Grape phylloxera (Daktubsphaira vitifoliae Fitch) in Argentina: ecological associations to diversity, population structure and reproductive mode

摘要

Background and AimsThe North American insect pest grape phylloxera was introduced into Europe in the 19th century and devastated the Vitis vinifera-based vineyards. It has since become widely distributed among the world's vineyards. Although it is present in Argentina, it has not caused any major damage. This work aims: to characterise the genetic diversity of Argentinean phylloxera; to determine population structure and reproductive mode; to compare Argentinean genotypes with samples from seven other countries; and to examine relationships between the infestation level and genetic profile with ecological factors.