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首页> 外文期刊>Marine ecology progress series >From endemism to widespread distribution: phylogeography of three amphidromous Sicyopterus species (Teleostei: Gobioidei: Sicydiinae)
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From endemism to widespread distribution: phylogeography of three amphidromous Sicyopterus species (Teleostei: Gobioidei: Sicydiinae)

机译：从地方特有到广泛分布：三种两栖无尾蝠属的系统志（Teleostei：Gobioidei：Sicydiinae）

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摘要

Island freshwater habitats are colonised by amphidromous fish, which display an oceanic larval phase while the rest of their hie cycle takes place in rivers. In the present study we evaluated the population structure of the widespread Sicyopterus lagocephalus (Gobioidei) over its Indo-Pacific distribution range, which encompasses the island chain (Indonesia - Papua New Guinea - Malaysia) known as the Indo-Pacific Barrier (IPB). Additional analysis of 2 endemic species, S. aiensis (Vanuatu) and S. sarasini (New Caledonia), living in sympatry with S. lagocephalus, represented comparative material and was used as the basis for an assessment of endemism and dispersal. Mitochondrial cytochrome b sequence data were obtained for 332 S. lagocephalus, 210 S. aiensis and 87 S. sarasini across each species' range. Haplotype networks and F-statistics were used to determine patterns of population structure. A discrete phylogeo-graphic diffusion model under a time-scaled coalescent tree prior was used to assess the history of the spatial expansion of S. lagocephalus across its wide spatial distribution. S. lagocephalus demonstrates high population structure across the IPB. It also displays a strong structure between Tahiti and all other locations sampled. No other population structure was identified in the entire western Pacific. Phylogenetic reconstruction and coalescence analysis indicate that the oldest population originated in the western Pacific, from which the eastern Pacific and the Indian Oceans were colonised. For the 2 endemic species, no genetic structure was identified across their respective ranges. From the genetic results associated with known elements of the life history of these species, we improved our understanding of the simultaneous existence of geographically close endemic species and a widespread species.
机译：岛上的淡水栖息地被两栖鱼类定居，两栖鱼类表现出海洋幼虫期，而其其余的生命周期则发生在河流中。在本研究中，我们评估了分布在印度洋-太平洋分布范围内的宽头水蚤（Sicyopterus lagocephalus，Gobioidei）的种群结构，该分布范围包括被称为印度洋-太平洋屏障（IPB）的岛链（印度尼西亚-巴布亚新几内亚-马来西亚）。与S. lagocephalus并存的2个地方特有物种S. aiensis（瓦努阿图）和S. sarasini（新喀里多尼亚）的其他分析为比较材料，用作评估地方性和传播性的基础。在每个物种的范围内，分别获得了332头头参，210埃里希菌和sarasini的线粒体细胞色素b序列数据。使用单倍型网络和F统计量确定种群结构的模式。在时间尺度的聚结树先验下，采用离散的系统地理学扩散模型评估了S. lagocephalus在整个空间分布中的空间扩展历史。腹泻链球菌显示出整个IPB的高种群结构。它还显示了大溪地和所有其他采样地点之间的牢固结构。在整个西太平洋，没有其他人口结构被确定。系统发育重建和合并分析表明，最古老的种群起源于西太平洋，东太平洋和印度洋是从那里定居的。对于这两个特有物种，没有在其各自范围内鉴定出遗传结构。从与这些物种生活史的已知元素相关的遗传结果，我们改善了对地理上紧密的地方物种和广泛物种同时存在的理解。

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  • 来源
    《Marine ecology progress series》 |2012年第30期|p.269-285|共17页
  • 作者

    C. Lord; J. Lorion; A. Dettai; S. Watanabe; K. Tsukamoto; C. Cruaud; P. Keith;

  • 作者单位

    Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan,Museum National d'Histoire Naturelle, DMPA, UMR 7208, Ichtyologie, CP 26, 57 rue Cuvier, 75231 Paris cedex 05, France;

    Marine Ecosystems Research Department - Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka 237-0061, Japan;

    Museum National d'Histoire Naturelle, Systematique et Evolution, UMR 7138, Service de Systematique Moleculaire, CP 26, 57 rue Cuvier, 75231 Paris cedex 05, France;

    Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan;

    Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan;

    Genoscope, Centre National de Sequengage, 2, rue Gaston Cremieux, CP5706, 91057 Evry cedex, France;

    Museum National d'Histoire Naturelle, DMPA, UMR 7208, Ichtyologie, CP 26, 57 rue Cuvier, 75231 Paris cedex 05, France;

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  • 正文语种 eng
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  • 关键词

    sicyopterus; amphidromy; pelagic larval duration; biogeographical barrier; endemism; indo-pacific; cytochrome b; population structure;

    机译：sicyopterus两亲上层幼体持续时间生物地理屏​​障;地方性印太平洋细胞色素b;人口结构;

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