Mercury (Hg) and selenium (Se) content in the shark Mustelus henlei (Triakidae) in the northern Mexican Pacific

Medina-Morales, Sergio Alonzo; Corro‐Espinosa, David; Escobar-Sánchez, Ofelia; Delgado-Alvarez, Carolina; Ruelas-Inzunza, J.; Frías-Espericueta, Martín G.; Jara-Marini, Martín E.; Páez‐Osuna, Federico

doi:10.1007/s11356-020-08198-1

Cited by 18 publications

(5 citation statements)

References 47 publications

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“…Teixeira et al [ 67 ] measure a negative value in Deania calcea (−14.56) from the North-East Atlantic similarly to Ralston et al [ 34 ] reporting a negative HBV Se value in Isurus oxyrinchus (−16.4). Values positive but close to zero are reported by Medina-Morales et al [ 59 ] and Teixeira et al [ 67 ] in Mustelus henlei (0.08) from Ocean Pacific and in Etmopterus pusillus from Ocean Atlantic (0.27), respectively. Other reference data regarding sharks display, instead, HBV Se positive, as observed in Isurus oxyrinchus (4.6), Galeorhinus galeus (6.3), Sphyrna spp.…”

Section: Resultssupporting

confidence: 76%

“…Olmedo et al [ 51 ] report levels in the range of 0.02–0.25 μg g −1 w.w. (average 0.10 μg g −1 w.w.) in the muscle of Prionace glauca from the Mediterranean Sea (Spain), while Matos et al [ 55 ] and Branco et al [ 56 ] describe Se concentrations equal to 0.30 μg g −1 w.w. and in the range of 0.084–0.46 μg g −1 w.w., respectively, for the same species from the Atlantic Ocean. Ulusoy et al [ 57 ] find Se levels up to 1.55 μg g −1 w.w. in Squalus acanthias , while Bosch et al [ 49 ] display that Se content in the muscle tissues of Mustelus mustelus from South Africa does not exceed 0.70 μg g −1 w.w. Pantoja-Echevarría et al [ 58 ] and Medina-Morales et al [ 59 ] find concentrations of 0.17 μg g −1 w.w. and 0.03 μg g −1 w.w. in Mustelus henlei from Ocean Pacific, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Determination of Mercury, Methylmercury and Selenium Concentrations in Elasmobranch Meat: Fish Consumption Safety

Storelli

Barone

Garofalo

et al. 2022

IJERPH

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This study measures total mercury (THg), methylmercury (MeHg) and selenium (Se) concentrations in elasmobranch fish from an Italian market with the aim of evaluating the risk-benefit associated with their consumption, using estimated weekly intake (EWI), permissible safety level (MeHgPSL), selenium health benefit value (HBVSe) and monthly consumption rate limit (CRmm) for each species. THg and Se were analysed by atomic absorption spectrometry, while MeHg was determined by HrGc/Ms. THg and MeHg concentrations ranged from 0.61 to 1.25 μg g−1 w.w. and from 0.57 to 0.97 μg g−1 w.w., respectively, whereas Se levels were 0.49–0.65 μg g−1 w.w. In most samples European Community limits for THg were surpassed, while for MeHg none of the fish had levels above the limit adopted by FAO/WHO. EWIs for THg and MeHg in many cases were above the provisional tolerable weekly intakes (PTWIs). MeHgPSL estimate showed that fish should contain approximately 50% of the concentration measured to avoid exceeding the PTWI. Nevertheless, the HBVSe index indicated that solely skates were safe for human consumption (HBVSe = 3.57–6.22). Our results highlight the importance of a constant monitoring of THg and MeHg level in fish, especially in apex predators, to avoid the risk of overexposure for consumers.

