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Resistance development in mosquito larvae Culex pipiens to the bacterial agent Bacillus thuringiensis var. israelensis
Author(s) -
Saleh M. S.,
ElMeniawi F. A.,
Kelada N. L.,
Zahran H. M.
Publication year - 2003
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1046/j.1439-0418.2003.00703.x
Subject(s) - biology , culex pipiens , bacillus thuringiensis , larva , culex , longevity , bacillales , microbiology and biotechnology , veterinary medicine , botany , bacteria , genetics , medicine , bacillus subtilis
Mosquito larvae of Culex pipiens were subjected repeatedly to selection pressure with the bacterial agent Bacillus thuringiensis var. israelensis ( B.t.i .) in the laboratory. Only 2.78‐fold increase in tolerance to B.t.i . was induced in C. pipiens as a result of 20 generations of selection. The tolerance of C. pipiens to B.t.i . decreased by about 58% after stopping the selection for three generations. Larval selection with B.t.i. caused a reduction in the reproductive potential of mosquito adult survivors but did not affect the adult longevity and the time of blood meal digestion ingested by female mosquitoes.