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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Santos, Eduarda M. Hamilton, Patrick B. Coe, Tobias S. Ball, Jonathan S. Cook, Alastair C. Katsiadaki, Ioanna Tyler, Charles R. |
| Spatial Coverage | England |
| Description | Author Affiliation: Santos EM ( Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK. Electronic address: e.santos@exeter.ac.uk.) |
| Abstract | Pollution is a significant environmental pressure on fish populations in both freshwater and marine environments. Populations subjected to chronic exposure to pollutants can experience impacts ranging from altered reproductive capacity to changes in population genetic structure. Few studies, however, have examined the reproductive vigor of individuals within populations inhabiting environments characterized by chronic pollution. In this study we undertook an analysis of populations of three-spined sticklebacks (Gasterosteus aculeatus) from polluted sites, to determine levels of genetic diversity, assess for evidence of historic population genetic bottlenecks and determine the reproductive competitiveness of males from these locations. The sites chosen included locations in the River Aire, the River Tees and the River Birket, English rivers that have been impacted by pollution from industrial and/or domestic effluents for over 100 years. Male reproductive competitiveness was determined via competitive breeding experiments with males and females derived from a clean water site, employing DNA microsatellites to determine parentage outcome. Populations of stickleback collected from the three historically polluted sites showed evidence of recent population bottlenecks, although only the River Aire population showed low genetic diversity. In contrast, fish collected from two relatively unpolluted sites within the River Gowy and Houghton Springs showed weak, or no evidence of such bottlenecks. Nevertheless, males derived from polluted sites were able to reproduce successfully in competition with males derived from clean water exposures, indicating that these bottlenecks have not resulted in any substantial loss of reproductive fitness in males. |
| File Format | HTM / HTML |
| ISSN | 0166445X |
| Volume Number | 142-143 |
| e-ISSN | 18791514 |
| Journal | Aquatic Toxicology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-10-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Toxicology Genetic Variation Drug Effects Reproduction Rivers Smegmamorpha Physiology Water Pollutants, Chemical Toxicity Animals Breeding England Female Male Population Dynamics Genetics Analysis Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Aquatic Science |
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