Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies
Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies
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DOI：
10.1007/s10526-016-9734-3
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发表时间：
2016-04
期刊：
影响因子：
2.5
通讯作者：
Y. Nakashima;Takashi Y. Ida;W. Powell;J. Pickett;M. Birkett;Hisatomo Taki;J. Takabayashi
中科院分区：
文献类型：
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作者：
Y. Nakashima;Takashi Y. Ida;W. Powell;J. Pickett;M. Birkett;Hisatomo Taki;J. Takabayashi
3年来，研究了含(4AS，7S，7AR)-内酯和(1R，4AS，7S，7AR)-内酯的诱饵对紫花苜蓿田豌豆蚜虫、菜粉吸虫、寄生蜂、捕食性天敌和重寄生蜂的影响。虽然不同年份的棉铃虫丰度不同，但信息素诱饵处理显著降低了棉铃虫的丰度。在麦长管蚜天敌中，只有麦长管蚜Aphdius erviHaliday和Praon barbatumMackauer的寄生受到信息素诱饵处理的影响，其寄生率显著提高。相反，对于捕食性物种和重寄生蜂，没有检测到信息素对丰度的影响。这些结果表明，人工合成的蚜性信息素缓释剂能有效地引诱初寄生蜂，提高它们在田间抑制棉铃虫数量的能力，而信息素诱饵不能促进重寄生蜂的生物防治和行内捕食的负面作用。
The effects of lures containing aphid sex pheromone components (4aS,7S,7aR)-nepetalactone and (1R,4aS,7S,7aR)-nepetalactol on abundance of pea aphid,Acyrthosiphon pisumHarris, aphid parasitoids, predators and hyperparasitoids in alfalfa fields were investigated over three years. Although aphid abundance was variable among years, pheromone lure treatment significantly decreased aphid abundance. Among natural enemies of the aphids, only parasitism by the aphid parasitoidsAphidius erviHaliday andPraon barbatumMackauer was affected by pheromone lure treatment, with parasitism rates being significantly increased. In contrast, no pheromone lure effects on abundance were detected for predacious species and hyperparasitoids. These results indicate that slow-release formulations of synthetic aphid sex pheromone can attract primary aphid parasitoids and enhance their ability to suppress aphid abundance in the field, and that negative effects on biological control by hyperparasitoids and intraguild predation are not promoted by pheromone lure treatment.