| laboratory evaluation of selected larvicides and insect growth regulators against field-collected culex quinquefasciatus larvae from urban dhaka, bangladesh. | five organophosphates (ops) (chlorpyrifos, chlorpyrifos methyl, fenthion, malathion, and temephos), 3 pyrethroids (bifenthrin, cypermethrin, and permethrin), 1 phenyl pyrazole (fipronil), 2 microbial pesticides (bacillus thuringiensis serovar. israelensis [b.t.i.] and bacillus sphaericus), and 3 insect growth regulators (igrs) (diflubenzuron, methoprene, and pyriproxyfen) were evaluated against field-collected culex quinquefasciatus larvae from urban dhaka, bangladesh. the lc90 values of all ops ... | 1999 | 10342267 |