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Streito J. C., Clouet C., Hamdi F., Gauthier Nathalie. (2017). Population genetic structure of the biological control agent Macrolophus pygmaeus in Mediterranean agroecosystems. Insect Science, 24 (5), 859-876. ISSN 1672-9609

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Lien direct chez l'éditeur doi:10.1111/1744-7917.12370

Titre
Population genetic structure of the biological control agent Macrolophus pygmaeus in Mediterranean agroecosystems
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000411288500014
AuteursStreito J. C., Clouet C., Hamdi F., Gauthier Nathalie.
SourceInsect Science, 2017, 24 (5), p. 859-876. ISSN 1672-9609
RésuméBiological control of agricultural pests relies on knowledge of agroecosystem functionality, particularly when affected by the use of mass-produced biological agents. Incorporating pre- and/or post-release information such as genetic diversity and structure on these agents using molecular-based approaches could advance our knowledge of how they perform in agroecosystems. We evaluated the population genetics of Macrolophus pygmaeus, the most widely used predatory mirid against many arthropod pests of greenhouse crops in the Mediterranean region, using the mitochondrial Cytb sequence and microsatellite data, and population genetics and phylogeny approaches. We investigated commercially mass-produced insects (i.e., commercial insects either mass-reared in the laboratory for many generations, or purchased by farmers and released in the greenhouses) and wild insects (i.e., that occur naturally outside or are collected in nature for release in the greenhouses). The mirids were mainly collected in agroecosystems in which solanaceous plants are grown in northern Spain, southern France and Greece. Both molecular markers and approaches distinguished 2 genetically differentiated populations. The less genetically diverse population, hereafter named the commercial strain included all individuals from laboratory mass-rearings and most releases of commercially bred individuals. The most genetically diverse population mainly comprised individuals originating from noncultivated environments, or from releases of wild individuals. Rare examples of hybridization between M. pygmaeus from the 2 populations were observed and asymmetric gene flow was revealed. These findings provide new insights into what happens to M. pygmaeus released in the agroecosystems we studied, and show that it is possible to monitor some commercial strains.
Plan de classementSciences du monde végétal [076] ; Sciences fondamentales / Techniques d'analyse et de recherche [020]
Descr. géo.FRANCE ; ESPAGNE ; GRECE ; PORTUGAL ; MADERE ; ZONE MEDITERRANEENNE
LocalisationFonds IRD [F B010071033]
Identifiant IRDfdi:010071033
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010071033

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