Publications des scientifiques de l'IRD

Torres-Leguizamon Magallita, Dupas Stéphane, Dardon D., Gomez Y., Nino L., Carnero A., Padilla A., Merlin I., Fossoud Amandine, Zeddam Jean-Louis, Léry Xavier, Capdevielle Dulac C., Dangles Olivier, Silvain Jean-François. (2011). Inferring native range and invasion scenarios with mitochondrial DNA : the case of T. solanivora successive north-south step-wise introductions across Central and South America. Biological Invasions, 13 (7), p. 1505-1519. ISSN 1387-3547.

Titre du document
Inferring native range and invasion scenarios with mitochondrial DNA : the case of T. solanivora successive north-south step-wise introductions across Central and South America
Année de publication
2011
Type de document
Article référencé dans le Web of Science WOS:000291164300003
Auteurs
Torres-Leguizamon Magallita, Dupas Stéphane, Dardon D., Gomez Y., Nino L., Carnero A., Padilla A., Merlin I., Fossoud Amandine, Zeddam Jean-Louis, Léry Xavier, Capdevielle Dulac C., Dangles Olivier, Silvain Jean-François
Source
Biological Invasions, 2011, 13 (7), p. 1505-1519 ISSN 1387-3547
Tecia solanivora (Lepidoptera: Gelechiidae) is an invasive species that attacks the tubers of the potato Solanum tuberosum. It is considered a serious pest of potato crops and stocks in all countries where it occurs. In the present study, we sequenced 541 individuals sampled across the T. solanivora distribution range, using the mitochondrial DNA marker Cytochrome b (Cytb) to delimit the area of species origin. We also analyzed the genetic structure of T. solanivora in its putative area of origin and described differences in haplotype diversity between samples from different geographic origins affected by the invasion. We observed a gap in the level of genetic diversity between Guatemalan samples (h between 0.77 and 0.97) and those from Costa-Rica, Venezuela, Colombia, Ecuador and the Canary Islands (h between 0 and 0.56). The number of haplotypes has decreased over the colonization process, ending with the observation of a single haplotype in Colombia, Ecuador and the Canary Islands. Consequently, the invasion of South American countries by T. solanivora is likely to have had a front-like step-wise progression, where the most recently invaded country becomes the source of subsequent invasion.
Plan de classement
Sciences du monde végétal [076]
Localisation
Fonds IRD [F B010053593]
Identifiant IRD
fdi:010053593
Contact