Journal of Entomological Research

SCOPUSWeb of Science
  • Year: 2019
  • Volume: 43
  • Issue: 2

Compensation of kinoprene effect on reproduction of Culex pipiens by methoxyfenozide, an ecdysone agonist

Laboratory of Aquatic and Terrestrial Ecosystems, Department of Biology, Faculty of Nature and Life Sciences, Mohamed Chérif Messaadia University, 41000, Souk-Ahras, Algeria

1Laboratory of Applied Animal Biology, Faculty of Sciences, Department of Biology, Badji Mokhtar University, 23000, Annaba, Algeria; E-mail: noureddine.soltani@univ-annaba.org

Abstract

In the present study, sublethal effects of two IGDs: a juvenile hormone analog kinoprene (LC50) used alone or in combination with an ecdysone agonist; methoxyfenozide (LC20) against Culex pipiens L. (Diptera: Culicidae) have been investigated. The success of emergence, sex ratio and fecundity of surviving adults from treated newly exuviated fourth instar larvae were discussed. The different morphological aberrations induced by treatments were also mentioned. A significant reduction of the success of emergence was observed only with kinoprene. The sex ratio was also affected by kinoprene and the females seemed more sensitive to treatments than the males. The fecundity of Cx. pipiens was also reduced by kinoprene. Interestingly, methoxyfenozide seemed to compensate the depressive effects induced by kinoprene.

Keywords

Fecundity, insect growth disruptors, kinoprene, methoxyfenozide, mosquitoes, sex ratio