Total Mercury Content—Fish Weight Relationship in Swordfish (Xiphias gladius) Caught in the Southwest Atlantic Ocean

Méndez, Eduardo; Giudice, Horacio; Pereira, Alfredo; Inocente, Gustavo; Medina, Dinorah

doi:10.1006/jfca.2001.1005

Cited by 46 publications

(21 citation statements)

References 8 publications

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“…This process occurs because consumers feeding at higher trophic levels eat larger preys with higher body burdens that smaller ones (Bodin et al, 2016). Larger individuals have shown higher TE concentrations, as was previously reported in studies in certain fish species including swordfish (Mendez et al, 2001;Storelli and Marcotrigiano, 2001).…”

Section: A R T I C L E I N F Osupporting

confidence: 54%

“…Consequently, a large percentage of Hg is present as toxic MeHg in the edible portions of fish consumed by man (Kojadinovic et al, 2007b). From a public health point of view, the consumption of fish with high mercury content does not represent a hazard, provided that it is not eaten on a regular basis (Mendez et al, 2001). Despite the fact that our results do not show high concentrations of TE and associated risks, it remains important that higher concentrations could be found in particularly large and elderly individuals due to bioaccumulation on certain elements.…”

Section: A R T I C L E I N F Ocontrasting

confidence: 52%

“…Swordfish, usually accumulates mercury as methyl mercury, while inorganic mercury usually represents a minor proportion of the total mercury present in the tissues (Vlieg et al, 1993). Methyl mercury does not occur naturally in water, and its presence in fish muscle is due to in vivo biochemical transformation or by ingestion of preformed methyl mercury along the food chain (Mendez et al, 2001). Consequently, a large percentage of Hg is present as toxic MeHg in the edible portions of fish consumed by man (Kojadinovic et al, 2007b).…”

Section: A R T I C L E I N F Omentioning

confidence: 99%

See 2 more Smart Citations

Trace element concentrations in the apex predator swordfish (Xiphias gladius) from a Mediterranean fishery and risk assessment for consumers

Gobert

Pasqualini

Dijoux

et al. 2017

Marine Pollution Bulletin

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Section: A R T I C L E I N F Osupporting

confidence: 54%

Section: A R T I C L E I N F Ocontrasting

confidence: 52%

Section: A R T I C L E I N F Omentioning

confidence: 99%

See 1 more Smart Citation

Trace element concentrations in the apex predator swordfish (Xiphias gladius) from a Mediterranean fishery and risk assessment for consumers

Gobert

Pasqualini

Dijoux

et al. 2017

Marine Pollution Bulletin

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“…Ocean and Eastern Atlantic Ocean (e.g., Japan: 1.03 ppm ww, (Yamashita et al, 2011); Hawaii: 1.07±0.60 ppm ww, (Kaneko and Ralston, 2007); Azores: 0.06-4.91 ppm ww, (Branco et al, 2007;Monteiro and Lopes, 1990); Equatorial region: 0.90-2.3 ppm ww (Branco et al, 2007)), whereas swordfish in the Western Atlantic Ocean was 1.5-2-fold less contaminated (e.g., Brazil and Uruguay waters: 0.60.3 ppm ww, (Mendez et al, 2001;Rodrigues et al, 2013); US southern waters: 0.46±0.24 ppm ww (Cai et al, 2007(Cai et al, , 2006). Hg values of wahoo reported in this study were surprisingly high (from 0.60 to 2.17 ppm ww), exceeding by far those reported for similar-size specimens in Reunion Island and Hawaii (0.13±0.08 and 0.25±0.20 ppm ww, respectively; (Kaneko and Ralston, 2007;.…”

Section: On a Global Scale X Gladius From The Indian Ocean Had Simimentioning

confidence: 99%

Trace elements in oceanic pelagic communities in the western Indian Ocean

et al. 2017

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The mineral composition of target and non-target pelagic fish caught by purse-seiners and longliners in the western-central Indian Ocean was determined. From the ten essential elements analysed, selenium and zinc showed the highest concentrations in swordfish and blue marlin while Indian mackerel appeared as a good source of copper, iron and chrome. All catch had levels of lead and cadmium, two toxic elements, below the maximum sanitary limits. Although some concerns were raised regarding mercury concentrations in the largest species (wahoo, swordfish and blue marlin), molar ratios of mercury and selenium indicate that all oceanic pelagic fish from the western-central Indian Ocean are safe for human consumption. This study also gives insights on the relationships between the levels of essential and toxic elements in fish muscle and the size, trophic position and diet sources of the studied pelagic species.

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“…It is recommended that the population restrains from consuming, on a regular basis, species exceeding these values. Based on this, Hg is considered as a potential safety hazard for Skipjacks, Halibuts, the Spanish Mackerel (Scomberomorous maculatus), the King Mackerel (S. cavalla), Marlins, Sharks, the Swordfish and the Bluefin Tuna (Mendez et al, 2001;Dua and Gupta, 2005).…”

Section: Risk To the Fish And Their Predatorsmentioning

confidence: 99%

Mercury content in commercial pelagic fish and its risk assessment in the Western Indian Ocean

Kojadinovic

Potier

Corre³

et al. 2006

Science of The Total Environment

120

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As top predators of pelagic food webs, large fish naturally bioaccumulate mercury (Hg). Determining Hg burdens in commercialized fish is essential considering the concern about effects of contaminants on human health and the legal thresholds that are therefore set for local consumption and/or exportation. Total Hg levels were measured in the muscular tissue of 183 fish of five commercially important species from the tropical zone of the Western Indian Ocean. All individuals were measured and sexed in order to study the impregnation of Hg with size and sex within each species. Values of Hg found in this part of the Indian Ocean were comparable to Hg in muscular tissue of the same species studied in other areas. The highest Hg levels were noted in Swordfish (Xiphias gladius) caught in waters surrounding Reunion Island (3.97 ± 2.67 µg.g −1 dry weight). Following the Swordfish, in decreasing order of Hg content, were the Yellowfin Tuna (Thunnus albacares) and the Skipjack (Katsuwonus pelamis), then the Common Dolphinfish (Coryphaena hippurus) and the Wahoo (Acanthocybium solandri). In the North of the Mozambique Channel, Swordfish had higher Hg levels than Yellowfin Tunas, and Dolphinfish exhibited intermediate Hg levels. The size of a fish was a determinating factor of its Hg burden, as was the species. Differences in size-normalized Hg levels were observed between the two study zones for Swordfish and Common Dolphinfish. Sex, in contrast, did not influence Hg levels suggesting that females and males have similar feeding habits. The muscular Hg levels presented here suggest that consumers of fish originating from the Western Indian Ocean should limit themselves to one Swordfish based meal per week, or one fish meal a day if they choose to eat tuna or Common Dolphinfish.

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Total Mercury Content—Fish Weight Relationship in Swordfish (Xiphias gladius) Caught in the Southwest Atlantic Ocean

Cited by 46 publications

References 8 publications

Trace element concentrations in the apex predator swordfish (Xiphias gladius) from a Mediterranean fishery and risk assessment for consumers

Trace element concentrations in the apex predator swordfish (Xiphias gladius) from a Mediterranean fishery and risk assessment for consumers

Trace elements in oceanic pelagic communities in the western Indian Ocean

Mercury content in commercial pelagic fish and its risk assessment in the Western Indian Ocean

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