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首页> 外文期刊>Marine ecology progress series >Sympatric Globicephala species: feeding ecology and contamination status based on stable isotopes and trace elements
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Sympatric Globicephala species: feeding ecology and contamination status based on stable isotopes and trace elements

机译：同养球头目物种：基于稳定同位素和微量元素的摄食生态学和污染状况

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摘要

Recent legal frameworks and the limited availability of information highlight the need to understand the ecological status and impact of anthropogenic threats on marine populations. In this study, a multi-tracer approach combining stable isotopes and 14 trace elements was used to infer information concerning the feeding ecology, contamination status and ecological segregation of 2 sympatric species of the Globicephala genus which stranded off the northern and western Iberian Peninsula (NWIP): the long-finned pilot whale Globicephala melas (LFPW) and the short-finned pilot whale Globicephala macrorhynchus (SFPW). Additionally, the potential influence of biological variables was investigated. Although both species presented similar stable isotope values, there were inter-specific differences in non-essential trace elements, with higher levels reported for SFPW. There was evidence of the bioaccumulative behaviour of some elements (Ag, Hg, Se, Fe, Co). Results of this study suggest that when both SFPW and LFPW are present in the NWIP, they show similar feeding patterns over at least a short timescale, but over a long timescale different feeding and habitat preferences may occur. This study provides useful information on Globicephala. In particular, it represents the first report on the ecology and contamination status of SFPW in the northern limits of their distribution range, i.e. in the NWIP.
机译：最近的法律框架和有限的信息可用性凸显了必须了解生态状况以及人为威胁对海洋人口的影响。在这项研究中，采用了一种将稳定同位素和14种微量元素相结合的多示踪方法，来推断关于伊比利亚半岛北部和西部搁浅的2种Globicephala属同伴动物的摄食生态学，污染状况和生态隔离的信息。 ）：长鳍虎鲸Globicephala melas（LFPW）和短鳍虎鲸Globicephala macrorhynchus（SFPW）。此外，研究了生物学变量的潜在影响。尽管两个物种都表现出相似的稳定同位素值，但非必需痕量元素之间存在种间差异，据报道，SFPW的含量更高。有证据表明某些元素（Ag，Hg，Se，Fe，Co）的生物蓄积行为。这项研究的结果表明，当NWIP中同时存在SFPW和LFPW时，它们至少在短时间内显示出相似的觅食模式，但在长时间内，可能出现不同的觅食和生境偏好。这项研究提供了关于球头虫的有用信息。特别是，这是关于SFPW在其分布范围北部，即在NWIP的生态和污染状况的第一份报告。

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  • 来源
    《Marine ecology progress series》 |2017年第20期|233-247|共15页
  • 作者

    Monteiro S. S.; Caurant F.; Lopez A.; Cedeira J.; Ferreira M.; Vingada J. V.; Eira C.; Mendez-Fernandez P.;

  • 作者单位

    Univ Minho, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Minho, CBMA, Campus Gualtar, P-4710047 Braga, Portugal|Univ Aberdeen, Sch Biol Sci, Tillydrone Ave, Aberdeen AB24 2TZ, Scotland|Univ Minho, Soc Portuguesa Vida Selvagem, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal|Univ Aveiro, CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal;

    ULR, Ctr Etud Biol Chize, CNRS, UMR 7372, 2 Rue Olympe Gouges, F-17042 La Rochelle 01, France;

    Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal|Univ Aveiro, CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal|Coordinadora Estudio Mamiferos Marinos CEMMA, Gondomar 36380, Pontevedra, Spain;

    Coordinadora Estudio Mamiferos Marinos CEMMA, Gondomar 36380, Pontevedra, Spain;

    Univ Minho, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Minho, CBMA, Campus Gualtar, P-4710047 Braga, Portugal|Univ Minho, Soc Portuguesa Vida Selvagem, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal;

    Univ Minho, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Minho, Soc Portuguesa Vida Selvagem, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Minho, CESAM, Campus Gualtar, P-4710047 Braga, Portugal;

    Univ Minho, Soc Portuguesa Vida Selvagem, Dept Biol, Campus Gualtar, P-4710047 Braga, Portugal|Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal|Univ Aveiro, CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal;

    Univ Sao Paulo, Oceanog Inst, BR-05508120 Sao Paulo, SP, Brazil;

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  • 正文语种 eng
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  • 关键词

    Stable isotopes; Trace elements; Multi-tracer approach; Feeding ecology; Ecological segregation; Toxicology; Bioaccumulation; North-west Iberian Peninsula;

    机译：稳定同位素;痕量元素;多示踪法;进食生态学;生态隔离;毒理学;生物蓄积;西北伊比利亚半岛;

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