Mercury, arsenic, cadmium and lead in two commercial shark species (Sphyrna lewini and Caraharinus porosus) in Trinidad and Tobago

Mohammed, Azad; Mohammed, Terry

doi:10.1016/j.marpolbul.2017.04.025

Cited by 34 publications

(27 citation statements)

References 27 publications

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“…Mohammed and Mohammed, [ 19 ], reported that the target hazard quotient (THQ) values for heavy metals were above 1 for both species, showing the estimated exposure is potentially of concern. In the context of the present study, THQ of Hg was found to be 2.53 due to the spiny dogfish consumption by the Greek population.…”

Section: Resultsmentioning

confidence: 99%

Tolerance of Tithonia diversifolia and Chromolaena odorata in heavy metal simulated-polluted soils and three selected dumpsites

Samuel¹,

Chukwuka

Odeyemi

2018

Toxicology Reports

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Section: Resultsmentioning

confidence: 99%

Tolerance of Tithonia diversifolia and Chromolaena odorata in heavy metal simulated-polluted soils and three selected dumpsites

Samuel¹,

Chukwuka

Odeyemi

2018

Toxicology Reports

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“…Data on the frequency of shark consumption were multiplied by the average shark consumption rate per serving of 272g [23] to produce average annual and weekly consumption rates for those who eat shark regularly (at least once per month). Those who ate shark less than once per month were excluded due to minimal health risk.…”

Section: Discussionmentioning

confidence: 99%

“…All classifications of shark consumption practice in our manuscript are based on the recommended shark consumption rate for a citizen of Trinidad and Tobago to mitigate exposure to unsafe levels of heavy metals, i.e. less than 272 g, less than once a week [23]. 'Infrequent' shark consumption (including no shark consumption) among individuals and households therefore received 1 point while 'frequent' shark consumption received no points.…”

Section: Plos Onementioning

confidence: 99%

“…The most popular way shark is eaten in Trinidad and Tobago is fried, in a sandwich of fried dough and condiments known as 'Bake and Shark.' Two common species in Trinidad and Tobago, Sphyrna lewini and Carcharhinus porosus, have been shown to contain high levels of the heavy metals mercury, arsenic, cadmium and lead, leading to a recommended consumption rate of less than 272 g, less than once a week [23].…”

Section: Introductionmentioning

confidence: 99%

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An evaluation of the public’s Knowledge, Attitudes and Practices (KAP) in Trinidad and Tobago regarding sharks and shark consumption

et al. 2020

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There is a global lack of data concerning shark consumption trends, consumer attitudes, and public knowledge regarding sharks. This is the case in Trinidad and Tobago, where shark is a popular culinary delicacy. A Knowledge, Attitudes, and Practices (KAP) survey was conducted in Trinidad and Tobago. Six hundred and seven questionnaires were administered. Univariate and stepwise multivariate logistic regressions were performed to test the association between KAP and demographic categories. The response rate was 93.4% with 567 questionnaires returned (473 from Trinidad and 94 from Tobago). Two hundred and seventeen (38.3%) participants were knowledgeable, 422 (74.4%) displayed attitudes in favour of shark conservation and sustainable use, and 270 (47.6%) displayed practices promoting shark conservation and sustainable use. Island (AOR = 2.81, CI = 1.78, 4.46) and tertiary education (AOR = 2.31, CI = 1.20, 4.46) significantly influenced knowledge level. Gender (AOR = 1.50, CI = 1.02, 2.20) and island (AOR = 0.56, CI = 0.35, 0.90) significantly influenced attitude. Gender (COR = 1.59, CI = 1.14, 2.22) was significantly associated with practices. Over 70% of respondents ate shark, and 54.7% ate shark infrequently enough to avoid risks from heavy metal toxicity. Our results may be useful to develop public awareness and practice improvement initiatives in order to improve KAP regarding shark meat consumption.

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“…Heavy metal concentrations in Sphyrnalewiniand Caraharinusporosusfrom Trinidad and Tobago were studied and THQ values were calculated by Mohammed and Mohammed (2017). They reported that the THQ values for heavy metals were above 1 for both species, showing the estimated exposure is potentially of concern.…”

Section: Potential Health Risk From Thornback Ray and Spiny Dogfish Cmentioning

confidence: 99%

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Mol¹,

Kahraman²,

Ulusoy³

2019

Turk. J. Fish. Aquat. Sci.

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Spiny dogfish and thornback ray caught from Turkish waters in the northern part of the Sea of Marmara are mainly exported to Greece for human consumption. Therefore, assessing the health risks from heavy metals via consumption of these species is of importance for the Turkish and Greek consumers. The mean levels of heavy metal concentrations were below the guidelines. The weekly intakes through these species were generally lower than the limits for both communities. However, the percent of the provisional tolerable weekly intake of Hg was above 100% for the spiny dogfish, indicating a potential risk only for the Greek consumers. In general, the target hazard quotients (THQs) and total THQs of heavy metals (TTHQs) were below 1. On the other hand, for the Greek population, THQ of Hg and TTHQ indicated a potential risk due to spiny dogfish consumption. The Hazard Index (HI) was above 1 for both populations, but the HI value of the Greek population was more than three times that of the Turks. The total diet THQ (TDHQ) of Hg also indicated a potential health risk for the Greek population. Differences in consumption rates should be taken into consideration when assessing health risks for various populations.

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Mercury, arsenic, cadmium and lead in two commercial shark species (Sphyrna lewini and Caraharinus porosus) in Trinidad and Tobago

Cited by 34 publications

References 27 publications

Tolerance of Tithonia diversifolia and Chromolaena odorata in heavy metal simulated-polluted soils and three selected dumpsites

Tolerance of Tithonia diversifolia and Chromolaena odorata in heavy metal simulated-polluted soils and three selected dumpsites

An evaluation of the public’s Knowledge, Attitudes and Practices (KAP) in Trinidad and Tobago regarding sharks and shark consumption

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