Sterculia guttata Roxb. As insect growth regulatory agent and its influence on developmental indices of filarial vector, Culex quinquefasciatus Say

Abstract

The extensive and repeated use of synthetic insecticides disrupted natural systems leading to resistance and resurgence in target populations and destruction of non-target beneficial fauna. The present study took an effort to contribute to control or reducing the mosquito population of Culex quinquefasciatus Say by employing different column fractions of the methanolic seed extract of Sterculia guttata Roxb. The higher dose treatments caused mortality in a dose-dependent manner and it also produced various growth inhibiting effects on the developmental stages when, exposed at lower dose treatments. MeOH: EA-4:1 column fraction of the methanol extract of S. guttata exhibited significant insect growth regulatory activities on Cx. quinquefasciatus as can be evidenced from the effective interference with the life cycle stages of the filarial vector.