Phylogeography of the yellowfin goby Acanthogobius flavimanus in native and non-native distributions
Phylogeography of the yellowfin goby Acanthogobius flavimanus in native and non-native distributions
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DOI：
10.1007/s00227-017-3137-6
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发表时间：
2017-04
期刊：
影响因子：
2.4
通讯作者：
S. Hirase;S. Chambers;K. Hassell;M. Carew;V. Pettigrove;K. Soyano;M. Nagae;W. Iwasaki
中科院分区：
文献类型：
--
作者：
S. Hirase;S. Chambers;K. Hassell;M. Carew;V. Pettigrove;K. Soyano;M. Nagae;W. Iwasaki
物种引进已被认为是全世界海洋环境的主要威胁之一。本地和非本地种群之间遗传数据的比较可以提供关键信息，例如殖民过程中的起源和人口统计数据，这有助于了解海洋环境中入侵成功的机制。黄鳍虾虎鱼（Acanthogobius flavimanus）是一种原产于亚洲东北部的大型虾虎鱼，通常栖息在海湾、河口和河流的泥泞底部，在入侵美国和澳大利亚沿海地区时被视为害虫。在这里，我们分析了来自本地和非本地分布的几个黄鳍虾虎鱼种群的线粒体 DNA 控制区序列。系统发育树没有显示出种内谱系，这与之前的系统发育地理学研究形成鲜明对比，之前的系统发育研究表明日本列岛周围的其他沿海海洋虾虎鱼存在深刻的遗传分化。另一方面，在种群水平上，我们发现在本土分布上南北群体之间存在显着的遗传分化，这可能归因于南方群体的快速人口扩张事件。我们的分析表明，北加州种群的起源是东京湾，但我们无法确定南加州和墨尔本种群的原始来源种群。这些人群表现出截然不同的遗传多样性，表明他们有不同的人口历史。这项研究为黄鳍虾虎鱼多个种群的遗传多样性提供了新的视角，并提供了遗传多样性与入侵成功之间关系的一个例子。
Species introductions have been recognized as one of the principal threats to marine environments worldwide. Comparison of genetic data between native and non-native populations can provide key information, such as origin and population demography during the colonization process, which assists in understanding the mechanisms of invasion success in marine environments. The yellowfin goby,Acanthogobius flavimanus, is a large goby native to northeastern Asia, typically inhabiting muddy bottoms of bays, estuaries, and rivers, and is considered a pest where it has invaded coastal areas of the United States and Australia. Here, we analyzed mitochondrial DNA control region sequences of several yellowfin goby populations from both native and non-native distributions. The phylogenetic tree showed no intra-specific lineages, which is in contrast with previous phylogeographic studies that have shown deep genetic divergence in other coastal marine gobies around the Japanese archipelago. On the other hand, at the population level, we found significant genetic differentiation between northern and southern groups in the native distribution, which may be attributed to a rapid population expansion event of the southern group. Our analyses suggest that the origin of the northern California population is Tokyo Bay, but we were unable to identify the original source populations of the southern California and Melbourne populations. These populations showed greatly differing genetic diversities, suggesting their different demographic histories. This study contributes a new perspective on the genetic diversity of multiple populations of the yellowfin goby, as well as representing an example of the relationships between genetic diversity and invasion success.