Selection Behavior of the Beet Armyworm, <i>Spodoptera exigua</i> (Hubner) Between Bt Maize and Conventional Maize Plants.

ABSTRACT: Establishing refuges is a primary strategy for managing resistance in target pests against Bt maize. The larval feeding and dispersal, and adult oviposition behaviors of Spodoptera exigua (Hübner) on Bt and non-Bt maize plants are critical factors in determining optimal refuge configurations. This study employed laboratory and field experiments to evaluate the larval feeding and dispersal behaviors, as well as the oviposition preferences of S. exigua moths, on Bt (Cry1Ab + Vip3Aa19) and non-Bt maize plants. Results showed that as time of the choice test increased, the larval selection rate on Bt maize leaves declined progressively, with all instars (1st-5th) preferring to feed on non-Bt maize. After 48 h, the selection rates of larvae for non-Bt and Bt maize were 40.63-66.25%

SUBMITTER: Song C 

PROVIDER: S-EPMC12564333 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature