Essential and non-essential element concentrations in two sleeper shark species collected in arctic waters

McMeans, Bailey C.; Borgå, Katrine; Bechtol, William R.; Higginbotham, David L.; Fisk, Aaron T.

doi:10.1016/j.envpol.2006.10.039

Cited by 77 publications

(33 citation statements)

References 29 publications

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“…As apex predators that can be long-lived, many species of sharks can accumulate Hg to levels that regularly exceed the U.S.EPA guidance level of 0.30 ppm (U.S.EPA 2001) from many locations around the world (Childs et al 1973;Watling et al 1981;Turoczy et al 2000;de Pinho et al 2002;Harris et al 2003;Branco et al 2004;Ruelas-Inzunza and Paez-Osuna 2005;Branco et al 2007;McMeans et al 2007), including the coastal waters of Florida (Hueter et al 1995;Adams and McMichael 1999). The results here in lemon sharks further support this observation.…”

Section: Resultsmentioning

confidence: 98%

Mercury and selenium levels in lemon sharks (Negaprion brevirostris) in relation to a harmful red tide event

Nam

Adams

Reyier

et al. 2010

Environ Monit Assess

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Tissue levels of mercury (Hg; total, organic) and selenium (Se) were assessed in juvenile lemon sharks (Negaprion brevirostris) from Florida nearshore waters collected during a harmful algal bloom (HAB, brevetoxin) event and compared with sharks not exposed to HABs. In all sharks studied, total Hg levels in the muscle were generally present in a molar excess over Se (which may protect against Hg toxicity) and mean muscle Hg levels (0.34 microg/g) exceed safe human consumption guidelines. While there was generally no difference in tissue Hg and Se levels following exposure of sharks to HABs, hepatic Hg levels were significantly lower (56% reduction) in the HAB-exposed sharks compared to controls. As Hg and HABs are globally increasing in scope and magnitude, further work is warranted to assess their interactions and biotic impacts within aquatic ecosystems, especially for a species such as the lemon shark that is classified as a near-threatened species by the International Union for the Conservation of Nature.

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Section: Resultsmentioning

confidence: 98%

Mercury and selenium levels in lemon sharks (Negaprion brevirostris) in relation to a harmful red tide event

Nam

Adams

Reyier

et al. 2010

Environ Monit Assess

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“…Regarding essential metals Cu and Zn, published data ranged widely depending on the species. It has been suggested that such variance could be attributed either to different physiological requirements by the different shark species or the fact that metabolic regulation of essential elements may not be highly efficient in these cold-blooded fishes (McMeans et al 2007). Relatively to Ni, the levels encountered in skin were similar to those reported for various shark species by Vas (1991), while concentrations in gonads and muscle tissue partially agreed with literature data (Vas 1991;Vas and Gordon 1993) Vas (1991) Apristurus spp.…”

Section: Tissue/organ Distribution Of Concentrationsmentioning

confidence: 99%

“…This, in combination with contaminant inputs originating directly from industrial and urban sources located along the coast, makes this environment particularly interesting from the point view of contamination. Nevertheless, trace metal concentrations in these organisms are not well documented either in the Mediterranean area or in other marine regions, and the few studies concentrate on muscle tissue and/or liver only (Adams and McMichael 1999;Endo et al 2008;Ferreira et al 2004;Gibbs and Miskiewicz 1995;Lacerda et al 2000;Mársico et al 2007;McMeans et al 2007;Pinho et al 2002;Powell and Powell 2001;Serrano et al 1997Serrano et al , 2000Storelli et al 2003;Turoczy et al 2000), without any broader picture of the accumulation processes and distribution of the metals among the other tissues. According to the mechanisms of absorption, regulation, storage, and excretion of metals, the various fish tissues present varying bioaccumulation rates and due to their different roles in the above processes, their analysis lead to results with special interest and interpretation (Catsiki and Strogyloudi 1999).…”

Section: Introductionmentioning

confidence: 97%

Distribution of trace elements in the tissues of smooth hound Mustelus mustelus (Linnaeus, 1758) from the southern–eastern waters of Mediterranean Sea (Italy)

Storelli

Cuttone

Marcotrigiano

2010

Environ Monit Assess

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Trace element concentrations (Hg, Cd, Pb, Cr, Ni, Cu, Zn) were determined in the muscle, gonads, skin, and brain of smooth hound Mustelus mustelus in order to define the metal distribution patterns. The data indicated that metal accumulation depended on the tissues probably as a consequence of metabolic needs, physiochemical properties, and detoxification processes specific for each element. Metal concentrations were higher in gonads (Hg 0.10-0.70 μg g(-1); Cd 0.02-0.10 μg g(-1); Pb 0.08-0.39 μg g(-1); Cr 0.06-0.36 μg g(-1); Ni 1.37-3.00 μg g(-1); Zn 9.15-16.30 μg g(-1); Cu 1.95-21.62 μg g(-1)) and skin (Hg 0.16-0.66 μg g(-1); Cd 0.01-0.04 μg g(-1); Pb 0.10-0.62 μg g(-1); Cr 0.15-0.68 μg g(-1); Ni 1.60-7.20 μg g(-1); Zn 9.00-16.00 μg g(-1); Cu 0.78-6.80 μg g(-1)) than brain (Hg 0.04-0.34 μg g(-1); Cd 0.01-0.05 μg g(-1); Pb 0.03-0.59 μg g(-1); Cr 0.08-0.48 μg g(-1); Ni 5.59-9.69 μg g(-1); Zn 5.90-7.35 μg g(-1); Cu 0.90-4.02 μg g(-1)), while muscle always exhibited the lowest levels (Hg 1.03-2.58 μg g(-1); Cd 0.01-0.06 μg g(-1); Pb 0.02-0.16 μg g(-1); Cr 0.05-0.28 μg g(-1); Ni 1.13-2.48 μg g(-1); Zn 2.64-5.06 μg g(-1); Cu 0.33-2.23 μg g(-1)). Ni and Hg took exception having the highest concentrations in brain and muscle, respectively. An assessment of the risk for human due to the consumption of these marine organisms was also undertaken. Regarding Cd and Pb intakes, consumption did not guide to any concerns, while it should be extremely moderate when considering Hg intake. The comparative analyses revealed that Mediterranean sharks were exposed to higher Hg levels than biota inhabiting open ocean.

