Depth as a driver of evolution in the deep sea: Insights from grenadiers (Gadiformes: Macrouridae) of the genus Coryphaenoides
Depth as a driver of evolution in the deep sea: Insights from grenadiers (Gadiformes: Macrouridae) of the genus Coryphaenoides
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DOI：
10.1016/j.ympev.2016.07.027
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发表时间：
2016-11-01
影响因子：
4.1
通讯作者：
Hoelzel, A. Rus
中科院分区：
文献类型：
--
作者：
Gaither, Michelle R.;Violi, Biagio;Hoelzel, A. Rus
在这里，我们考虑深度作为深海鱼类进化驱动力的作用。我们提供了 Coryphaenoides 属（Gadiformes：Macuridae）的系统发育，它代表了这些物种的栖息地利用和分布的广度。在我们一致的系统发育物种中，在深海深度（>4000米）发现的物种形成了一个得到充分支持的谱系，有趣的是，其中还包括两个非深海物种，C. striaturus和C. murryi，它们从该谱系的基底节点分叉出来。生物地理学分析表明，该属可能起源于当代物种多样性最高的南洋和太平洋。深海谱系似乎是继而出现的，并且可能起源于南/太平洋，但该谱系的多样化发生在北大西洋。除北太平洋的 C. yaquinae 和南大洋的 C. filicauda 外，所有深海物种均在北大西洋发现。深海物种往往具有广泛的深度范围和广泛的分布，这表明深海的稳定性和在广泛深度上生活的能力可能会促进种群的连通性并促进大范围的活动。我们还确认形态学上定义的亚属与我们的系统发育不一致，并且巨型掷弹兵（以前称为胸信天翁）属于Coryphaenoides，这表明需要对该属进行分类学修订。我们讨论了我们的发现对于理解该属的辐射和多样化的影响，以及适应深渊的可能作用。 (C) 2016 年作者。由爱思唯尔公司出版
Here we consider the role of depth as a driver of evolution in a genus of deep-sea fishes. We provide a phylogeny for the genus Coryphaenoides (Gadiformes: Macrouridae) that represents the breadth of habitat use and distributions for these species. In our consensus phylogeny species found at abyssal depths (>4000 m) form a well-supported lineage, which interestingly also includes two non -abyssal species, C. striaturus and C. murrayi, diverging from the basal node of that lineage. Biogeographic analyses suggest the genus may have originated in the Southern and Pacific Oceans where contemporary species diversity is highest. The abyssal lineage seems to have arisen secondarily and likely originated in the Southern/Pacific Oceans but diversification of this lineage occurred in the Northern Atlantic Ocean. All abyssal species are found in the North Atlantic with the exception of C. yaquinae in the North Pacific and C filicauda in the Southern Ocean. Abyssal species tend to have broad depth ranges and wide distributions, indicating that the stability of the deep oceans and the ability to live across wide depths may promote population connectivity and facilitate large ranges. We also confirm that morphologically defined subgenera do not agree with our phylogeny and that the Giant grenadier (formerly Albatrossia pectoralis) belongs to Coryphaenoides, indicating that a taxonomic revision of the genus is needed. We discuss the implications of our findings for understanding the radiation and diversification of this genus, and the likely role of adaptation to the abyss. (C) 2016 The Authors. Published by Elsevier Inc.