Prakash Soam
Environmental Parasitology Laboratory, Department of Zoology, Dayalbagh Educational Institute, Dayalbagh, Agra, 282005, India.
J Am Mosq Control Assoc. 2003 Dec;19(4):404-7.
Efficacy of fungal metabolites of Chrysosporium tropicum was evaluated against Culex quinquefasciatus larvae in the laboratory to determine their larvicidal activity at 6 concentrations, with a mortality range of 10-95%. Efficacy of C. tropicum was analyzed by probit analysis procedures. The LC50 (concentration lethal to 50% of the population) values were 38.9, 63.7, 79.0, and 122.6 microl/ml for the 1st, 2nd, 3rd, and 4th instars, respectively. The LC50 values were 79.5, 95.6, 136.9, and 174.5 microl/ml against the 1st-, 2nd-, 3rd-, and 4th-stage larvae, respectively. Lethal concentrations of fungal metabolites were significantly different among the 4 instars. The 1st-stage larvae were most susceptible, whereas 4th instars were least susceptible to C. tropicum metabolites. The larvicidal potential of C. tropicum metabolites warrants field trials against various species of mosquitoes.
在实验室中评估了热带金孢子菌的真菌代谢产物对致倦库蚊幼虫的效果，以确定其在6种浓度下的杀幼虫活性，死亡率范围为10%-95%。通过概率分析程序分析了热带金孢子菌的效果。对于第1、2、3和4龄幼虫，LC50（使50%的种群致死的浓度）值分别为38.9、63.7、79.0和122.6微升/毫升。针对第1、2、3和4阶段幼虫的LC50值分别为79.5、95.6、136.9和174.5微升/毫升。真菌代谢产物的致死浓度在4个龄期之间存在显著差异。第1阶段幼虫最敏感，而第4龄幼虫对热带金孢子菌代谢产物最不敏感。热带金孢子菌代谢产物的杀幼虫潜力值得针对各种蚊子进行田间试验。