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“…12 Para elementos que não exercem função biológica, eles não são controlados, sendo acumulados em proporção à sua disponibilidade no meio. [47][48][49][50] Observa-se também que não foi possível uma distinção entre os sexos dos Aratus, bem como das áreas amostrais, indicando que essas duas variáveis têm características similares. A mobilidade e biodisponibilidade dos metais é influenciada por parâmetros físico--químicos como pH.…”

Section: Análise Estatísticaunclassified

DISTRIBUIÇÃO DE ELEMENTOS TRAÇO EM TECIDOS DE Goniopsis cruentata (LATREILLE, 1803) CAPTURADOS NOS MANGUEZAIS DO SUL DA BAHIA - BRASIL E AVALIAÇÃO DO POTENCIAL DE RISCO NO CONSUMO

Carneiro¹,

Silva²,

Reis³

et al. 2018

Quim. Nova

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Recebido em 22/01/2018; aceito em 25/06/2018; publicado na web em 14/08/2018 (LATREILLE, 1803) CAUGHT FROM SOUTH OF BAHIA/ BRAZIL MANGROVES AND POTENTIAL OF RISK ASSESSMENT IN CONSUMPTION. The concentrations of trace metals Ba, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Zn and V were measured in gills, muscle and hepatopancreas of G. cruentata caught from South of Bahia in order to assess the potential health risk by the consumption of mangrove crabs. The highest metal concentrations in gills, and hepatopancreas were Cu, and Zn in muscles, while the lowest metal concentration in three tissues was Cd and Mo. With the results, it is possible to suggest that the high concentrations of some elements, especially of the Cu, may present risks to the Aratu consumers of the mangrove areas studied, or to other populations where these animals may be transported, same for other cities. The mean concentration of Pb in gills in Una and Jequitinhonha is above the value allowed by the legislation, 3,08 μg g -1 and 3,49 μg g -1 DISTRIBUTION OF TRACE ELEMENTS IN TISSUES OF Goniopsis cruentata, respectively. The concentration of Mn in the females in the three estuaries studied was 1.5 to 4.2 times higher than in the males. In general, detected mean metal concentrations in crab tissues were (in decreasing order) gills > hepatopancreas > muscles. Through the PCA analysis, differentiation between the tissues studied was observed due to its elemental composition. The target hazard quotient (QR) of all trace metals in muscle was less than 1.0 of the provisional tolerable daily intake (IDE) adopted by the USEPA. These results imply that G. cruentata caught from South of Bahia do not have an adverse impact on the consumer health.Keywords: Aratu; health risks; gills; hepatopancreas; muscles. INTRODUÇÃOO avanço da tecnologia, bem como o aumento da população, levou a preocupações ambientais relacionadas ao despejo indiscriminado de lixo e descarga de efluentes industriais, 1 visto que as principais fontes de contaminação responsáveis pelo aumento nos níveis de contaminantes são a entrada indústria química, fabricação de papel, vazamento de oleoduto de campo de petróleo, 2 somados à deposição atmosférica, erosão da matriz geológica e resíduos minerais. A descarga desses resíduos sem tratamento adequado geralmente contamina o ambiente estuarino, tanto a água como o sedimento e, consequentemente, a biota que retêm a parcela de contaminantes biodisponíveis. 3Elementos químicos estão presentes naturalmente na crosta terrestre e podem entrar nos ciclos de água e alimentos através de uma variedade de processos químicos e geoquímicos no ambiente, sendo alguns deles essenciais à vida em níveis baixos, mas tóxicos em maior concentração.1 Os metais não são biodegradáveis e, como consequência, se acumulam em tecidos vivos.2 O processo de bioacumulação de metais pesados é a acumulação líquida de um metal no tecido de interesse ou todo o organismo que resulta de todos os meios de exposição ambiental, incluindo ar, água, fases sólidas e dieta.1 Além disso, depende ...

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Essential and non-essential element concentrations in two sleeper shark species collected in arctic waters

Cited by 77 publications

References 29 publications

Mercury and selenium levels in lemon sharks (Negaprion brevirostris) in relation to a harmful red tide event

Mercury and selenium levels in lemon sharks (Negaprion brevirostris) in relation to a harmful red tide event

Distribution of trace elements in the tissues of smooth hound Mustelus mustelus (Linnaeus, 1758) from the southern–eastern waters of Mediterranean Sea (Italy)

DISTRIBUIÇÃO DE ELEMENTOS TRAÇO EM TECIDOS DE Goniopsis cruentata (LATREILLE, 1803) CAPTURADOS NOS MANGUEZAIS DO SUL DA BAHIA - BRASIL E AVALIAÇÃO DO POTENCIAL DE RISCO NO CONSUMO

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