Trophic networks associated with the aphid, Rhopalosiphum maidis (Fitch) (Hemiptera: Aphididae) in a cornfield, Manabí, Ecuador

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-11-29 DOI:10.17268/sci.agropecu.2022.029

Jesús Centeno-Parrales, D. Chirinos, T. Kondo

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Abstract

The corn leaf aphid is considered an important pest associated with maize. This study aimed to discover the trophic associations around Rhopalosiphum maidis in Manabí, Ecuador. Maize leaves were sampled to determine the numbers of parasitized aphids, and the identities of predators and parasitoids. Nine taxa of natural enemies were detected: the primary parasitoid was Lysiphlebus testaceipes Cresson, 1880 (Hymenoptera: Braconidae); the hyperparasitoid Syrphophagus aphidivorus (Mayr, 1876) (Hymenoptera: Encyrtidae); the predatory hoverfly Ocyptamus dimidiatus (Fabricius, 1781) (Diptera: Syrphidae), four species of coccinellids, Cheilomenes sexmaculata (Fabricius, 1781), Cycloneda sanguinea (Linnaeus, 1763), Hippodamia convergens Guerin-Meneville, 1842 and Paraneda pallidula guticollis (Coleoptera: Coccinellidae) and an assassin bug, Zelus sp. (Hemiptera: Reduviidae). A parasitoid, Pachyneuron formosum Walker, 1833 (Hymenoptera: Pteromalidae) emerged from hoverfly pupae. This study reports the presence of the parasitoids S. aphidivorus and P. formosum in Ecuador for the first time. These results increase the knowledge of a four-trophic level relationship (host plant – pest – parasitoids, predators – hyperparasitoids) in a maize agroecosystem as a fundamental basis for biological control programs.

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厄瓜多尔马纳比玉米地中与蚜虫Rhopalosiphum maidis（Fitch）（半翅目：蚜科）相关的营养网络

玉米叶蚜被认为是与玉米相关的重要害虫。本研究旨在了解厄瓜多尔Manabí地区少女蚜的营养关联。对玉米叶片进行取样，以确定被寄生蚜虫的数量，以及捕食者和寄生蜂的特征。共检出天敌9个分类:主要寄生蜂为白茧蜂，1880(膜翅目:小蜂科);超寄生性蚜蚜(syphophagus aphidivorus, Mayr, 1876)(膜翅目:蜂科);捕食性食蚜蝇(fabicius, 1781)(双翅目:蚜蝇科)、瓢虫科4种，分别为:sexmaculata Cheilomenes (fabicius, 1781)、Cycloneda sanguinea (Linnaeus, 1763)、converdamia Guerin-Meneville(1842)和paleeda pallidula guticollis(鞘翅目:瓢虫科)和Zelus sp.(半翅目:蚜蝇科)。寄生蜂，Pachyneuron formosum Walker, 1833(膜翅目:翅蚜科)从食蚜蝇蛹中孵化。本研究首次在厄瓜多尔发现了蚜虫S. aphidivorus和formosum两种寄生蜂。这些结果增加了对玉米农业生态系统中四营养级关系(寄主植物-害虫-拟寄生物，捕食者-超拟寄生物)的认识，作为生物防治计划的基本基础。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.