Synergistic effect of certain insecticides combined with Bacillus thuringiensison mosquito larvae

C. P. Narkhede, C. D. Patil, R. K. Suryawanshi, S. H. Koli, B. V. Mohite, S. V. Patil

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

For effective vector control it is essential to formulate new preparations having multiple action against the vector pest. Developing combined formulation of biopesticide and chemical pesticide is one of the novel concept to fight against the vectors with new weapons; however, compatibility of biopesticide i.e. Bacillus thuringiensis (Bt) and chemical pesticide is a real hurdle. In this investigation, local isolate Bacillus thuringiensis SV2 (BtSV2) was tested for its compatibility with various available mosquito larvicides. Temephos was most compatible with BtSV2 than with other tested pesticides. These two compatible agents were tested for larvicidal potential. Our study revealed that the synergistic effect of both agents reduces LC50 value by 30.68 and 22.36% against the Ae. aegypti and An. stephensi, respectively. The larvicidal potential increased when compared to individual pesticides. It was also observed a biochemical change in larvae after the TBT (Temephos + Bacillus thuringiensis) combination treatment; it involves decreased level of alpha esterase, acetylcholine esterase and protein while level of beta esterase and acid phosphatase was unchanged and alkaline phosphatase activity was increased. Increased potential of combined formulation may be due to altered physiological condition.

Original languageEnglish
Pages (from-to)22-27
Number of pages6
JournalJournal of Entomological and Acarological Research
Volume49
Issue number1
DOIs
StatePublished - 1 Jan 2017
Externally publishedYes

Keywords

  • Bacillus thuringiensis (Bt)
  • Combination
  • Esterase
  • Larvicidal
  • Protease
  • Temephos

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Insect Science

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