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Bulletin of environmental contamination and toxicology. 2024 Jun 1;112(6):82. doi: 10.1007/s00128-024-03904-y Q32.22024

Mercury Concentrations in Two Populations of the most Endangered Dolphin (Pontoporia blainvillei) from the Southwestern Atlantic Ocean

西南大西洋两种极度濒危的淡水鲸豚类彭氏江豚（Pontoporia blainvillei）群体的汞浓度分布特征分析 翻译改进

Emi Brinatti Guari  1, Monizze Vannuci-Silva  1  2, Bárbara M R Manhães  1  2, Eduardo Resende Secchi  3, Silvina Botta  3, Carolina Pacheco Bertozzi  4, Elitieri Batista Santos-Neto  1  2, Carolina Pereira Dias  1, Alexandre de Freitas Azevedo  1  2, Tatiana Lemos Bisi  1  2, Haydée Andrade Cunha  2, José Lailson-Brito  5  6

作者单位 +展开

作者单位

  • 1 Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brasil.
  • 2 Laboratório de Mamíferos Aquáticos e Bioindicadores "Professora Izabel M. Gurgel" (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro-UERJ, Rua São Francisco Xavier, 524, sala 4002, Maracanã, Rio de Janeiro, 20550-013, RJ, Brasil.
  • 3 Laboratório de Ecologia e Conservação da Megafauna Marinha (ECOMEGA), Instituto de Oceanografia, Universidade Federal do Rio Grande-FURG, Av. Itália, km 8, Rio Grande, 96203-900, Brasil.
  • 4 Universidade Estadual Paulista Júlio de Mesquita Filho, Campus do Litoral Paulista - Unidade São Vicente-UNESP, Praça Infante Dom Henrique, s/n, Parque Bitaru, São Vicente, 11330-900, Brasil.
  • 5 Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brasil. lailson@uerj.br.
  • 6 Laboratório de Mamíferos Aquáticos e Bioindicadores "Professora Izabel M. Gurgel" (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro-UERJ, Rua São Francisco Xavier, 524, sala 4002, Maracanã, Rio de Janeiro, 20550-013, RJ, Brasil. lailson@uerj.br.

    • DOI: 10.1007/s00128-024-03904-y PMID: 38822880

    摘要 Ai翻译

    Mercury contamination has been aggravated by emerging environmental issues, such as climate change. Top predators present concerning Hg concentrations once this metal bioaccumulates and biomagnifies. This study evaluated total mercury (THg) concentrations in tissues of 43 franciscanas (Pontoporia blainvillei) from two populations: the Franciscana Management Area (FMA) IIb and FMA IIIa. Animals from FMA IIIa showed mean concentration 5-times and 2.5-times higher in the liver and kidney (4.73 ± 6.84 and 0.52 ± 0.51 µg.g-1, w.w., respectively) than individuals from FMA IIb (0.89 ± 1.04 and 0.22 ± 0.15 µg.g-1, w.w., respectively). This might be due to: (I) individuals sampled from FMA IIIa being larger and older, and/or (II) the area near FMA IIIa presents environmental features leading to higher THg availability. Coastal contamination can affect franciscanas' health and population maintenance at different levels depending on their life history and, therefore, it should be considered to guide specific conservation actions.

    Keywords: Brazil; Odontoceti; Pontoporiidae; Tissue concentrations; Total mercury.

    Keywords：mercury concentrations; endangered dolphin; southwestern atlantic ocean

    关键词：汞浓度; 濒危 dolphins; 西南大西洋海洋

    Copyright © Bulletin of environmental contamination and toxicology. 中文内容为AI机器翻译，仅供参考！

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    期刊名：Bulletin of environmental contamination and toxicology

    缩写：B ENVIRON CONTAM TOX

    ISSN：0007-4861

    e-ISSN：1432-0800

    IF/分区：2.2/Q3

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    Mercury Concentrations in Two Populations of the most Endangered Dolphin (Pontoporia blainvillei) from the Southwestern Atlantic Ocean