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Effects of benzothiazole on survival for reduced reproduction and development in Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)
Author(s) -
Cui Kaidi,
He Leiming,
Zhang Zhengqun,
Zhang Lingyan,
Mu Wei,
Liu Feng
Publication year - 2020
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.5860
Subject(s) - benzothiazole , biology , red flour beetle , pest analysis , toxicology , larva , fecundity , pupa , sitophilus , instar , botany , biochemistry , medicine , population , environmental health
BACKGROUND The red flour beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae), is an important stored‐product pest that is distributed worldwide and has developed resistance to many insecticides. Identifying novel and effective alternative insecticides is important for the control of T. castaneum . The volatile compound benzothiazole has been identified as having great acute toxic activity against T. castaneum . However, a comprehensive evaluation of a new insecticide should include both direct toxic effects and sublethal effects. The aim of this study was therefore to evaluate the effects of benzothiazole on the development and reproduction of T. castaneum . RESULTS Exposure of fourth‐instar larvae to lethal and sublethal concentrations of benzothiazole (LC 10 , LC 30 and LC 50 ) significantly decreased pupation rates, food intake and growth rates in T. castaneum . Larval duration was significantly reduced by approximately 1 day in the LC 30 and LC 50 treatment groups. The LC 50 benzothiazole caused a significant decrease in the weight of pupae and adults, fecundity and egg hatchability. Increased and decreased nutrient (carbohydrate and lipid) contents were observed in surviving larvae and pupae, respectively. The LC 30 and LC 50 treatments caused the down‐regulation of five growth‐positive regulated genes ( PI3K , AKT , CyclinE , S6K1 and S6K2 ) and the up‐regulation of two growth‐negative regulated genes ( 4EBP and FOXO ). CONCLUSION Benzothiazole presented adverse effects on the development and reproduction of T. castaneum , further supporting benzothiazole as a highly active compound in stored‐product protection. © 2020 Society of Chemical Industry