Is Helicoverpa armigera (Lepidoptera: Noctuidae) in Brazil? First detailed molecular detection report

Tay Wee Tek, Soria Miguel F., Walsh Thomas, Thomazoni Danielle, Silvie Pierre, Behere Gajanan T., Anderson Craig. 2013. Is Helicoverpa armigera (Lepidoptera: Noctuidae) in Brazil? First detailed molecular detection report. In : 61st Annual Meetings of Entomological Society of America , Austin, United States of America , 10-13 November 2013. ESA. s.l. : s.n., 1 p. Annual Meeting Entomological Society of America. 61, Austin, États-Unis, 10 Novembre 2013/13 Novembre 2013.

Note générale : Le résumé est accessible à cette adresse : http://esa.confex.com/esa/2013/webprogram/Paper78074.html

Résumé : The cotton bollworm, Helicoverpa armigera, is a quarantine agricultural pest for the American continents. It is thought to have invaded the American continents and led the founding of current H. zea populations in the American continents ~1.5 million years ago. This relatively recent divergence is evident via hybridisation under laboratory conditions. Despite periodic incursions of H. armigera into North America, this pest species is not believed to have successfully established significant populations in the New World. For the first time, we provide molecular evidence via mitochondrial DNA (mtDNA), cytochrome oxidase I (COI) and cytochrome b (Cyt b) partial gene sequences the successful recent incursion of H. armigera into the New World, with populations from the state of Mato Grosso (central-eastern and southern regions) in Brazil, likely to have taken place post 2006. The mtDNA haplotypes detected in the Brazilian H. armigera individuals are common throughout the Old World, thus precluding identification of Old World origins of the founder populations. Combining the two partial mtDNA gene sequences we showed that at least two matrilines were present in Brazil, while the inclusion of three nuclear DNA Exon-Primed Intron-Crossing (EPIC) markers identified a further two possible matrilines. Based upon five genetic markers, the Brazilian H. armigera from Mato Grosso likely originated from at least four maternal lineages.

Classification Agris : H10 - Ravageurs des plantes

Auteurs et affiliations

• Tay Wee Tek, CSIRO (AUS)
• Soria Miguel F., IMAmt (BRA)
• Walsh Thomas, CSIRO (AUS)
• Thomazoni Danielle, IMAmt (BRA)
• Silvie Pierre, CIRAD-PERSYST-UPR SCA (FRA) ORCID: 0000-0002-3406-6230
• Behere Gajanan T., Research Complex for North Eastern Hill Region (IND)
• Anderson Craig, CSIRO (AUS)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/571611/)

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