title: Mercury and selenium concentrations in marine shrimps of NW Mexico: health risk assessment.
abstract: We determined total Hg and Se contents of hepatopancreas, exoskeleton, and muscle, and the Se:Hg molar ratios in the muscle of shrimps Farfantepenaeus californiensis and Litopenaeus stylirostris caught in NE Pacific Mexican waters. Total Hg mean values in muscle, hepatopancreas, and exoskeleton were 0.31 ± 0.26, 0.28 ± 0.29, and 0.24 ± 0.06 μg g-1, and 0.46 ± 0.46, 0.41 ± .034, and 0.24 ± 0.06 μg g-1for F. californiensis and L. stylirostris, respectively. In all tissues, the mean concentrations of Se tended to be close to one order of magnitude higher than the respective Hg values. In F. californiensis, the hepatopancreas of the larger commercial size had significantly (p < 0.05) higher Hg content than smaller sizes, but correlations size-Hg concentration calculated for each tissue of either species were not significant. The Hg content of the muscle of all commercial sizes of both species was lower than the permissible limit and their Se:Hg ratios in all sizes were higher than 1, indicating low risk for human consumption.
authors: Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, 82000, Mazatlán, Sinaloa, Mexico.
authors: M G
authors: MG
authors: Frías-Espericueta
authors: Programa de Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, México D.F., Mexico.
authors: B Y
authors: BY
authors: Ramos-Magaña
authors: Instituto Tecnológico de Mazatlán, 82000, Mazatlán, Sinaloa, Mexico.
authors: J
authors: J
authors: Ruelas-Inzunza
authors: UA Mazatlán ICMyL, Universidad Nacional Autónoma de México, 82000, Mazatlán, Sinaloa, Mexico.
authors: M F
authors: MF
authors: Soto-Jiménez
authors: Cátedras-Conacyt, Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, 82000, Mazatlán, Sinaloa, Mexico.
authors: O
authors: O
authors: Escobar-Sánchez
authors: Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, 82000, Mazatlán, Sinaloa, Mexico.
authors: M
authors: M
authors: Aguilar-Juárez
authors: Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, 82000, Mazatlán, Sinaloa, Mexico.
authors: G
authors: G
authors: Izaguirre-Fierro
authors: Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, 82000, Mazatlán, Sinaloa, Mexico.
authors: C C
authors: CC
authors: Osuna-Martínez
authors: Laboratorio de Estudios Ambientales UAS-CIBNOR, Centro de Investigaciones Biológicas del Noroeste, P.O. Box 1132, 82000, Mazatlán, Sinaloa, Mexico. voltolin04@cibnor.mx.
authors: D
authors: http://orcid.org/0000-0003-2226-822X
authors: D
authors: Voltolina
mesh_terms: D060105:Animal Shells / Q000737:chemistry; D000818:Animals; D049628:Body Size; D004784:Environmental Monitoring; D005506:Food Contamination / Q000032:analysis*; D043143:Hepatopancreas / Q000737:chemistry; D006801:Humans; D008628:Mercury / Q000032:analysis*; D008800:Mexico; D009132:Muscles / Q000737:chemistry; D033561:Penaeidae; D018570:Risk Assessment; D012643:Selenium / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D008628:Mercury; D012643:Selenium
keywords: Mercury; NW Mexico; Risk assessment; Selenium; Shrimp