北美鳉鱼(鲤形目)的历史生物地理学再现了墨西哥湾流域的地理历史

IF 3 2区 生物学 Q1 ZOOLOGY Zoological Journal of the Linnean Society Pub Date : 2024-10-26 DOI:10.1093/zoolinnean/zlae105
Sonia Gabriela Hernández-Ávila, Christopher W Hoagstrom, Wilfredo A Matamoros
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引用次数: 0

摘要

我们分析了鲤形目(Teleostei)一个主要支系内的系统发育关系,该支系包括北美鳉鱼的五个科。我们利用 130 个物种的 5 个基因的 DNA 序列以及 4 个化石校准和 3 个次级校准,生成了一个时间校准的系统发育关系。我们估计了每个节点的多样化率、祖先地区和祖先栖息地。我们在详细的生物地理学综合分析中对研究结果进行了解释。结果表明,该支系产生于墨西哥湾沿岸的始新世。除了鲤形目在大约 10.9 百万年后出现了加速分化外,其他各科的物种分化速度是一致的。在其他科中,胎生或海洋到淡水的过渡都与物种的加速分化无关。海平面的波动可能刺激了沿岸的扩散和沧海桑田的循环,从而形成了一个物种分化泵。物种多样化还包括许多从沿海祖先向内陆移民的情况。对于高地类群来说,古代河流的流向与类群的分布相一致,其中包括古德科(Goodeidae)和箭鱼科(Fundulus)的神秘分界。高地鱼类的多样化是通过冲积地貌或构造活动地貌中的障碍迁移实现的。鳉鱼还表现出很强的环境耐受性,能在不适合大多数其他鱼类生存的恶劣边缘环境中生存。因此,结合支系的古老性、适应性、动态地理和持久性,可以解释新大陆鳉鱼的生活多样性。
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Historical biogeography of North American killifishes (Cyprinodontiformes) recapitulates geographical history in the Gulf of México watershed
We analysed phylogenetic relationships within a major clade of Cyprinodontiformes (Teleostei) that includes five families of North American killifishes. We used DNA sequences from five genes for 130 species, with four fossil calibrations and three secondary calibrations, to generate a time-calibrated phylogeny. We estimated diversification rates, ancestral areas, and ancestral habitats for each node. Findings were interpreted within a detailed biogeographical synthesis. The results indicate that the clade arose in the Eocene along the Gulf of México coast. The speciation rate was uniform through time, except for acceleration in Cyprinodontidae after ~10.9 Mya. In other families, neither viviparity nor marine-to-freshwater transition was associated with accelerated speciation. Sea-level fluctuations might have created a speciation pump by stimulating cycles of dispersal and vicariance along the coast. Diversification also included many cases of inland immigration from coastal ancestors. For upland lineages, ancient river drainages accord with lineage distributions, including enigmatic disjunctions in Goodeidae and Fundulus. Diversification in uplands occurred via barrier displacement within alluvial or tectonically active landscapes. Killifishes also display high environmental tolerance and persist within harsh, peripheral environments unsuitable for most other fishes. Hence, a combination of clade antiquity, adaptability, dynamic geography, and persistence can explain the living diversity of New World killifishes.
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来源期刊
CiteScore
6.50
自引率
10.70%
发文量
116
审稿时长
6-12 weeks
期刊介绍: The Zoological Journal of the Linnean Society publishes papers on systematic and evolutionary zoology and comparative, functional and other studies where relevant to these areas. Studies of extinct as well as living animals are included. Reviews are also published; these may be invited by the Editorial Board, but uninvited reviews may also be considered. The Zoological Journal also has a wide circulation amongst zoologists and although narrowly specialized papers are not excluded, potential authors should bear that readership in mind.
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