Contamination by mercury and cadmium in the cetacean products from Japanese market

Endo, Tokiko; Haraguchi, Koichi; Cipriano, Frank; Simmonds, MP; Hotta, Yohei; Sakata, Masakatsu

doi:10.1016/j.chemosphere.2003.09.029

Cited by 38 publications

(19 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was 2.5 times lower than Hg level in specimens from the Lesser Antilles and 4.4-7.8 times lower than Hg concentrations in animals living in the Mediterranean Sea (Corsica), southern Japan and New Caledonia (Table 3) (Cossa et al 2011) together with the absence of human activities releasing Hg in the area. Within odontocetes, the Kerguelen long-finned pilot whale was less contaminated or their muscle Hg concentrations were within the same range of values than most species so far investigated, but their muscle Hg level was consistently higher than that of mysticetes (Thompson 1990;Endo et al 2003Endo et al , 2004Endo et al , 2012. These taxa-related differences can be explained by different feeding habits, with baleen whales generally preying upon lower trophic level prey than toothed whales, i.e.…”

mentioning

confidence: 94%

Ecological tracers and at-sea observations document the foraging ecology of southern long-finned pilot whales (Globicephala melas edwardii) in Kerguelen waters

et al. 2014

View full text Add to dashboard Cite

The food and feeding ecology of the poorly known southern long-finned pilot whale (Globicephala melas edwardii) was investigated using ecological tracers (muscle and skin δ 13 C and δ 15 N, and total mercury, Hg) on individuals from two mass strandings together with at-sea observations of live animals in Kerguelen waters, southern Indian Ocean. Sightings of cetaceans from long-liners over 9 years (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012) emphasized the regular occurrence of pilot whales in slope waters surrounding the archipelago. Tissue δ 13 C values (a proxy of consumer foraging habitat) suggest that pilot whales fed in slope waters and in oceanic subantarctic waters over the last months preceding stranding. Tissue δ 15 N values and Hg concentration (dietary proxies) indicate a high trophic position (~4.7) for the pilot whales, likely corresponding to a mixed diet of fish and squid (not crustaceans) of undetermined species. Both skin and muscle Hg concentrations were positively and linearly correlated to individual size with no concomitant δ 15 N changes, which can be interpreted as a progressive Hg accumulation in tissues of individuals throughout life with no parallel dietary shift. Skin and muscle Hg concentrations were linearly and positively related; hence, Hg skin could be used as a proxy of Hg concentration in muscle (a main Hg reservoir of the body). Kerguelen southern long-finned pilot whales were less Hg contaminated than most pilotwhale populations studied so far, thus suggesting that they are not at a high risk to Hg-induced damages in the remote islands of the Southern Ocean.

show abstract

mentioning

confidence: 94%

Ecological tracers and at-sea observations document the foraging ecology of southern long-finned pilot whales (Globicephala melas edwardii) in Kerguelen waters

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The Hg present in fish and squid is methylated (Caurant et al, 1996;Das et al, 2000;Gerpe et al, 2006), but the majority of Hg accumulated in marine mammal internal organs is inorganic mercury (Wagemann et al, 1998 andCardellicchio et al, 2002). Demethylation of methylHg, followed by the formation of a less toxic Hg-Se complex, is thought to occur in cetacean livers as a protective physiological mechanism (Das et al, 2000 andEndo et al, 2004). An imbalance of Hg and Se can lead to oxidative stress that can impair protein function, damage DNA, and damage membrane lipids leading to onset of disease (Arteel and Sies, 2001).…”

mentioning

confidence: 97%

A survey of trace element distribution in tissues of the dwarf sperm whale ( Kogia sima ) stranded along the South Carolina coast from 1990–2011

