Aphidiinae (Hymenoptera: Braconidae) parasitoids of aphids (Hemiptera: Aphididae) in the main pepper producing areas in the province of Corrientes, Argentina

Andrea V. ANDORNO, Sara CÁCERES, Máximo R. A. AGUIRRE, Cynthia L. CAGNOTTI, Silvia L. LÓPEZ

Abstract


The pepper (Capsicum annuum L.) is one of the most important vegetables produced in greenhouses in the province of Corrientes. Aphids (Hemiptera: Aphididae) are among the most important pests that affect this crop. They cause direct damage due to the suction of photosynthates and indirect damage by transmission of viral diseases. Parasitoids Aphidiinae (Braconidae) and Aphelinidae are the most efficient natural enemies of this pest. The objective of this study is to analyze the richness and abundance of aphid fauna and composition of aphid parasitoids. Samples were collected in 14 sampling sites in pepper crops located in two departments of the province of Corrientes (11 in Bella Vista and three in Lavalle). From May to November 2013, live and parasitized aphids were collected monthly, taking five sampling stations per site. Myzus persicae (Sulzer) was the only species of aphid found. About the association pepper-M. persicae four species of primary parasitoids and four species of hyperparasitoids were recorded. Aphidius colemani (Viereck) and Diaeretiella rapae (M´Intosh) were the dominant, primary parasitoids in the departments of Lavalle and Bella Vista, respectively. Useful aspects of aphid pest control in pepper crops are discussed.


Keywords


Myzus persicae. Aphidius colemani. Diaeretiella rapae. Hyperparasitoid. Greenhouse.

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