Publications by authors named "C Plantamp"
Article Synopsis
- Understanding insecticide resistance in Myzus persicae (green peach-potato aphid) is crucial for creating effective control strategies, particularly against neonicotinoids.
- The study identified that resistance arises from two key mechanisms: metabolic resistance linked to P450 enzyme overexpression and a specific genetic mutation (R81T), with a significant interaction between these factors enhancing resistance levels.
- Different genotypes of the R81T mutation show variability in resistance, indicating that multiple mechanisms must be considered together to fully explain resistance phenotypes.
Monitoring pesticide resistance is essential for effective and sustainable agricultural practices. Bioassays are the basis for pesticide-resistance testing, but devising a reliable and reproducible method can be challenging because these tests are carried out on living organisms. Here, we investigated five critical parameters and how they affected the evaluation of resistance to the organophosphate phosmet or the pyrethroid lambda-cyhalothrin using a tarsal-contact protocol on Drosophila suzukii, a worldwide invasive pest.
View Article and Find Full Text PDFDating population divergence within species from molecular data and relating such dating to climatic and biogeographic changes is not trivial. Yet it can help formulating evolutionary hypotheses regarding local adaptation and future responses to changing environments. Key issues include statistical selection of a demographic and historical scenario among a set of possible scenarios, and estimation of the parameter(s) of interest under the chosen scenario.
View Article and Find Full Text PDFPhenotypic plasticity may contribute to the invasive success of an alien species in a new environment. A highly plastic species may survive and reproduce in more diverse environments, thereby supporting establishment and colonization. We focused on plasticity in the circadian rhythm of activity, which can favour species coexistence in invasion, for the invasive species , which is expected to be a weaker direct competitor than other species of the resident community.
View Article and Find Full Text PDFArticle Synopsis
- Winter severity and overwintering capacity are crucial for understanding the success of invasive species, particularly ectotherms like Drosophila suzukii, which has been recently introduced to Europe and North America.
- The study investigated the effects of cold treatments on survival, fertility, and oxidative balance in D. suzukii, revealing that while cold significantly impacted survival rates, it did not affect female fertility.
- Notably, females showed a stronger resilience to cold with different physiological traits, suggesting they may utilize alternative mechanisms to cope with cold injury, which could help in predicting the species' future invasions.