Reed

McFee

Pennington

et al. 2015

Marine Pollution Bulletin

View full text Add to dashboard Cite

“…[10][11][12] As a reflection of their preferential feeding on cephalopods, the hepatic Cd concentration found in the kidako moray eel (1.37± 1.08 µg/wet g, n=26, Table 1) was markedly higher than that in the tiger shark (0.15± 0.24 µg/wet g, n=24), 5) but lower than that in toothed whales, such as the killer whale (7.84± 2.90 µg/wet g, n=6), 4) melon-headed whale (7.24± 2.08 µg/wet g, n=15) 6) and some dolphin species. 24) In contrast, the δ 15 N value in the muscle of moray eels was higher than that in whales and dolphins caught off the central and southern regions of Japan 29) as well as that in tiger sharks (our unpublished data). A significant positive correlation, similar to those in other marine predators, 5,12) was observed between hepatic Cd concentration and body length (Fig.…”

Section: Discussionmentioning

confidence: 65%

“…5,6,22,24) The mean recoveries of T-Hg, M-Hg and Cd from the quality controls were 95, 88 and 93% (n=5), respectively, and those of spiked metals from the muscle and liver samples were ranged from 85 to 102%. The M-Hg data were corrected against the recovery of the quality controls (88%).…”

Section: Sampling Of Market Productsmentioning

confidence: 99%

Levels of Mercury and Organohalogen Compounds in the Muscle and Liver of Kidako Moray Eels (<i>Gymnothorax kidako</i>) Caught off the Southern Region of Japan

Endo

Minoshima

Hisamichi

et al. 2012

Biological & Pharmaceutical Bulletin

View full text Add to dashboard Cite

We analyzed the levels of total mercury (T-Hg), methylmercury (M-Hg) and Cd in the muscle and liver of kidako moray eels (Gymnothorax kidako) of different body lengths caught off Kochi Prefecture in southern Japan. Furthermore, we analyzed the levels of organohalogen compounds such as polychlorinated biphenyls (PCBs), p,p′-1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p′-DDE), trans-nonachlor and 2,3,3′,4,4′,5,5′-hepta chloro-1′-methyl-1-2′-bipyrrole (Q1) and stable isotope ratios of carbon (δ 13 C) and nitrogen (δ 15 N) in the muscle of eels. The concentrations of T-Hg and M-Hg in the muscle (edible part) were 0.31 0.08 µg/wet g and 0.25 0.06 µg/wet g (n 26), respectively, and those in large eels exceeded the Japanese legislated levels of T-Hg (0.4 µg/wet g) and M-Hg (0.3 µg/wet g) in fish and shellfish, respectively. The T-Hg and M-Hg concentrations in the liver were markedly higher than those in the muscle, respectively. The ratios of M-Hg to T-Hg in the muscle and liver were about 80 and 60%, respectively, and those ratios tended to decrease with increased body length. The Cd concentrations in the liver tended to increase proportionally with body length, while that in the muscle was trace (around or below 0.03 µg/wet g). The concentrations of PCBs, p,p′-DDE, trans-nonachlor in the muscle tended to increase proportionally with body length, while that of Q1 did not. The δ 13 C and δ 15 N values in the kidako moray eel were markedly higher than those in offshore habit predators reported elsewhere, which may reflect the inshore habitat of this eels.

show abstract

Contamination by mercury and cadmium in the cetacean products from Japanese market

Cited by 38 publications

References 20 publications

Ecological tracers and at-sea observations document the foraging ecology of southern long-finned pilot whales (Globicephala melas edwardii) in Kerguelen waters

Ecological tracers and at-sea observations document the foraging ecology of southern long-finned pilot whales (Globicephala melas edwardii) in Kerguelen waters

A survey of trace element distribution in tissues of the dwarf sperm whale ( Kogia sima ) stranded along the South Carolina coast from 1990–2011

Levels of Mercury and Organohalogen Compounds in the Muscle and Liver of Kidako Moray Eels (<i>Gymnothorax kidako</i>) Caught off the Southern Region of Japan

Contact Info

Product

Resources

About