Sublethal Effects of Chlorantraniliprole on the Mobility Patterns of Sitophilus spp.: Implications for Pest Management.

Simple Summary: This study investigates the sublethal effects of chlorantraniliprole, an insecticide known for its low toxicity to mammals and selectivity towards non-target organisms, on two significant stored-product pests, Sitophilus oryzae (L.) and Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae). Through contact toxicity assays, differences in susceptibility between the two species are observed, with S. zeamais showing higher sensitivity. Subsequent analysis reveals altered mobility behavior in chlorantraniliprole-exposed groups compared with controls, particularly in S. oryzae, which displays reduced number of food approaches and altered locomotion patterns. In contrast, S. zeamais exhibits increased walking time and decreased immobility periods under sublethal concentrations. These findings underscore the importance of considering sublethal effects in understanding the overall impact of chlorantraniliprole on stored-product pest populations. Further exploration into the long-term consequences of sublethal exposure is recommended to enhance pest management strategies. Chlorantraniliprole, an anthranilic diamide insecticide, has emerged as a promising solution for controlling agricultural pests because of its low mammalian toxicity and selectivity towards non-target organisms. This study investigated the sublethal effects of chlorantraniliprole on the mobility behavior of two significant stored-product pests, Sitophilus oryzae (L.) and Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae). Contact toxicity assays revealed varying susceptibility levels between the two species, with S. zeamais showing higher sensitivity. Subsequent analysis of mobility behavior, both in the presence and absence of food, indicated significant differences between chlorantraniliprole-exposed and control groups. While S. oryzae exhibited altered locomotion patterns and a decreased number of food approaches at sublethal concentrations, S. zeamais displayed increased walking time and reduced immobility periods. These findings highlight the importance of considering sublethal effects in understanding the overall impact of chlorantraniliprole on stored-product pests. Further research into the long-term consequences of sublethal exposure is warranted to inform more effective pest management strategies in storage. [ABSTRACT FROM AUTHOR]