【摘要】 台湾泥鳅是稻鱼综合种养中常见的养鱼品种。为确定真菌杀虫剂金龟子绿僵菌CQMa421对台湾泥鳅的安全浓度，本研究进行金龟子绿僵菌CQMa421对台湾泥鳅的急性毒性试验。结果表明，金龟子绿僵菌CQMa421对台湾泥鳅的24 h半致死浓度（LC50）为93.79 mg/L,48、72 h和96 h的半致死浓度均为86.24 mg/L，金龟子绿僵菌CQMa421对台湾泥鳅的毒性可评价为低毒；安全浓度为21.87 mg/L，该安全浓度远高于金龟子绿僵菌CQMa421在水稻上施用的有效杀虫用量。本研究结果初步确定金龟子绿僵菌CQMa421在稻鳅综合种养中可以作为水稻生产的杀虫剂安全使用。更多还原

【Abstract】 Paramisgurnus dabryanus spp is a common fish breed in the comprehensive rice-fish cultivation.In order to determine the safe concentration of the fungal insecticide Metarhizium Anisopliae CQMa421 on Paramisgurnus dabryanus spp,we carried out the acute toxicity test of Metarhizium Anisopliae CQMa421 on Paramisgurnus dabryanus spp.The results showed that the half lethal concentration(LC50)of Metarhizium Anisopliae CQMa421 to Paramisgurnus dabryanus spp was 93.79 mg/L at 24 h,and 86.24 mg/L at 48,72 h and 96 h. The toxicity of Metarhizium Anisopliae CQMa421 to Paramisgurnus dabryanus spp. could be evaluated as“low toxic”.The safe concentration is 21.87 mg/L,which is much higher than the effective insecticidal dosage of Metarhizium Anisopliae CQMa421 applied on paddy rice.The results of this study confirmed preliminarily that Metarhizium Anisopliae CQMa421 could be used safely as a pesticide for rice production in the integrated rice-loach cultivation.更多还原