Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark

Abstract Over the last century anthropogenic activities have rapidly increased the influx of metals and metalloids entering the marine environment, which can bioaccumulate and biomagnify in marine top consumers. This may elicit sublethal effects on target organisms, having broad implications for hum...

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Autores principales:	Oliver N. Shipley, Cheng-Shiuan Lee, Nicholas S. Fisher, James K. Sternlicht, Sami Kattan, Erica R. Staaterman, Neil Hammerschlag, Austin J. Gallagher
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b40dae592bb64b45bdf4d4f52883100e
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spelling	oai:doaj.org-article:b40dae592bb64b45bdf4d4f52883100e2021-12-02T15:13:14ZMetal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark10.1038/s41598-020-79973-w2045-2322https://doaj.org/article/b40dae592bb64b45bdf4d4f52883100e2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79973-whttps://doaj.org/toc/2045-2322Abstract Over the last century anthropogenic activities have rapidly increased the influx of metals and metalloids entering the marine environment, which can bioaccumulate and biomagnify in marine top consumers. This may elicit sublethal effects on target organisms, having broad implications for human seafood consumers. We provide the first assessment of metal (Cd, Pb, Cr, Mn, Co, Cu, Zn, As, Ag, and THg) and metalloid (As) concentrations in the muscle tissue of coastal sharks from The Bahamas. A total of 36 individual sharks from six species were evaluated, spanning two regions/study areas, with a focus on the Caribbean reef shark (Carcharhinus perezi), and to a lesser extent the tiger shark (Galeocerdo cuvier). This is due their high relative abundance and ecological significance throughout coastal Bahamian and regional ecosystems. Caribbean reef sharks exhibited some of the highest metal concentrations compared to five other species, and peaks in the concentrations of Pb, Cr, Cu were observed as individuals reached sexual maturity. Observations were attributed to foraging on larger, more piscivorous prey, high longevity, as well a potential slowing rate of growth. We observed correlations between some metals, which are challenging to interpret but may be attributed to trophic level and ambient metal conditions. Our results provide the first account of metal concentrations in Bahamian sharks, suggesting individuals exhibit high concentrations which may potentially cause sublethal effects. Finally, these findings underscore the potential toxicity of shark meat and have significant implications for human consumers.Oliver N. ShipleyCheng-Shiuan LeeNicholas S. FisherJames K. SternlichtSami KattanErica R. StaatermanNeil HammerschlagAustin J. GallagherNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Oliver N. Shipley Cheng-Shiuan Lee Nicholas S. Fisher James K. Sternlicht Sami Kattan Erica R. Staaterman Neil Hammerschlag Austin J. Gallagher Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
description	Abstract Over the last century anthropogenic activities have rapidly increased the influx of metals and metalloids entering the marine environment, which can bioaccumulate and biomagnify in marine top consumers. This may elicit sublethal effects on target organisms, having broad implications for human seafood consumers. We provide the first assessment of metal (Cd, Pb, Cr, Mn, Co, Cu, Zn, As, Ag, and THg) and metalloid (As) concentrations in the muscle tissue of coastal sharks from The Bahamas. A total of 36 individual sharks from six species were evaluated, spanning two regions/study areas, with a focus on the Caribbean reef shark (Carcharhinus perezi), and to a lesser extent the tiger shark (Galeocerdo cuvier). This is due their high relative abundance and ecological significance throughout coastal Bahamian and regional ecosystems. Caribbean reef sharks exhibited some of the highest metal concentrations compared to five other species, and peaks in the concentrations of Pb, Cr, Cu were observed as individuals reached sexual maturity. Observations were attributed to foraging on larger, more piscivorous prey, high longevity, as well a potential slowing rate of growth. We observed correlations between some metals, which are challenging to interpret but may be attributed to trophic level and ambient metal conditions. Our results provide the first account of metal concentrations in Bahamian sharks, suggesting individuals exhibit high concentrations which may potentially cause sublethal effects. Finally, these findings underscore the potential toxicity of shark meat and have significant implications for human consumers.
format	article
author	Oliver N. Shipley Cheng-Shiuan Lee Nicholas S. Fisher James K. Sternlicht Sami Kattan Erica R. Staaterman Neil Hammerschlag Austin J. Gallagher
author_facet	Oliver N. Shipley Cheng-Shiuan Lee Nicholas S. Fisher James K. Sternlicht Sami Kattan Erica R. Staaterman Neil Hammerschlag Austin J. Gallagher
author_sort	Oliver N. Shipley
title	Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
title_short	Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
title_full	Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
title_fullStr	Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
title_full_unstemmed	Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark
title_sort	metal concentrations in coastal sharks from the bahamas with a focus on the caribbean reef shark
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b40dae592bb64b45bdf4d4f52883100e
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Metal concentrations in coastal sharks from The Bahamas with a focus on the Caribbean Reef shark

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