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      2. 稻蝦綜合種養模式下吡蟲啉的富集與殘留消除研究
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        1.華中農業大學;2.中國水產科學研究院長江水產研究所

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        湖北省技術創新專項重大項目(2019ABA077),中國水產科學研究院基本科研業務費(2018HY-ZD0606),中央級公益性科研院所基本科研業務費課題(2019ZD0901)


        Study on Enrichment and Residual Elimination of Imidacloprid in Integrated Rice and Procambarus clarkii breeding model
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          摘要:

          本試驗為評價吡蟲啉對克氏原螯蝦的安全性,研究了吡蟲啉在克氏原鰲蝦中的富集和殘留消除情況,開展室內暴露試驗和田間殘留消除試驗,用藥的質量濃度為推薦使用的質量濃度0.2 mg/L,分別采集克氏原鰲蝦、稻田底泥和田水樣品。結果發現,室內暴露條件下吡蟲啉在克氏原鰲蝦體內的累積量大小依次為鰓組織>肌肉>血淋巴>腸道>肝胰臟。田間殘留試驗中吡蟲啉在克氏原鰲蝦體內的累積量表現為肌肉>腸道>鰓組織>血淋巴>肝胰臟,同時發現,田間試驗下施藥后28 d,吡蟲啉在克氏原鰲蝦肌肉組織中的殘留量為20.44 μg/kg,吡蟲啉在稻田水中降解率為97.54%,在底泥中的殘留量為10.94 μg/kg。所以為了避免對非靶標生物水產品-克氏原螯蝦產生危害,建議適當延長吡蟲啉在稻田中的施藥間隔期,在靠近養殖水體的稻田尤其是在稻蝦綜合種養模式下應謹慎施藥或建議使用其它替代藥物。

          Abstract:

          In this test, to evaluate the safety of imidacloprid in Procambarus clarkii, the enrichment and residue elimination of imidacloprid in Procambarus clarkii were studied. The indoor exposure test and the field residual elimination test were carried out. The mass concentration of the drug is the recommended mass concentration of 0.2 mg/L, samples of Procambarus clarkii, paddy mud and field water were collected separately. The results showed that the accumulated amount of imidacloprid in Procambarus clarkii in the order of indoor exposure was gill tissue> muscle> hemolymph> intestine> hepatopancreas. In the field residual test, the accumulation of imidacloprid in Procambarus clarkii was expressed as muscle> intestine> gill tissue> hemolymph> hepatopancreas. At the same time, it was found that 28 days after the application of the field test, imidacloprid in the muscle of Procambarus clarkii The residual amount in the tissue was 20.44 μg/kg, the degradation rate of imidacloprid in paddy field water was 97.54%, and the residual amount in the sediment was 10.94 μg/kg. Therefore, in order to avoid harm to the non-target biological aquatic product-Procambarus clarkii, it is recommended to properly extend the application interval of imidacloprid in rice fields, and it should be applied cautiously in rice fields close to the cultured water, especially in the integrated cultivation mode of rice and shrimp Or suggest the use of other alternative medicines.

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        • 收稿日期:2020-04-12
        • 最后修改日期:2020-06-02
        • 錄用日期:2020-12-11
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