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首页> 外文期刊>Ecotoxicology and Environmental Safety >Metal toxicity assessment by sentinel species of mangroves: In situ case study integrating chemical and biomarkers analyses
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Metal toxicity assessment by sentinel species of mangroves: In situ case study integrating chemical and biomarkers analyses

机译：红树林前哨物种的金属毒性评估：结合化学和生物标记分析的原位案例研究

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摘要

Globally, there is a lack of knowledge about tropical ecotoxicology dealing with the potential impact of metal contamination in mangrove ecosystem. This habitat is considered a nursery for several animal species, among them the "uca"-crab (Ucides cordatus), known as a key species due to its biological and economical importance. This study evaluated the association involving metal contamination (Cd, Cu, Pb, Cr, Mn and Hg) in water, sediment, red-mangrove vegetation (Rhizophora mangle) and tissues of uga crab, together with its geno-cytotoxic responses, based on micronucleated hemocytes frequency and the retention time of neutral red in lysosomes. We assessed six mangrove areas with distinct pollution levels in Sao Paulo State, Brazil, where the water and sediment contamination by metals were associated with accumulation of these pollutants in biotic compartments (mangrove leaves and crab). In U. cordatus, metal accumulation was best explained by metal concentration found in leaves of R. mangle than in the water or sediment, indicating that feeding drives metal exposure in this organism. Mercury (Hg) concentration in sediment, copper (Cu) concentration in hepatopancreas of U. cordnnic and lead (Pb) in water and green leaves of R. mangle showed a significant correlation with genotoxic impact in U. cordatus. However, copper concentration (in green/senescent leaves and hepatopancreas) and lead (in sediment), were the major metals affecting lysosomal membrane integrity. Therefore, representatives of all compartments were associated with cyto and genotoxicity in this species, thus requiring a holistic approach to issues related to sublethal damage. Probability estimates of cytogenetic impacts related to metal concentration in abiotic compartments (significantly correlated with known biomarkers: Hg in sediment; and Pb in water and sediment) are also presented. Our results highlight the need for environmental restoration of mangroves areas contaminated with metals, responsible for cytogenetic injuries and revealing a pre-pathological condition in this sentinel species, in addition to ecological disturbances.
机译：在全球范围内，缺乏有关热带生态毒理学知识的知识，该知识涉及金属污染对红树林生态系统的潜在影响。该栖息地被认为是多种动物的育苗场，其中包括“ uca”蟹（Ucides cordatus），由于其生物学和经济重要性而被称为关键物种。这项研究评估了涉及的金属污染物（镉，铜，铅，铬，锰和汞）（Cd，Cu，Pb，Cr，Mn和Hg）与uga蟹组织中的金属污染物（Cd，Cu，Pb，Cr，Mn和Hg）及其遗传细胞毒性反应，基于微核血细胞的频率和中性红在溶酶体中的保留时间。我们在巴西圣保罗州评估了六个具有不同污染水平的红树林地区，这些地区的金属水和沉积物污染与这些污染物在生物区室（红树林叶子和螃蟹）中的积累有关。在绳状线虫中，金属的积累可以用在man鱼叶片中发现的而不是在水或沉积物中的金属浓度来最好地解释，这表明进食驱动了该生物体内的金属暴露。沉积物中汞（Hg）的浓度，脐带锦囊的肝胰腺中铜（Cu）的浓度以及红菱man（R。mangle）的水和绿叶中的铅（Pb）与遗传毒性对脐带藻的影响显着相关。然而，铜浓度（绿色/衰老叶片和肝胰腺中）和铅（沉积物中）是影响溶酶体膜完整性的主要金属。因此，所有隔离区的代表都与该物种的细胞毒性和遗传毒性有关，因此需要整体处理与亚致死性损害有关的问题。还介绍了与非生物区隔中的金属浓度相关的细胞遗传学影响的概率估计值（与已知的生物标记显着相关：沉积物中的Hg；水和沉积物中的Pb）。我们的结果突出表明，需要对环境进行恢复，以恢复被金属污染，造成细胞遗传损伤并揭示该定居物种的病理前状况的金属污染的红树林，以及生态干扰。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2017年第11期|367-376|共10页
  • 作者

    de Almeida Duarte Luis Felipe; de Souza Caroline Araujo; Seabra Pereira Camilo Dias; Amaro Pinheiro Marcelo Antonio;

  • 作者单位

    UNESP Univ Estadual Paulista, Inst Biociencias IB, Lab Biol Crustaceos, Grp Pesquisa Biol Crustaceos CRUSTA), Campus Litoral Paulista CLP, BR-11330900 Sao Paulo, Brazil;

    UNESP Univ Estadual Paulista, Inst Biociencias IB, Lab Biol Crustaceos, Grp Pesquisa Biol Crustaceos CRUSTA), Campus Litoral Paulista CLP, BR-11330900 Sao Paulo, Brazil;

    UNIFESP Univ Fed Sao Paulo, Dept Ciencias Mar, Campus Baixada Santista, BR-11030400 Santos, SP, Brazil|Univ Santa Cecilia, Lab Ecotoxicol, UNISANTA, Rua Oswado Cruz 266, BR-11045900 Santos, SP, Brazil;

    UNESP Univ Estadual Paulista, Inst Biociencias IB, Lab Biol Crustaceos, Grp Pesquisa Biol Crustaceos CRUSTA), Campus Litoral Paulista CLP, BR-11330900 Sao Paulo, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Crab; Cytotoxicity; Genotoxicity; Mangrove; Metals; Ucides cordatus;

    机译：螃蟹;细胞毒性;遗传毒性;红树林;金属;脐带;

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