The biogeographic history of eelpouts and related fishes: Linking phylogeny, environmental change, and patterns of dispersal in a globally distributed fish group
The biogeographic history of eelpouts and related fishes: Linking phylogeny, environmental change, and patterns of dispersal in a globally distributed fish group
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鳗鲡及相关鱼类的生物地理学历史：将系统发育、环境变化和全球分布的鱼类群的扩散模式联系起来
DOI：
10.1016/j.ympev.2021.107211
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发表时间：
2021
影响因子：
4.1
通讯作者：
Kelley, Joanna L.
中科院分区：
文献类型：
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作者：
Hotaling, Scott;Borowiec, Marek L.;Lins, Luana S.F.;Desvignes, Thomas;Kelley, Joanna L.
现代遗传数据集为了解不同分类群的进化起源提供了前所未有的机会。当关键事件的时间已知时，就可以在主要现象（例如，主要海洋变冷）的背景下研究生物地理历史。在这项研究中，我们研究了 Zoarcoidei 亚目的生物地理学历史，Zoarcoidei 是一个全球分布的鱼类群，其中包括居住在两极的物种，这些物种产生抗冻蛋白以在长期低于冰点的温度下生存。我们首先为该群体生成了多位点、时间校准的系统发育。然后，我们使用生物地理模型来重建整个树的祖先范围，并量化生物地理事件的类型和频率（例如，创始人、分散）。根据这些结果，我们考虑了南冰洋和北冰洋的冷却可能如何影响了该群体的进化史，其中南冰洋和北冰洋分别在 10-1500 万年前 (Mya) 和 2-3 Mya 之前达到了现在的冰点以下温度，其中重点关注的是种类最丰富、分布最广泛的鳗鲡科（Zoarcidae 科）。我们的系统发育结果阐明了 Zoarcoidei 分类学，并表明该类群在渐新世~31-32 Mya 开始多样化，所有科的起源中心都在北温带水域。区域内物种形成是该群体历史上最常见的生物地理事件（占所有事件的 80%），其次是扩散（20%）。最后，我们只找到了证据，尽管有限，表明海洋冷却支撑了过去 1000 万年生活在南极高地的鳗鲡的多样化。
Modern genetic data sets present unprecedented opportunities to understand the evolutionary origins of diverse taxonomic groups. When the timing of key events is known, it is possible to investigate biogeographic history in the context of major phenomena (e.g., cooling of a major ocean). In this study, we investigated the biogeographic history of the suborder Zoarcoidei, a globally distributed fish group that includes species inhabiting both poles that produce antifreeze proteins to survive chronic subfreezing temperatures. We first generated a multi-locus, time-calibrated phylogeny for the group. We then used biogeographic modeling to reconstruct ancestral ranges across the tree and to quantify the type and frequency of biogeographic events (e.g., founder, dispersal). With these results, we considered how the cooling of the Southern and Arctic Oceans, which reached their present-day subfreezing temperatures 10–15 million years ago (Mya) and 2–3 Mya, respectively, may have shaped the group’s evolutionary history, with an emphasis on the most speciose and widely distributed family, eelpouts (family Zoarcidae). Our phylogenetic results clarified the Zoarcoidei taxonomy and showed that the group began to diversify in the Oligocene ~31–32 Mya, with the center of origin for all families in north temperate waters. Within-area speciation was the most common biogeographic event in the group’s history (80% of all events) followed by dispersal (20%). Finally, we only found evidence, albeit limited, for ocean cooling underpinning diversification of eelpouts living in the high Antarctic over the last 10 million years.