| evolution of resistance under insecticide selection pressure in culex pipiens quinquefasciatus (diptera, culicidae) from martinique. | population surveys of culex pipiens quinquefasciatus carried out in 1991 and 1999 were compared with data collected in 1990 before the beginning of the control program against this mosquito. larval samples collected in 1999 displayed resistance to the four tested insecticides: permethrin, propoxur, temephos, and chlorpyrifos. temephos resistance ratio at lc50 (rr50) ranged between 8.1- and 42-fold compared with 2.9- and 4.6-fold in 1990, and chlorpyrifos rr50 ranged between 8.6- and 123-fold com ... | 2004 | 15311466 |
| [control of mosquitos in martinique. a collective public health action and improvement of the quality of life]. | aedes aegypti control program in martinique started en 1968. the aedes aegypti major breeding sites are associated with flowers vases, drums, used tyres, artificial containers and watering places. however, culex quinquefasciatus is the main nuisance mosquito in all the island. this species is unpleasant, especially in urban areas. over 200 culex quinquefasciatus bites per person per night have been observed in several localities of the island. culex quinquefasciatus breeding sites are mostly ass ... | 1996 | 8924774 |
| resistance to organophosphorous insecticides in culex pipiens quinquefasciatus (diptera: culicidae) from martinique. | before beginning a widespread control program against culex pipiens quinquefasciatus in martinique, resistance to temephos, chlorpyrifos, and two organophosphorous insecticides, was investigated at seven breeding sites. at lc95, populations exhibited resistance ratios between 6.9 and 11.6 for temephos and between 6.4 and 51.4 for chlorpyrifos. overproduced esterases a2-b2 and b1, known to be involved in organophosphorous-resistance, were present at all breeding sites; esterases a2-b2 frequency w ... | 1995 | 7541837 |