Effect of Lagenidium giganteum on the Growth of Culex pipiens quinquefascitus Larva

Objective:Studying the effect of Lagenidium giganteum (L.g.) on the growth of Culex pipiens quinquefascitus larvae. Methods: Four characteristics of weight,body length,instar and death rate of larval mosquito were examined, and then a comparasion was made between the control and the treated groups in different treating stages. Results: No obvious difference was shown for the first stage(zero hour after being treated),but the treated groups had much less weight and body length than the control and were accompanied by a delayed development of instar and much higher death rate; all the treated larvae of instar 4 would die before developing into pupae. Conclusion: L.g. exerts a great effect on the growth of Culex pipiens quinquefascitus larvae.