CHAVIGNY , Pascal

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A single microsatellite marker was used to distinguish between strains of Trichogramma cacoeciae Marchal collected from the carob moth ( Ectomyelois ceratoniae) in Tunisia and from the grapevine moth ( Lobesia botrana) and a hawk moth in France. This marker can be used as an identification and monitoring tool in pest management programs.

The potato aphid Macrosiphum euphorbiae (Thomas) is a major pest of several economic crops in Tunisia. Using 10 microsatellites,we analyzed five populations of M. euphorbiae sampled during the 2004Ð2005 solanaceous and cucurbit season (April through September) from five geographic origins. From 235 aphids, 61 different multilocus genotypes were...

The study of intraspecific variation with respect to host plant utilization in polyphagous insects is crucial for understanding evolutionary patterns of insect-plant interactions. Aphis gossypii (Glover) is a cosmopolitan and extremely polyphagous aphid species. If host plant species or families constitute selective regimes to these aphids,...

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Fourteen microsatellite loci were isolated and characterized in the potato aphid, Macrosiphum euphorbiae Thomas, by screening a genomic library with the oligonucleotide probes (GA)(10) (GT)(10) and (GATA)(4). Allelic diversity was estimated in samples collected from potato fields in Tunisia. Ten loci displayed polymorphism that ranged from two...

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