| application of deltamethrin-impregnated bednets for mosquito and malaria control in yunnan, china. | the results of research in china in recent years show that: 1) different laboratory sensitivity of adult anopheles minimus, an. sinensis and culex pipiens quinquefasciatus to deltamethrin exist in yunnan. although the range and duration for the use of permethrin and deltamethrin was limited, resistance of an. minimus, an. sinensis and cx. pipiens quinquefasciatus to different extent in some areas existed. 2) on walls built with cement and covered with a thin layer of lime on which deltamethrin a ... | 1996 | 9280005 |
| amplified esterases b1 and a2-b2 in field populations of culex pipiens from china. | the main organophosphate (op) resistance mechanism in the culex pipiens complex is increased activity of esterases a and b. fourth-stage larvae from 2 field populations of c. pipiens from gaomi and kunming, china, were compared for tolerance to parathion, dichlorovos (op), and bassa (carbamate) insecticides. both populations were resistant to ops but not to bassa. starch gel electrophoresis indicated that elevated esterase activity was correlated with op resistance. high frequencies of amplified ... | 2000 | 10901638 |
| [genetic diversity of isoenzyme in culex pipiens complex field populations sampling from distinct area of china]. | eight field populations of culex pipiens complex collected from five provinces (guangdong, henan, shandong, beijing and yunnan) in 2001 were used to study genetic diversity by starch gel electrophoresis. data from seven loci (me,mdh-1,mdh-2,mdh-3,gpd,est-2,est-3) of four isozymes were analyzed by software biosys2.0 and fstat(version 2.9.3). the results were as follows: (1) the values of he (from 0.098 to 0.41) indicated genetic variabilities of different degree in populations.(2)the low level of ... | 2004 | 15639982 |
| distribution of arboviruses and mosquitoes in northwestern yunnan province, china. | from july to september in 2005 and 2006, a survey was conducted to identify mosquito species and mosquito-borne arboviruses at elevations ranging from 900-3280 m between 24 degrees 00' n and 29 degrees 00' n latitude in the northwestern part of yunnan province, china. a total of 54,879 mosquitoes representing 15 species and 4 genera was collected using uv light traps at 59 sites. culex tritaeniorhynchus and anopheles sinensis were the most abundant species. the density of mosquitoes as well as t ... | 2009 | 19196130 |