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Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Determination of Mercury, Methylmercury and Selenium Concentrations in Elasmobranch Meat: Fish Consumption Safety

Storelli

Barone

Garofalo

et al. 2022

IJERPH

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show abstract

“…Higher concentrations of Se in the liver can be associated with the presence of Hg (although it was not measured in the present study), giving that in this organ Hg detoxification occurs through Hg-Se complexes (Branco et al 2007;Medina-Morales et al 2020). For Mn, liver is fundamental for its homeostasis as it regulates the distribution and excretion of this element in the organism (Papavasiliou et al 1966).…”

Section: Discussionmentioning

confidence: 56%

Essential and non-essential trace element concentrations in muscle and liver of a pregnant Munk’s pygmy devil ray (Mobula munkiana) and its embryo

Baró-Camarasa

Marmolejo-Rodríguez

Cobelo-Garcı́a

et al. 2021

Environ Sci Pollut Res

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Click here to view linked References 20201266 and SIP 20210215), "Biogeoquímica de elementos traza en sistemas costeros influenciados por minería de cobre" (Grant number SIP 20200709), "Biogeoquímica de elementos mayores y traza en sistemas costeros" (Grant number SIP 20211002) and "Modelación ecogeoquímica de sistemas costeros hacia una salud integral" (Grant number SIP 2152). FGM, AJMR thanks the Instituto Politécnico Nacional for their fellowships (COFFA and EDI).

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“…Despite having among the highest levels of Hg recorded in any vertebrate, the physiological and behavioral effects of Hg concentrations on elasmobranchs remains largely unknown (Wosnick et al 2023 ). Although chronic dietary MeHg uptake of 0.2 µg/g, ww in freshwater fish have been found to affect reproduction and other subclinical endpoints (Depew et al 2012 a), studies on the effects of MeHg in the shark brain indicate abilities to demethylate (Ehnert-Russo and Gelsleichter 2020 ) and potentially use detoxifying mechanisms through selenium-Hg liaisons (Branco et al 2007 ; Dutton and Venuti 2019 ; Medina-Morales et al 2020 ) or other physiological abilities (Le Croizier et al 2020 ). For example, while Merly et al ( 2019 ) found that blood concentrations of Hg in white shark ( Carcharodon carcharias ) exceeded levels that are known to be toxic to humans, no negative effects on shark health parameters were detected, including body condition, total leukocytes, or granulocyte to lymphocyte ratios.…”

Section: Resultsmentioning

confidence: 99%

Global mercury concentrations in biota: their use as a basis for a global biomonitoring framework

Evers,

Ackerman,

Åkerblom

et al. 2024

Ecotoxicology

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An important provision of the Minamata Convention on Mercury is to monitor and evaluate the effectiveness of the adopted measures and its implementation. Here, we describe for the first time currently available biotic mercury (Hg) data on a global scale to improve the understanding of global efforts to reduce the impact of Hg pollution on people and the environment. Data from the peer-reviewed literature were compiled in the Global Biotic Mercury Synthesis (GBMS) database (>550,000 data points). These data provide a foundation for establishing a biomonitoring framework needed to track Hg concentrations in biota globally. We describe Hg exposure in the taxa identified by the Minamata Convention: fish, sea turtles, birds, and marine mammals. Based on the GBMS database, Hg concentrations are presented at relevant geographic scales for continents and oceanic basins. We identify some effective regional templates for monitoring methylmercury (MeHg) availability in the environment, but overall illustrate that there is a general lack of regional biomonitoring initiatives around the world, especially in Africa, Australia, Indo-Pacific, Middle East, and South Atlantic and Pacific Oceans. Temporal trend data for Hg in biota are generally limited. Ecologically sensitive sites (where biota have above average MeHg tissue concentrations) have been identified throughout the world. Efforts to model and quantify ecosystem sensitivity locally, regionally, and globally could help establish effective and efficient biomonitoring programs. We present a framework for a global Hg biomonitoring network that includes a three-step continental and oceanic approach to integrate existing biomonitoring efforts and prioritize filling regional data gaps linked with key Hg sources. We describe a standardized approach that builds on an evidence-based evaluation to assess the Minamata Convention’s progress to reduce the impact of global Hg pollution on people and the environment.

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Mercury (Hg) and selenium (Se) content in the shark Mustelus henlei (Triakidae) in the northern Mexican Pacific

Cited by 18 publications

References 47 publications

Determination of Mercury, Methylmercury and Selenium Concentrations in Elasmobranch Meat: Fish Consumption Safety

Determination of Mercury, Methylmercury and Selenium Concentrations in Elasmobranch Meat: Fish Consumption Safety

Essential and non-essential trace element concentrations in muscle and liver of a pregnant Munk’s pygmy devil ray (Mobula munkiana) and its embryo

Global mercury concentrations in biota: their use as a basis for a global biomonitoring framework

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