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Mercury accumulation and biomarkers of exposure in two popular recreational fishes in Hawaiian waters.
Holbert, Stephanie Shaw; Bryan, Colleen E; Korsmeyer, Keith E; Jensen, Brenda A.
Afiliación
  • Holbert SS; College of Natural and Computational Sciences, Hawaii Pacific University, Kaneohe, HI, USA.
  • Bryan CE; Chemical Sciences Division, National Institute of Standards and Technology, Charleston, SC, USA. colleen.bryan@nist.gov.
  • Korsmeyer KE; College of Natural and Computational Sciences, Hawaii Pacific University, Kaneohe, HI, USA.
  • Jensen BA; College of Natural and Computational Sciences, Hawaii Pacific University, Kaneohe, HI, USA.
Ecotoxicology ; 32(8): 1010-1023, 2023 Oct.
Article en En | MEDLINE | ID: mdl-37491684
Mercury (Hg) exposure has not been examined in many recreational nearshore fish species that are commonly consumed around the Hawaiian Islands. Specific gene transcripts, such as metallothionein (MET) and thioredoxin reductase (TrxR), can be used to examine Hg exposure responses in aquatic organisms. This study measured total mercury (THg) in four species from two groups of Hawaiian nearshore fishes: giant trevally (Caranx ignobilis, n = 13), bluefin trevally (C. melampygus, n = 4), sharp jaw bonefish (Albula virgata, n = 2), and round jaw bonefish (A. glossodonta, n = 19). Total Hg accumulation and abundance profiles of MET and TrxR were evaluated for muscle, liver, and kidney tissues. Total Hg in round jaw bonefish and giant trevally tissues accumulated with length and calculated age. In round jaw bonefish tissues, mean THg was greater in kidney (1156 ng/g wet mass (wm)) than liver (339 ng/g wm) and muscle (330 ng/g wm). Giant trevally muscle (187 ng/g wm) and liver (277 ng/g wm) mean THg did not differ significantly. Fish species in this study were compared to commercial and local fish species with state and federal muscle tissue consumption advisories based on THg benchmarks developed by the U.S. Food and Drug Administration (FDA) and Environmental Protection Agency (EPA). Both bonefishes had mean muscle THg that exceeded benchmarks suggesting consumption advisories should be considered. MET transcript in round jaw bonefish kidney tissue and kidney THg exhibited a marginally significant positive correlation, while TrxR transcript in liver tissue negatively correlated with increasing liver THg. These results contribute to our understanding of Hg exposure associated health effects in fish.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Mercurio Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Ecotoxicology Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Mercurio Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Ecotoxicology Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos