaging autumn- and winter-active pests (slugs, caterpillars and cranefly larvae) and determined the number of field-collected specimens that had fed on the respective pests using molecular gut content analysis. Only the non-native Nebria brevicollis was abundant during pest emergence and tested positive for all three pest groups. While the other common carabid beetle species—Agonum muelleri, Calosoma cancellatum and Poecilus laetulus—were also found to have consumed pests, they were active only during spring and summer, when crop damage by pests is less critical. We also show that disk tilling did not affect any of the four common carabid beetle species and that only N. brevicollis was significantly associated with a vegetated field margin. This study contributes to expanding our knowledge on conservation biological control in a system where chemical pesticides are still the mainstay of control against invertebrate pests.
机译：许多研究表明，地甲虫饲料在不同的农业害虫上饲养，但对来自美国种植系统的物种社区知之甚少。我们通过研究最常见的秋季和冬季活性害虫（Slugs，Caterpillars和Cranefly）来评估俄勒冈州年度黑麦草中最常见的Carabid甲虫物种的生物控制潜力幼虫）并确定使用分子肠道含量分析在各个害虫上喂养的现场收集的样本数。在害虫出苗期间只有非本地性尼布拉菊（Brevicollis）很丰富，并对所有三个有害生物群体进行阳性。虽然另外的常见的Carabid甲虫物种-Agonum Muelleri，Calosoma cancellum和Poecilus LaeTulus也被发现患有消耗的害虫，但它们只在春夏时活跃，当害虫的作物伤害不太关键时，它们只有活跃。我们还表明磁盘耕种不会影响四种常见的甲虫物种中的任何一种，并且只有N.Brevicollis与植被的田间边距显着相关。该研究有助于扩展我们在化学杀虫剂仍然是对无脊椎害虫控制的主体的系统中的保护生物控制的知识。

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