A regression model using sediment chemistry for the evaluation of marine environmental impacts associated with salmon aquaculture cage wastes

Chou, C. L.; Haya, K.; Paon, L.A.; Moffatt, J. D.

doi:10.1016/j.marpolbul.2004.02.039

Cited by 19 publications

(15 citation statements)

References 12 publications

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“…This has been observed in both sea bream (Sparus aurata) aquaculture in the Mediterranean and Atlantic salmon aquaculture (Salmo salar) in Canada and Scotland (Chou et al, 2004;Mendiguchia et al, 2006;Dean et al, 2007). Sediment accumulation of Cu and Zn is largely due to the deposition of metal present in uneaten food and faeces and Cu levels of over 800 mgKg -1 , which considerably exceed the amount at which ecological effects may be predicted (Long et al, 1998), can be detected in the vicinity of fish cages (Dean et al, 2007).…”

Section: Introductionmentioning

confidence: 96%

Copper transporter 1, metallothionein and glutathione reductase genes are differentially expressed in tissues of sea bream (Sparus aurata) after exposure to dietary or waterborne copper

Minghetti

Leaver

Carpenè

et al. 2008

Comparative Biochemistry and Physiology Part C: Toxicology &

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The high affinity copper transporter 1 (Ctr1), metallothionein (MT) and glutathione reductase (GR) are essential for copper uptake, sequestration and defense respectively. Cu-exposure increased Ctr1 mRNA levels in the intestine and the kidney compared to experimental controls. Excess dietary Cu exposure had no effect on levels of metallothionein (MT) mRNA, and the only effect of dietary excess Cu on glutathione reductase (GR) mRNA was a decrease in the intestine. Both MT mRNA and GR were increased in the liver and gill after waterborne Cu exposure, compared to levels in fish fed experimental control low Cu diets. Thus, Ctr1, MT and GR mRNA expression in response to excess Cu is dependent on the route of exposure. Furthermore, the tissue expression profile of sea bream Ctr1 is consistent with the known physiology of copper exposure in fish and indicates a role both in essential copper uptake and in avoidance of excess dietary and waterborne copper influx.

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Section: Introductionmentioning

confidence: 96%

Copper transporter 1, metallothionein and glutathione reductase genes are differentially expressed in tissues of sea bream (Sparus aurata) after exposure to dietary or waterborne copper

Minghetti

Leaver

Carpenè

et al. 2008

Comparative Biochemistry and Physiology Part C: Toxicology &

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“…Of the metals present in fish farm sediments, elevated concentrations of zinc and copper have been reported in Scotland (Saving seabirds and conserving fish stocks-restrictions on industrial fishing: http:// www.scotland.gov.uk/news/1999/12/se1670.asp, accessed 13 June 2006), Canada [25] and USA [26]. The concentration of heavy metals in the Uranouchi Inlet is much higher than their average background level in Japanese river sediments, which was found to be 27.7 mg/kg dry wt for Cu, 17 mg/kg dry wt for Pb, and 121.9 mg/kg dry wt for Zn [27,28].…”

Section: Discussionmentioning

confidence: 99%

“…The increasing sediment Cu in degraded conditions as seen at the aquaculture stations is not surprising. Cu is known to bind tightly with organic material and a high concentration factor is expected, especially in the presence of high organic carbon concentrations [26]. The aquaculture feeds contain much lower concentrations of Fe, Mn, and aluminium (Al), which are at microgram per gram levels while the background sediments contain percent (%) levels.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of heavy metals in the sediments of Uranouchi Inlet, Kochi prefecture, Japan

Fukami

Iwasaki

et al. 2009

Fish Sci

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The present status of contamination by heavy metals, and the impact of cage culture on sediments at the Uranouchi Inlet, Kochi Prefecture, Japan, were investigated from two stations influenced by intensive aquaculture and a control station, during May-July 2006. The moisture content of the sediments at the aquaculture stations was over 65%, and the organic matter was always over 100 mg/g dry wt. In contrast, the highest moisture content and organic matter at the control station was 45.5% and 62.9 mg/g dry wt, respectively. Concentrations of zinc (Zn) (178 ± 4.8 mg/kg dry wt) and copper (Cu) (125 ± 1.2 mg/kg dry wt) were highest at the aquaculture stations. Lead (Pb) was highest (50.7 ± 0.77 mg/kg dry wt) at the aquaculture station though it was as high as 33.2 ± 0.77 mg/kg dry wt at the control station. One-way ANOVA showed that the differences in concentrations of Zn and Cu in sediments from the aquaculture and control stations were highly significant (P = 0.01), whereas Pb showed no such trend. Occurrence of a large fraction of labile Zn (56.1%) and Cu (40.3%) in these sediments warrants attention. Although factors other than metals may explain the distribution observed, the information presented here may be useful in predicting long-term effects of heavy metal contamination from aquaculture in the marine environment.

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“…In parallel to these recommendations, many scientific papers have proposed in the two last decades mathematical models to explain and forecast the waste emission processes and effects produced by aquaculture installations (Gillibrand and Turrel, 1997;Cromey et al, 1998Cromey et al, , 2002Carroll et al, 2004;Stigebrandt et al, 2004;Chou et al, 2004;Aguado-Gim enez and García-García (2004); Machias et al, 2006;Holmer et al, 2008;Borja et al, 2009;Cromey et al, 2009). In general terms, these models are based on equations that take into account the volume of emissions from aquaculture farms, and their dispersion and impact on the marine environment.…”

Section: Introductionmentioning

confidence: 99%

Bioeconomic analysis of the environmental impact of a marine fish farm

Rabassó

Hernández

2015

Journal of Environmental Management

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A regression model using sediment chemistry for the evaluation of marine environmental impacts associated with salmon aquaculture cage wastes

Cited by 19 publications

References 12 publications

Copper transporter 1, metallothionein and glutathione reductase genes are differentially expressed in tissues of sea bream (Sparus aurata) after exposure to dietary or waterborne copper

Copper transporter 1, metallothionein and glutathione reductase genes are differentially expressed in tissues of sea bream (Sparus aurata) after exposure to dietary or waterborne copper

Occurrence of heavy metals in the sediments of Uranouchi Inlet, Kochi prefecture, Japan

Bioeconomic analysis of the environmental impact of a marine fish farm

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