| [identification of nam dinh virus in china]. | during 2009-2012, the nam dinh virus (ndiv) was detected from the samples of culex pipiens quinquefasciatus in shenzhen china. in this study, cell culture,sybr green i based real time rt-pcr and rt-pcr were performed to analyze the cell susceptibility and other biological characteristics of the ndiv isolates. the results showed that c6/36 cell line was susceptible to four isolates of culex pipiens quinquefasciatus. the "s" type amplification curve and specific melting curve were obtained in the ... | 2013 | 23547372 |
| appearance and sweep of a gene duplication: adaptive response and potential for new functions in the mosquito culex pipiens. | evolution of a new gene function is a fundamental process of adaptation. gene duplication followed by divergence due to relaxed selection on redundant copies has been viewed as the predominant mechanism involved in this process. at a macroevolutionary scale, evidence for this scenario came from the analysis of sequences of genes families. however, even if several genetic models have described the different potential microevolutionary scenario for a new function to evolve, little is really known ... | 1998 | 28565319 |
| evolution of resistance in culex pipiens: allele replacement and changing environment. | fixation of adaptive mutations in populations is often constrained by pleiotropic fitness costs. the evolutionary pathways that compensate such fitness disadvantages are either the occurrence of modifier genes or replacement of the adaptive allele by less costly ones. in this context, 23 years of evolution of insecticide resistance genes in the mosquito culex pipiens from southern france are analyzed. the aim of this study is to answer the following points. is there a fitness cost associated wit ... | 1998 | 28568346 |
| population structure and dynamics of selected genes in the mosquito culex pipiens. | to determine the outcome of the combined effects of gene flow, genetic drift, and selection on the evolution of insecticide-resistance genes in the mosquito culex pipiens, samples were collected along three transects crossing treated and nontreated areas in northern spain and southern france. electrophoretic polymorphisms of five presumably neutral genes disclosed that differentiation among samples was low, and that both wright f-statistics and slatkin private-alleles methods provided a high est ... | 1995 | 28564881 |