Seasonal patterns of metal accumulation in Arctic char (Salvelinus alpinus) from an oligotrophic Alpine lake related to temperature

Köck, Günter; Triendl, M.; Hofer, R.

doi:10.1139/f95-243

Cited by 105 publications

(56 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the current study, tissue concentrations in gonads were however not examined. Köck et al (1996) stated that metal uptake may be enhanced during summer as a result of increasing metabolic rates. Most significant differences recorded between surveys were concerned with metal concentrations in muscle and liver tissues.…”

Section: Discussionmentioning

confidence: 99%

“…Metallothionein, a low molecular weight protein, also plays a role in the binding and detoxification of heavy metals (Hodson, 1988;Hogstrand and Haux, 1991). It has been found that nonessential elements, on the other hand, tend to accumulate in fish year to year in a stepwise manner, since fish are not able to eliminate the metals completely (Köck et al, 1996). In fact, Sorensen (1991) states:…”

Section: Introduction Synopsismentioning

confidence: 99%

See 1 more Smart Citation

Bioaccumulation of non-essential trace metals in tissues and organs of Clarias gariepinus (sharptooth catfish) from the Vaal River system – strontium, aluminium, lead and nickel

Crafford

Avenant‐Oldewage

2010

WSA

View full text Add to dashboard Cite

This is the first paper reporting on results obtained in a metal bioaccumulation study in the Vaal River system. It discusses concentrations of four non-essential elements (strontium, aluminium, lead and nickel) in water, sediment and various fish tissues. A second paper will report on concentration levels of the remaining five essential trace metals (chrome, copper, iron, manganese and zinc) studied. While heavy metals did accumulate in C. gariepinus tissues, no clear trends emerged with regard to differences between localities (Vaal Dam and Vaal River Barrage) or surveys. The highest non-essential element metal concentrations were generally recorded in gill (filaments and arches), followed by muscle, liver and lastly skin. This general trend appears to be in agreement with trends observed by other workers and reported in the literature. Variability in tissue metal concentrations in C. gariepinus within locality and seasons observed in this study is also reflected in results from available literature. This accentuates the importance of factors that influence the concentrations and bioavailability of trace metals.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introduction Synopsismentioning

confidence: 99%

Bioaccumulation of non-essential trace metals in tissues and organs of Clarias gariepinus (sharptooth catfish) from the Vaal River system – strontium, aluminium, lead and nickel

Crafford

Avenant‐Oldewage

2010

WSA

View full text Add to dashboard Cite

show abstract

“…These pollutants build up in the food chain and are responsible for adverse effects and death in the aquatic organisms (Farkas et al 2002). Fish are widely used to evaluate the health of aquatic ecosystems and physiological changes serve as biomarkers of environmental pollution (Kock et al 1996). Nile tilapia, Oreochromis niloticus, is one of the most common freshwater fish used in toxicological studies (Figueiredo-Fernandes et al 2006a,b, Garcia-Santos et al 2006, because it present a number of characteristics that may make it an appropriate model that can be used as indicator species in biomonitoring programmes (Gadagbui et al 1996).…”

Section: Introduction Introduction Introduction Introduction Introducmentioning

confidence: 99%

Histopathological changes in liver and gill epithelium of Nile tilapia, Oreochromis niloticus, exposed to waterborne copper

et al. 2007

View full text Add to dashboard Cite

Nile tilapia, Oreochromis niloticus, of both sexes were reared in freshwater and exposed to 0.5, 1.0 and 2.5mg L-1 of waterborne copper for a period of 21 days. Liver and gill samples were collected after 21 days of exposure to copper and lesions were analyzed by light microscopy. The main histopathological changes observed in gills exposed to the highest concentration were edema, lifting of lamellar epithelia and an intense vasodilatation of the lamellar vascular axis. Although less frequent, lamellar fusion caused by the filamentar epithelium proliferation and some lamellar aneurisms were also found. The liver of control group exhibited a quite normal architecture, while the fish exposed to copper showed vacuolation and necrosis. These hepatic alterations were more evident in fish exposed to 1.0 and 2.5mg L-1 copper concentrations. The number of hepatocytes nucleus per mm² of hepatic tissue decreased with the increase of copper concentration. In contrast, the hepatic somatic index was high in fish exposed at 2.5mg L-1 of copper. In short, this work advance new knowledge as influence of copper in the gill and liver histology of O. niloticus and demonstrated that their effects could be observed at different concentrations.

show abstract

“…In freshwater fish, metal uptake and toxicity are largely influenced by the pH, ca concentration and alkalinity of the water (Alabaster and Lioyd, 1980;Wiener, 1991 andKock et al, 1996). Under acidic conditions, the free divalent ion is the dominant form of many metals, readily absorbed by fish gills (Merlini andPozzi, 1977 andPart et al, 1985), while interference of H + ions with metal uptake at the gill surface has also been proposed as the dominant mechanism for decreasing metal toxicity at acidic pH (Part et al, 1985 andCuimano et al, 1986).…”

Section: Discussionmentioning

confidence: 99%

Combined effects of water pH and alkalinity on the accumulation of lead, cadmium and chromium to Labeo rohita (Hamilton)

Adhikari

Ghosh

Ayyappan

2006

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Seasonal patterns of metal accumulation in Arctic char (Salvelinus alpinus) from an oligotrophic Alpine lake related to temperature

Cited by 105 publications

References 34 publications

Bioaccumulation of non-essential trace metals in tissues and organs of <i>Clarias gariepinus</i> (sharptooth catfish) from the Vaal River system – strontium, aluminium, lead and nickel

Bioaccumulation of non-essential trace metals in tissues and organs of <i>Clarias gariepinus</i> (sharptooth catfish) from the Vaal River system – strontium, aluminium, lead and nickel

Histopathological changes in liver and gill epithelium of Nile tilapia, Oreochromis niloticus, exposed to waterborne copper

Combined effects of water pH and alkalinity on the accumulation of lead, cadmium and chromium to Labeo rohita (Hamilton)

Contact Info

Product

Resources

About