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首页> 外文期刊>Marine biology >Population structure in Banggai cardinalfish, Pterapogon kauderni, a coral reef species lacking a pelagic larval phase
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Population structure in Banggai cardinalfish, Pterapogon kauderni, a coral reef species lacking a pelagic larval phase

机译:邦加红衣主教鱼类(Pterapogon kauderni)的种群结构,缺少浮游幼体的珊瑚礁物种

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摘要

Previous studies on two reef fish lacking a pelagic larval phase (Acanthochromis polyacanthus and Embiotoca jacksoni) revealed features that may be characteristic of their lifestyle: (1) low levels of gene flow, (2) frequent population bottlenecks, and (3) strong phylogeographic breaks, all within their over 1,000 km coastal geographic ranges. The present study tested the predictive nature of these three characteristics in another species lacking a pelagic larval stage, but with a very restricted distribution ( < 10,000 km~2). The Banggai cardinalfish, Pterapogon kauderni Koumans, 1933, is a mouthbrooding species occurring in the Banggai Archipelago (eastern Indonesia). Fish were captured in January and February (2001, 2002). The mitochondrial control region of 122 individuals from 22 locations was sequenced. P. kauderni individuals clustered in two reciprocally monophyletic clades corresponding to a southwestern population (restricted to the southwest of Bangkulu Island) and all northern and eastern populations, which included all the remaining samples. Data were compatible with reduced gene flow and the presence of severe bottlenecks; however, small sample sizes and limited genetic variability in P. kauderni prevented a definitive conclusion. Further studies using larger samples and more rapidly evolving molecular markers may provide enough power to conclusively test our hypotheses.
机译:先前对两种缺少上层幼体阶段的礁鱼(棘刺棘鱼和千金鱼)的研究表明,其生活方式可能具有以下特征:(1)基因流水平低;(2)种群瓶颈频繁;以及(3)强系统地理学都在其超过1,000公里的沿海地理范围内。本研究测试了这三个特征在另一种缺乏上层幼体阶段但分布非常受限制(<10,000 km〜2)的物种中的预测性质。 Banggai红衣主教鱼类Pterapogon kauderni Koumans,1933年,是发生在Banggai群岛(印度尼西亚东部)的令人垂涎的物种。在1月和2月(2001年,2002年)捕获了鱼类。对来自22个位置的122位个体的线粒体控制区进行了测序。 P. kauderni个体聚集在两个相对应的单系进化枝中,对应于西南种群(仅限于Bangkulu岛西南)以及所有北部和东部种群,其中包括所有剩余样本。数据与减少的基因流和严重的瓶颈兼容;然而,P。kauderni的小样本量和有限的遗传变异性无法得出明确的结论。使用更大的样本和更迅速发展的分子标记进行的进一步研究可能会提供足够的能力来结论性地检验我们的假设。

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  • 来源
    《Marine biology》 |2004年第4期|p.803-810|共8页
  • 作者

    G. Bernardi; A. Vagelli;

  • 作者单位

    Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, CA 95060, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境生物学;
  • 关键词

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