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Discrimination of two natural biocontrol agents in the Mediterranean region based on mitochondrial DNA sequencing
V I Evangelou1, M Bouga, N G Emmanouel
1Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 75 Iera Odos Str., 11855, Athens, Greece.
Abstract:
Macrolophus pygmaeus and M. melanotoma (Hemiptera: Miridae) are biological control agents used in greenhouse crops, the former preferring plants of the Solanaceae family and the latter the aster Dittrichia viscosa. The discrimination of these species is of high significance for effective biological pest control, but identification based on morphological characters of the host plant is not always reliable. In this study, sequencing analysis of mitochondrial gene segments 12S rDNA and COI has been combined with crossing experiments and morphological observations to develop new markers for Macrolophus spp. discrimination and to provide new data on their genetic variability. This is the first comprehensive research in Greece on M. pygmaeus and M. melanotoma genetic variability based on sequencing data from 12S rDNA and COI gene segments. The relationship of this variability to host plant preference must be investigated in an agricultural ecosystem.
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