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首页> 外文期刊>Estuarine Coastal and Shelf Science >Offshore-onshore linkages in the larval life history of sole in the Gulf of Lions (NW-Mediterranean)
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Offshore-onshore linkages in the larval life history of sole in the Gulf of Lions (NW-Mediterranean)

机译：狮子湾（NW-地中海）的幼虫生活史中的近海-陆上联系

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摘要

Understanding individual dispersion from offshore natal areas to coastal nurseries during pelagic larval life is especially important for the sustainable management of exploited marine fish species. For several years, the hatching period, the larval life duration, the average growth rate and the otolith chemical composition (δ~(13)C, δ~(18)O, Sr:Ca and Ba:Ca) during the larval life were studied for young of the year (YOY) of sole collected in three main nurseries of the Gulf of Lions (GoL) (Thau, Mauguio and Berre). We investigated the spatial variation in the origin of the sole larvae which colonised the nurseries around the GoL, and whether temporal differences in environmental conditions during this life stage affected growth and larval life duration. The hatching period ranges from October to March, depending on year and site. Average ages at metamorphosis varied between 43 and 50 days, with the lowest and highest values consistently found for Mauguio and Berre, respectively. Otolith growth rates ranged between 2.7 and 3.2 μm d~(-1), with the lowest values in Thau and Mauguio and the highest in Berre. Otolith chemical composition during the larval life also varied, suggesting contrasted larval environmental histories in YOY among nurseries. In fishes from Berre and Mauguio, larval life was more influenced by the Rhone River, showing consistently higher larval Ba:Ca ratios (10/23 μmol mol~(-1)) and lower δ~(13)C (-6.5/-6.1‰) and δ~(18)O values (-l.6/0.1‰) than for Thau (with Ba:Ca ratios ＜ 8 μmol mol~(-1), δ~(13)C～ -2.3‰ and δ~(18)O ～1.5‰). Differences in larval otolith composition were observed for 2004, with higher Ba:Ca and lower δ~(13)C and δ~(18)O values than in the two other years. These differences were explained by changes in composition and chemical signatures of water masses after an exceptional flooding event of the Rhone River in late 2003.
机译：了解中上层幼体生活期间从近海产区到沿海苗圃的个体分布对于可持续管理海洋鱼类物种特别重要。几年来，幼虫的孵化期，幼虫寿命，平均增长率和耳石化学成分（δ〜（13）C，δ〜（18）O，Sr：Ca和Ba：Ca）为研究了在狮子湾（GoL）的三个主要苗圃（Thau，Mauguio和Berre）收集的年幼（YOY）鞋底。我们调查了在GoL周围的苗圃定殖的唯一幼体起源的空间变化，以及在此生命阶段环境条件的时间差异是否影响了生长和幼体寿命。孵化期从10月到3月不等，具体取决于年份和地点。变态的平均年龄在43天到50天之间变化，分别为Mauguio和Berre的最低和最高值。耳石生长速率介于2.7和3.2μmd〜（-1）之间，其中Thau和Mauguio最低，Berre最高。幼虫生活期间的耳石化学成分也各不相同，这表明育苗间幼虫的环境历史有所不同。在Berre和Mauguio的鱼类中，罗纳河对幼虫生活的影响更大，表现出幼虫Ba：Ca比值始终较高（10/23μmolmol〜（-1））和较低的δ〜（13）C（-6.5 /- 6.1‰）和δ〜（18）O值（-l.6 / 0.1‰）比Thau（Ba：Ca比＜8μmolmol〜（-1），δ〜（13）C〜-2.3‰和δ〜（18）O〜1.5‰）。 2004年观察到幼虫耳石成分的差异，与过去两年相比，Ba：Ca较高，而δ〜（13）C和δ〜（18）O值较低。这些差异可以通过2003年底罗纳河发生特大洪水后水团的成分和化学特征发生变化来解释。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第5期|194-202|共9页
  • 作者

    Fabien Morat; Yves Letourneur; Dominique Blamart; Christophe Pecheyran; Audrey M. Darnaude; Mireille Harmelin-Vivien;

  • 作者单位

    Aix Marseille Universite, Universite de Toulon, CNRS/INSU, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France,IRSTEA, Centre d'Aix en Provence, 3275 Route de Cezanne, CS 40061, 13182 Aix en Provence Cedex 5, France;

    Universite de la Nouvelle-Caledonie, Laboratoire LIVE et LABEX « Corail », BP R4, 145 Avenue James Cook, 98851 Noumea Cedex, New Caledonia;

    Laboratoire des Sciences du Climat et de l'Environnement, UMR 8212 CEA/CNRS/UVSQ, LSCE-Bat. 12, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France;

    Universite de Pau et des Pays de l'Adour, LCABIE, UMR 5254 CNRS/IPREM, Helioparc Pau Pyrenees, Pau, France;

    Laboratoire Ecologie des Systemes Marins Cotiers, UMR 5119 CNRS/UM2/IRD/UM1/Ifremer, Universite de Montpellier 2, CC093, Bat. 24, Place Eugene Bataillon, 34 095 Montpellier, France;

    Aix Marseille Universite, Universite de Toulon, CNRS/INSU, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France;

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  • 正文语种 eng
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  • 关键词

    Solea solea; Rhone River; otolith microchemistry; stable isotope; age; river flood event;

    机译：索莱亚罗纳河;耳石微化学;稳定同位素年龄;河流洪水事件;

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