The impact of parasitoids on diamondback moth in Europe: a life table approach

Abstract Diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), was first recorded in North America from Europe about 150 years ago and can be a significant pest of canola Western Canada. Because parasitism P. Canada is generally low, the introduction one or more additional exotic parasitoids being considered to increase suppression populations. Life table studies determine impact on diamondback moth populations were conducted northwestern Switzerland 2014–2016. Net reproductive rates found less than seven out eight life tables, suggesting that are mostly driven by immigration recolonisation. In total, primary parasitoid species hyperparasitoid associated with moth. Pupal D. collaris reached up 30%, but because generational mortality mainly abiotic factors predation larvae, overall contribution pupal low (< 6%). regions Canada, where may have increasing larval mortality, addition promising approach. across necessary need for such intervention.