Impact of glacial cycles and ocean currents on radiation events in the Japanese turban snail Lunella coreensis

IF 5.1 2区地球科学 Q1 LIMNOLOGY

Limnology and Oceanography Letters Pub Date : 2025-03-18 DOI:10.1002/lol2.70005

Davin H. E. Setiamarga, Kazuki Hirota, Satoko Nakashima, Masa‐aki Yoshida, Shinnosuke Teruya, Takenori Sasaki

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Abstract

The Japanese turban snail Lunella coreensis is sensitive to ocean currents due to its short pelagic larval stage and moderate dispersal ability, making it an ideal model for studying genetic diversity shaped by paleoclimatic shifts. In this study, we analyzed the mitochondrial genes COI and 12S of museum samples collected from various coasts across Japan and identified 10 haplogroups divided into Pacific Ocean and Japan Sea clades, influenced by Kuroshio and Tsushima currents. Divergence time estimates indicate radiation between 3000 and 77,000 yr ago, coinciding with the last ice age, supported by fossil evidence in Japan. Glaciation cycles likely caused genetic isolation and exchange. Rapid radiation between 18,000 and 1000 yr ago aligns with climatic changes during the last glacial maximum. Effective population size estimates indicate past bottlenecks. These findings reveal how historical environmental events shaped L. coreensis genetic diversity, laying the groundwork for future sclerochronological research on marine biodiversity.

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冰川旋回和洋流对日本圆螺月螺辐射事件的影响

日本冠螺（Lunella coreensis）的远洋幼虫期短，扩散能力中等，对洋流敏感，是研究古气候变化形成的遗传多样性的理想模型。在这项研究中，我们分析了在日本不同海岸收集的博物馆样本的线粒体基因COI和12S，并鉴定了10个单倍群，分为太平洋和日本海分支，受黑潮和对马流的影响。分化时间估计表明，辐射发生在3000年至77000年前，与最后一个冰河时期相吻合，这一点得到了日本化石证据的支持。冰期循环可能造成遗传隔离和交换。18000至1000年前的快速辐射与末次冰期极大期的气候变化一致。有效的人口规模估计表明过去的瓶颈。这些发现揭示了历史环境事件如何塑造了岩心藻的遗传多样性，为未来海洋生物多样性的年代研究奠定了基础。

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来源期刊

Limnology and Oceanography Letters Multiple-

CiteScore

10.00

自引率

3.80%

发文量

审稿时长

25 weeks

期刊介绍： Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.