Stage-specific effects of a fungicide and global warming on copper accumulation and development in a major vineyard insect pest

The dataset contains all the data used in the analyses presented in a manuscript currently submitted to Ecotoxicology and Environmental Safety.

These materials support a study investigating how exposure to Bordeaux mixture (CuSO₄) affects copper accumulation and developmental life-history traits in Lobesia botrana (Lepidoptera: Tortricidae), a major grapevine pest, under current and projected climate conditions. Copper concentrations were selected to reflect realistic field exposures (0, 25, 50, and 100 mg/kg), and thermal conditions were modeled using the SSP5-8.5 scenario for late 21st century summers in the Burgundy viticultural region. We assess how copper and warming influence pest development, larval mass, and head-capsule width. Our results showed that insect copper concentrations increased in response to rising external copper levels, but declined over time through life stages, suggesting internal regulation. High copper concentrations combined with warming increased copper uptake by third instar larvae and males. Copper exposure delayed development and reduced head-capsule width, while warming accelerated growth and increased larval mass. Overall, global warming may enhance larval performance while promoting copper accumulation in L. botrana, potentially affecting copper transfer across trophic levels and undermining biological control in vineyards.