"behaviour changes in permethrin-resistant strain of anopheles stephensi "
نویسندگان
چکیده
behaviour studies indicated that the permethrin resistant strin of an. stephensi was 3-fold resistant to knock-down compared with the susceptible strain. the resistant strain was however 3-fold less irritable to permethrin and less responsive than the susceptible strain to the movement of an aspirator. if reduced irritability and reduced responsiveness to catch are consequences of the changes in the nervous system, then such a form of resistance may be disadvantageous to mosquitoes in natural populations.
منابع مشابه
Genetics of resistance to permethrin in Anopheles stephensi.
Pyrethroid resistance has been viewed as a very serious threat to the future of malaria vector control1. However, recently two contrasting outcomes have been reported where resistance has been reported in Anopheles malaria vectors. In West Africa a high frequency of the kdr gene in Anopheles gambiae has not prevented good results with pyrethroid treated bednets in laboratory simulations2, in ex...
متن کاملStudy of irritant effect of permethrin impregnated nets on pyrethroid resistant and susceptible genotypes of the mosquito anopheles stephensi
pyrethroid-impregnated bednets have been shown to be one of the most promising tools that have emerged in recent years to control malaria.mosquito may be physically irritated by pyrethroid reducing the time searching for blood meals,or driving them away.permethrin impregnated nets also may deter a proportion of mosquitoes from entering houses.irritant effect of nets treated with 200 mg and 500...
متن کاملan electrophyiological investingation of target site insesitivity in permethrn-resistant and susceptible strain of anopheles stephensi
it was shown that permethrin resistance in adult anopheles stephensi is due to at least three separate mechanisms. cytochrome p-450s and esterases are responsible for two-thirds of the 8-fold enhanced tolerance of the dub-apr resistant strain as compared with a sensitive strain, ind-s. it was postulated that target site insensitivity is also involved. to test this hypothesis, we conducted a neu...
متن کاملan enhanced tolerance to permethrin in anopheles stephensi with permethrin and otherenzyme inducers
pretreatment of adults of iraq strain of afhstephenst with a sub-letlial dose of pcrmethrin resulted in a 65% enliancemenl of tolerance to this insecticide. similarly, pre-exposure of dub-lpr larvae to a sub-lethal dose of pcrmethrin resulted in increased tolerance to pcrmethrin. for the sensitive ind-s strain, the inductive effect was smaller. tiie results of bioassays of resistant and suscept...
متن کامل"laboratory experiments on the irritability of anopheles atroparvus and anopheles stephensi to ddt "
two strains of anopheles atroparvus, one resistant and another sceptible to ddt and two of anopheles stephensi, one resistant and one susceptible to ddt were tested for their irritability to ddt. various laboratory investigations of the effects of insecticides on mosquito behavior and their irritability were carried out. in these series of experiments a comparison was made between the results o...
متن کاملpermethrin selection on the adults of anopheles stephensi from south or iran
a wild strain of anopheles stephensi liston (ban-pr), originating from bandar-abbas, south of iran, was submitted to selection with permethin at the adult stage. ten successive generations of permethrin selection on the adults resulted in only 2.2 fold increase in tolerance. crossing experiments on the selected and unselected strains indicated that the gene/genes for observed tolerance is inher...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
acta medica iranicaجلد ۳۸، شماره ۲، صفحات ۱۰۵-۱۱۰
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023