Natural Enemies and Pest Control in Field-Grown Crop in Southern Senegal

昆虫学(英文) Pub Date : 2022-01-01 DOI:10.4236/ae.2022.104021

Etienne Tendeng, Babacar Labou, Elhadji Serigne Sylla, A. Balde, M. Diatte, O. Seydi, I. Ndiaye, P. Diop, S. O. Sène, S. Djiba, K. Diarra

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引用次数: 2

Abstract

Crop pests are a permanent threat to horticultural production. Several control methods are recommended for their control, including biological control. This method based on the use of natural enemies is not well established. The objective of this study was to assess the diversity and abundance of natural enemies of crop pests. A survey of crops associated with pests was carried out on 144 fields in southern Senegal to measure the diversity and abundance of natural enemies of various crop pests, determine the native parasitoid complex and assess parasitism rates. Ecological indices were calculated to assess the diversity of natural enemies. A total of 25 natural enemy species were identified, including 15 parasitoids and 10 predators. Predatory Hemiptera and Parasitoid Hymenoptera were high biodiversity. The parasitism rates vary between 0 and 50% depending on the abundance of pests and parasitoid species. Knowledge of the diversity of natural enemies and the understanding of trophic interactions with pests are important in the development of biological crop protection in order to preserve resilience in agroecosystems.

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塞内加尔南部大田作物的天敌及病虫害防治

农作物害虫是对园艺生产的永久威胁。建议采用几种防治方法，包括生物防治。这种以使用天敌为基础的方法还没有很好地建立起来。本研究的目的是评估作物害虫天敌的多样性和丰度。在塞内加尔南部144块农田开展了一项与害虫相关的作物调查，以测量各种作物害虫天敌的多样性和丰度，确定原生拟寄生虫复合体并评估寄生率。计算生态指数，评价天敌的多样性。共鉴定出天敌25种，其中拟寄生物15种，天敌10种。掠食性半翅目和寄生性膜翅目生物多样性较高。寄生率在0 - 50%之间，取决于害虫和拟寄生虫种类的丰度。了解天敌的多样性和了解与害虫的营养相互作用对作物生物保护的发展至关重要，以保持农业生态系统的恢复力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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昆虫学(英文)

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