Aquaculture-related trace metals in sediments and lobsters and relevance to environmental monitoring program ratings for near-field effects

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

doi:10.1016/s0025-326x(02)00219-9

Cited by 79 publications

(47 citation statements)

References 9 publications

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“…Elements such as Cu, Cd, Zn, or Pb in sediments surrounding aquaculture sites are often linked to OM and used as aquaculture markers (Chou et al, 2002;Mendiguchía et al, 2006). In our study, Zn and Cd were the only metals whose concentrations were negatively correlated to distance to cage, and tended toward a correlation with OM (P = 0.0769 and 0.124 for Zn and Cd, respectively).…”

Section: Metals and Other Elementsmentioning

confidence: 48%

“…These differences could be due to current directions on the treatment days; pyrethroid bath treatments (with well boats or tarp usage) were likely administered such that dispersion resulted in accumulation on one side of the site. At some salmon farms, concentrations of Cu and Zn in sediment below cages range between 48 and 150 mg·kg −1 (ppm) dry weight for Cu, and can be as high as 400 mg·kg −1 (ppm) for Zn (Debourg et al, 1993;Burridge et al, 1999;Chou et al, 2002;Brooks and Mahnken, 2003). The Cu values measured at our fallowed site ranged between 27.40 and 64.00 ppm, close to what has been measured in active farms elsewhere and at our production site (39.3-66.0).…”

Section: Metals and Other Elementsmentioning

confidence: 99%

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Measurement of Aquaculture Chemotherapeutants in Flocculent Matter Collected at a Hard-Bottom Dominated Finfish Site on the South Coast of Newfoundland (Canada) After 2 Years of Fallow

et al. 2018

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The expansion of aquaculture is resulting in sites being installed over a diversity of substrate types, leading to different potential chemotherapeutant degradation scenarios. There is little to no information on the biodegradation and/or persistence of chemotherapeutants at hard-bottom dominated aquaculture sites having little natural sediment. In this study, we measured organic matter (OM) content and concentrations of chemicals linked to finfish aquaculture activities (trace elements, antibiotics and parasiticides) in flocculent matter samples collected close to cages at a site fallowed for 2 years and at an active site, the latter being indicative of flocculent chemical signature during production. Our results show persistence of flocculent matter after 2 years of fallow. The chemical signature of the samples confirms that Cu, Zn, Ca, and P, present around fish cages, are direct markers of aquaculture wastes. Persistence of two pyrethroids, one avermectin, and one antibiotic in grab samples show a potentially lasting association between these chemicals and the OM from fish feed and wastes, even after 2 years. Overall, the concentrations measured do not indicate a direct lethal toxicity on marine organisms (as per studies described in literature) except for Zn. Nevertheless, the long-term persistence of a flocculent mixture rich in chemicals and the lack of information on sublethal and synergistic effects on hard-bottom communities calls for caution and additional studies.

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Section: Metals and Other Elementsmentioning

confidence: 48%

Section: Metals and Other Elementsmentioning

confidence: 99%

Measurement of Aquaculture Chemotherapeutants in Flocculent Matter Collected at a Hard-Bottom Dominated Finfish Site on the South Coast of Newfoundland (Canada) After 2 Years of Fallow

et al. 2018

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“…antifouling paints), which varies widely according to the frequency of net maintenance with antifouling paints and the hydro dynamics at each farm (Uotila 1991, Chou et al 2002, Belias et al 2003, Dean et al 2007, Basaran et al 2010, Wu & Yang 2010, Kalantzi et al 2013b. Several previous studies have reported elevated concentrations of elements such as Cu and Zn, which are associated with anti-fouling use, in marine surface sediments (De bourg et al 1993, Burridge et al 1999, Børufsen Solberg et al 2002, Chou et al 2002, Parker & Aube 2002, Brooks & Mahnken 2003.…”

Section: Discussionmentioning

confidence: 99%

“…The extensive use of copper for anti-fouling purposes has raised concerns that the treatment may have an adverse effect on natural or farmed organisms in the environment (Børufsen Solberg et al 2002). In general, high copper concentrations have been observed in sediments near salmon farming facilities that use anti-fouling treatments (Debourg et al 1993, Burridge et al 1999, Chou et al 2002, Brooks & Mahnken 2003, Dean et al 2007. In addition, a number of authors have reported that copper from treated nets could have lethal or sub-lethal effects on farmed fish (Anderson et al 1995, Bellas et al 2001, Burridge & Zitko 2002 and could affect the immediate immune defence mechanism of the exposed fish (Cotou et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish

Nikolaou¹,

Neofitou²,

Skordas³

et al. 2014

Aquacult. Environ. Interact.

