Mercury content in muscles of fish of the Selenga River and lakes of its basin (Russia)

Komov, V. T.; Pronin, N. M.; Mendsaikhan, Bud

doi:10.1134/s1995082914020059

Cited by 17 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Currently, there are different views regarding their impact on Lake Baikal itself (Chebykin et al 2010;Pavlov et al 2008). However, bioaccumulation and toxicological effects observed in aquatic biota ranging from insects to fish provide indication that water quality deterioration in the Selenga river system does have an ecological impact (Avlyush 2011;Kaus et al 2016;Komov et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Environmental change in the Selenga River—Lake Baikal Basin

2017

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Environmental change in the Selenga River—Lake Baikal Basin

2017

View full text Add to dashboard Cite

“…Arsenic was found to be extremely elevated in the liver of L. lota compared to the other species investigated, which was also the case for L. lota in the Danube River, Serbia (Subotić et al 2013), and from the Taimyr Peninsula in Russia (Allen-Gil et al 2003). KRB L. lota As liver contents (median = 1.2 lg g -1 ww, mean = 0.99 ± 0.56 lg g -1 ww, n = 11) were 4.6 and 3.5 times higher than the mean As liver contents from this species in the Danube River (*0.212 lg g -1 ww) and the Taimyr Peninsula (*0.28 lg g -1 ww), respectively, once dry weights were adjusted to wet weights (see Komov et al 2014;Haines et al 1992). According to the modelling results, As accumulation in L. lota was complex, with all variables and interactions significant, except for tissue/age.…”

Section: Discussionmentioning

confidence: 99%

“…This has evidently happened with regard to the high S. asotus Hg content in the KRB, and has likewise occured in the lower Selenga River basin near Lake Baikal, where S. asotus accumulated the highest Hg muscle content of the 13 fish species investigated there. S. asotus recorded a mean Hg muscle content of *0.216 lg g -1 wet weight (ww) (1.08 lg g -1 dry weight, dw; Komov et al 2014;Haines et al 1992), which was 2.4 times lower than KRB S. asotus (mean = 0.52 ± 0.43 lg g -1 ww, median = 0.65 lg g -1 ww, n = 3). In addition, a related catfish species (Silurus glanis) in the Danube River, Serbia, also accumulated the highest Hg content of the four fish species investigated in that study, recording a mean Hg muscle Table 2 Summary table of sampled species displaying sample content of *0.326 lg g -1 ww (Subotić et al 2013), although this was also less than the Hg detected in KRB S. asotus.…”

Section: Discussionmentioning

confidence: 99%

Regional patterns of heavy metal exposure and contamination in the fish fauna of the Kharaa River basin (Mongolia)

et al. 2016

View full text Add to dashboard Cite

Past and present gold mining operations scattered throughout the Kharaa River basin, Mongolia, have been identified as a major source of heavy metal and metalloid contamination. However, the potential accumulation of toxic contaminates including Cr, Zn, As, Cd, Hg, Cu, Ni and Pb in the resident fish fauna and the subsequent human health risks associated with their consumption have previously not been quantified. In the current study, contaminates in water, sediment and five consumed fish species (Leuciscus baicalensis, Thymallus baicalensis, Brachymystax lenok, Lota lota and Silurus asotus) were examined. The results indicated that concentrations of As and Hg exceeded the national permissible limits for drinking water in the Gatsuurt tributary of 10 lg L -1 and 0.05 lg L -1 respectively, while Hg contents detected in the sediment of the Boroo tributary were highly elevated (0.78 lg g -1 ). Heavy metal and arsenic accumulation was evident in all five fish species sampled across the basin, with maximum muscle contents of Cr, As, Hg and Pb detected in several species caught in the middle and lower river reaches, while Zn was highly elevated in B. lenok collected in the upper tributaries. Elevated median contents of Cr, Cu, Hg and Pb increased with trophic level, with Hg accumulation posing the greatest threat to humans as 10.7 % of all fish sampled in the study exceeded the internationally recommended threshold for Hg in consumable fish tissue. Although recreational fishing is rapidly growing throughout Mongolia, the overall level of fish capture and consumption remains relatively low. However, increasing pollution and accumulation in resident fish species could lead to chronic heavy metal intoxication in people who consume them regularly from the most polluted regions of the basin, while additionally being exposed to other sources of contamination.

show abstract

“…As a consequence of mining, elevated levels of heavy metals and other mining-related pollutants have been detected in the water and sediments of the Selenga River and its tributaries, as well as floodplain soils and groundwater Brumbaugh et al 2013;Chalov et al 2015;Inam et al 2011;Karthe et al 2017;Nadmitov et al 2014;Pavlov et al 2008;Thorslund et al 2012). Moreover, bioaccumulation and toxicological effects observed in aquatic biota ranging from insects to fish have been documented (Avlyush 2011; Kaus et al 2016b;Komov et al 2014). Different sources of evidence suggest that smallscale gold mining is particularly problematic and some regions suffer from legacy contamination with heavy metals (Kaus et al 2016b).…”

Section: Water Quality and Aquatic/riparian Ecologymentioning

confidence: 99%

Water in Central Asia: an integrated assessment for science-based management

et al. 2017

View full text Add to dashboard Cite

Central Asia contains one of the largest internal drainage basins in the world, and its continental location results in limited availability of both surface and groundwater. Since the twentieth century, water resources of the region have been exploited beyond sustainable levels. From small Mongolian headwater streams to the mighty Aral Sea, surface waters have been partially desiccated. Demands from the agricultural, energy and raw material sectors as well as population growth have not only increased water abstractions, but also left a diverse and strong pollution footprint on rivers, lakes and groundwater bodies. Such changes in water quantity and quality have not only led to a degradation of aquatic and riparian ecosystems, but also they have placed the region's socioeconomic development at risk. Because of the complexity of Central Asia's water problems, integrated assessment and management approaches are required. Despite some shortcomings in practical implementation, the widespread adoption of the Integrated Water Resources Management and water-food-energy nexus approaches may be keys to a more sustainable future. This thematic issue aims to provide documentation of the current state of scientific knowledge, ranging from hydrological research to water quality investigations, and offers an assessment of ecosystems and the services provided by them. Reviews and case studies on different management options conclude the thematic issue by providing insights into field-tested solutions for the region's water challenges.

show abstract

Mercury content in muscles of fish of the Selenga River and lakes of its basin (Russia)

Cited by 17 publications

References 10 publications

Environmental change in the Selenga River—Lake Baikal Basin

Environmental change in the Selenga River—Lake Baikal Basin

Regional patterns of heavy metal exposure and contamination in the fish fauna of the Kharaa River basin (Mongolia)

Water in Central Asia: an integrated assessment for science-based management

Contact Info

Product

Resources

About