英文论文的翻译.doc

Mutation Research/Genetic Toxicology and Environmental Mutagenesis Volume 608, Issue 1, 19 September 2006, Pages 8-15 doi:10.1016/j.mrgentox.2006.04.021?|? How to Cite or Link Using DOICopyright ? 2006 Elsevier B.V. All rights reserved. ?? Permissions Reprints Environmental pollution affects genetic diversity in wild bird populations Tapio Eeva a, , , Eugen Belskii b and Boris Kuranov c aSection of Ecology, University of Turku, FIN-20014, Finland bInstitute of Plant and Animal Ecology, Russian Acad. Sci., Marta Street 8, 202 Ekaterinburg 620144, Russia cFaculty of Zoology of Vertebrates and Ecology, Department of Biology and Soil Sciences, Tomsk State University, Lenin Street 36, Tomsk 634050, Russia Received 21 October 2005;? revised 17 March 2006;? accepted 7 April 2006.? Available online 23 June 2006. Abstract Many common environmental pollutants, together with nuclear radiation, are recognized as genotoxic. There is, however, very little information on pollution-related genetic effects on free-living animal populations, especially in terrestrial ecosystems. We investigated whether genetic diversity in two small insectivorous passerines, the great tit (Parus major) and the pied flycatcher (Ficedula hypoleuca), was changed near point sources of heavy metals (two copper smelters) or radioactive isotopes (nuclear material reprocessing plant). We measured concentration of heavy metals and nucleotide diversity in mitochondrial DNA in feather samples taken from nestlings in multiple polluted areas and at control sites. In both species, heavy metal concentrations – especially of arsenic – were increased in feathers collected at smelter sites. The P. major population living near a smelter showed significantly higher nucleotide diversity than a control population in an unpolluted site, suggesting increased mutation rates in a polluted environment. On the contrary, F. hypoleuca showed reduced nucleotide diversity at both smelter sites but increased