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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (3): 152-157.doi: 10.11924/j.issn.1000-6850.casb2023-0106

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Tolerance of Red Claw Crayfish Juvenile to Four Kinds of Rice Pesticides

CHI Meili1(), LU Kaiwen2, JIANG Wenping1, PAN Lingjie2, CHENG Shun1, ZHENG Jianbo1, SUN Jian2, LI Fei1()   

  1. 1 Zhejiang Institute of Freshwater Fisheries, Huzhou, Zhejiang 313001
    2 Ningbo Haishu District Agricultural Technology Management Service Station, Ningbo, Zhejiang 315000
  • Received:2023-02-15 Revised:2023-04-29 Online:2024-01-17 Published:2024-01-17

Abstract:

In order to understand the toxic effects of commonly used biopesticides or insecticides (zhongshengmycin, chlorantraniliprole-thiamethoxam, Zn thiazole and validamycin A) in rice field, semi-static acute toxicity test for aquatic organism was conducted on juvenile red claw crayfish (about 4 cm). The results showed that 96 h semi-lethal concentration of the four pesticides against juvenile red claw crayfish were 19.66 mg/L, 1.65 mg/L, 1132.83 mg/L and 2092.07 mg/L, respectively. The safe concentrations were 5.65 mg/L, 1.27 mg/L, 260.40 mg/L and 248.11 mg/L respectively. According to the results of behavior and tolerance, the toxicity of the four pesticides to the juvenile red claw crayfish were in the order of chlorantraniliprole-thiamethoxam> zhongshengmycin> validamycin A> Zn thiazole. Furthermore, in accordance with the national standard (GB/T16310.5-1996), Zn thiazole and validamycin A were non-toxic pesticides, zhongshengmycin was slightly toxic, and chlorantraniliprole-thiamethoxam was medium toxic pesticide for juvenile red claw crayfish. This research defined the tolerance of juvenile red claw crayfish to four major pesticides used in rice. It was expected to provide reference for disease control in the process of co-culture of rice and red claw crayfish.

Key words: red claw crayfish, co-culture of rice and red claw crayfish, tolerance, zhongshengmycin, chlorantraniliprole-thiamethoxam, Zn thiazole, validamycin A