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“…available fish oil. More ingredients were analysed in the parallel study of heavy metals, since these are not lipophilic, unless present as organometallics (Chou et al, 2002(Chou et al, , 2003. Anthropogenic sources of PAHs are ubiquitous in the environment.…”

Section: Contaminants and Lipid In Feedmentioning

confidence: 99%

Presence and distribution of PAHs, PCBs and DDE in feed and sediments under salmon aquaculture cages in the Bay of Fundy, New Brunswick, Canada

Hellou

Haya²,

Steller

et al. 2005

Aquatic Conserv: Mar. Freshw. Ecosyst.

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ABSTRACT1. Wastes from feed and faeces can result in the deposition of contaminants in sediments around aquaculture sites. Five types of feed pellet, a commercial fish oil and 76 sediment samples collected under and up to 100 m away from salmon aquaculture cages in the south-western Bay of Fundy between 1998 and 2000 were analysed for polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and chlorinated pesticides.2. Five alkylated naphthalenes (aNAs) were consistently detected in fish oil (116-180 ng g À1 , per aNA), in pellets (25-51 ng g À1, dry weight, per aNA), and sediments (51-45 ng g À1 , dry weight, per aNA). Other PAHs were detected at variable levels in feed or in sediments.3. IUPAC congener 153 (a PCB) and p,p 0 -dichlorodiphenyldichloroethylene (p,p 0 -DDE) were detected more frequently than other chlorinated targets in oil (108 ng g À1 and 176 ng g À1 respectively), feed (51-14 ng g À1 and 1.7-28.2 ng g À1 respectively) and sediments (50.08-3 ng g À1 and 50.5-7 ng g À1 respectively). 4. Trends were observed during the first year of sediment sampling (1998), with higher organic carbon, PCBs and p,p 0 -DDE levels below the cages than 50 m away. The PAHs other than aNA showed an opposite trend with distance. In 1999, levels of p,p 0 -DDE and PCBs were somewhat reduced under the cages, but were detected up to 100 m away from the cages.5. Levels of aNA tended to be higher at some sites in 1999 relative to 1998, reflecting variability in feed and/or differential transport or degradation of contaminants relative to the environmental background. When detected, mean levels of PCBs and DDE were 2-10 times lower in 2000 than in 1999, and PAHs were 30-40% lower in 2000 than in 1999.6. Interpretation of the results is done cautiously, since the exact locations of the sites sampled is only known to an intermediate facilitating the work between farmers and scientists. Levels of contaminants are compared with international results, interpreted relative to potential toxicity, *Correspondence to: Dr. Jocelyne Hellou, Fisheries and Oceans Marine Environmental Sciences Division, Bedford Institute of Oceanography, 1 Challenger Dr., Dartmouth, Nova Scotia, Canada. E-mail: hellouj@mar.dfo-mpo.gc.ca uptake from feed, from deposited sediments, and in the framework of an aquaculture decisionsupport system published recently.

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Aquaculture-related trace metals in sediments and lobsters and relevance to environmental monitoring program ratings for near-field effects

Cited by 79 publications

References 9 publications

Measurement of Aquaculture Chemotherapeutants in Flocculent Matter Collected at a Hard-Bottom Dominated Finfish Site on the South Coast of Newfoundland (Canada) After 2 Years of Fallow

Measurement of Aquaculture Chemotherapeutants in Flocculent Matter Collected at a Hard-Bottom Dominated Finfish Site on the South Coast of Newfoundland (Canada) After 2 Years of Fallow

Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish

Presence and distribution of PAHs, PCBs and DDE in feed and sediments under salmon aquaculture cages in the Bay of Fundy, New Brunswick, Canada

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