Mercury and selenium concentrations in the crab Callinectes arcuatus from three coastal lagoons of NW Mexico
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RESEARCH ARTICLE
Mercury and selenium concentrations in the crab Callinectes arcuatus from three coastal lagoons of NW Mexico Carolina Guadalupe Delgado-Alvarez 1 & Jorge Ruelas-Inzunza 2 & Carmen Cristina Osuna-Martínez 3 & Magdalena Elizabeth Bergés-Tiznado 1 & Ofelia Escobar-Sánchez 3,4 & Pedro Octavio Ocampo-Rodríguez 3 & Karen Lizbeth Soto-Romero 3 & Nancy Lorena Garzón-Raygoza 3 & Marisela Aguilar-Júarez 3 & José Isidro Osuna-López 5 & Martín Frías-Espericueta 3 Received: 8 May 2020 / Accepted: 23 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of northwest Mexico were determined using atomic absorption spectrophotometry. The three coastal lagoons were Santa María La Reforma (SMLR), Urías (UR), and Huizache-Caimanero (HC); samplings were carried out from December 2016 to October 2017. The mercury ranges in the muscle of C. arcuatus in SMLR, UR, and HC lagoons were 0.31–0.52, 0.15–0.45, and 0.22–0.55 μg g−1, respectively. In hepatopancreas, the values ranged from 0.08 to 0.15, 0.06 to 0.15, and 0.05 to 0.12 μg g−1 in SMLR, UR, and HC lagoons, in that order. For selenium concentrations in C. arcuatus muscle, the ranges 11.64–20.14, 14.88–19.71, and 15.27–29.51 μg g−1 were determined in SMLR, UR, and HC lagoons, respectively. While for hepatopancreas, the ranges were 34.34–44.13, 27.77–40.45, and 15.16–49.80 μg g−1, in that order. No significant relationships (p > 0.05) between mercury and selenium concentrations (in white meat and hepatopancreas) were observed in C. arcuatus carapace width and length. Se:Hg molar ratio values were 98.1 ± 20.8, 171.4 ± 81.6, and 176.8 ± 51.2 for SMLR, UR, and HC lagoons, in that order. This high ratio (> 1) in C. arcuatus edible muscle indicated that selenium concentration was sufficient to neutralize possible mercury toxicity, so it does not represent danger to humans when it is consumed. Keywords Hg . Se . Trace elements . Molar ratio . Crabs . Human health
Introduction
Responsible Editor: Vedula VSS Sarma * Martín Frías-Espericueta [email protected] 1
Universidad Politécnica de Sinaloa, Carretera Municipal Libre Mazatlán Higueras Km 3, C.P, 82199 Mazatlán, Sinaloa, Mexico
2
Instituto Tecnológico de Mazatlán, Calle Corsario 1, No. 203, C.P, 82070 Mazatlán, Sinaloa, Mexico
3
Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, C.P, 82000 Mazatlán, Sinaloa, Mexico
4
Consejo Nacional de Ciencia y Tecnología (CONACYT), Dirección de Cátedras CONACYT, Av. Insurgentes Sur 1582, Col Crédito Constructor, Del. Benito Juárez, C.P, 03940 Ciudad de México, Mexico
5
Universidad Autónoma de Occidente, Blvd. Lola Beltrán s, /n Culiacán, Sinaloa, Mexico
Chemical elements are natural and/or anthropogenic pollutants found in the environment around the world, usually in different levels according to the characteristics of each zone; if such metal levels are above the natura
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