| landscape-level patterns of mercury contamination of fish in north texas, usa. | mercury (hg) is a toxic metal that is found in aquatic food webs and is hazardous to humans. an emerging conceptual model predicts that the areas of the landscape that have the potential to contain food webs with elevated concentrations of hg are those that receive high amounts of hg and sulfate deposition and have high coverage of forests and wetlands and low coverage of agriculture. the objective of the present study was to test this conceptual model using concentrations of hg in largemouth ba ... | 2011 | 21647946 |
| the effects of largemouth bass virus on a quality largemouth bass population in arkansas. | a 22.4-ha impoundment experienced an outbreak of largemouth bass (micropterus salmoides) virus (lmbv) disease in the summer of 2006. all dead or dying largemouth bass observed throughout the entire event were recorded and removed. in this study, we estimated mortality and examined size distribution, condition, and biomass following the outbreak. boat-mounted electrofishing was used to collect largemouth bass for a mark-recapture population estimate and other population metrics. fish samples were ... | 2009 | 19617487 |
| expression of hepatic metallothionein messenger rna in feral and caged fish species correlates with muscle mercury levels. | metallothioneins (mts) are low-molecular-weight cytosolic proteins that are induced by cellular stress as well as exposure to various heavy metals including mercury. excessive residues of mercury have recently been identified in various fish species of the lower ouachita river system in arkansas. fillets of mature largemouth bass (micropterus salmoides) collected from woodard lake, an ox-bow lake of the ouachita river, possessed muscle residues of mercury ranging from 0.3 to 1.0 ppm (micrograms/ ... | 1995 | 7498068 |