منابع مشابه
DDT resistance in flies carries no cost
Mutations that confer pesticide resistance are predicted to carry a cost in the absence of pesticide and consequently not to spread to fixation [1,2]. However, DDT resistance in Drosophila melanogaster (DDT-R) is approaching fixation globally, long after withdrawl of DDT [3]. There are two possible explanations for this. First, other insecticides, to which DDT-R confers cross-resistance [4], ma...
متن کاملSustainable Notebooks: Who Carries the Cost?
The portable computer or notebook has become an integral and even essential aspect of modern life. Year-in-year its price to the consumer falls while its performance grows, yet recent analysis suggest that pound-for-pound its environmental costs are amongst the highest of any product on the planet. In this paper we explore the market price of “sustainable” notebooks. Drawing on the framework of...
متن کاملSkeletal muscle lipid flux: running water carries no poison.
Lipids are the most abundant organic constituents in many humans. The rise in obesity prevalence has prompted a need for a more refined understanding of the effects of lipid molecules on cell physiology. In skeletal muscle, deposition of lipids can be associated with insulin resistance that contributes to the development of diabetes. Here, we review the evidence that muscle cells are equipped w...
متن کاملresistance of anopheles sacharovi favre to ddt
a.sacharovi, which is one of the main malaria vectors of the palearchic region, is resistant to ddt in greece (1949), lebanon (1954), turkey (1959), syria and the u.s.s.r. (1972).the first record of a. sacharovi resistance to ddt in iran was given in 1959 from the kazeroon area, followed by izeh (1969) and meshkin-shahr (1970).this study (1973) urgently advises speedy measures to eliminate the ...
متن کاملResistance of microbial populations in DDT-contaminated and uncontaminated soils
One DDT-contaminated soil and two uncontaminated soils were used to enumerate DDT-resistant microbes (bacteria, actinomycetes and fungi) by using soil dilution agar plates in media either with 150 mg DDT ml−1 or without DDT at different temperatures (25, 37 and 55◦C). Microbial populations in this study were significantly (p<0.001) affected by DDT in the growth medium. However, the numbers of m...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2005
ISSN: 0960-9822
DOI: 10.1016/j.cub.2005.07.054