S. Myoung, J. Myoung, Min S. Woo, M. Kim, M. Kang, J. Park
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引用次数: 0
Abstract
Discovering tropical marine species outside of their distribution limits is important for evaluating the impact of climate change on marine ecosystems. One specimen (31.6 mm standard length) of a tropical fish, Chromis weberi Fowler et Bean, 1928, representing the family Pomacentridae, was first recorded from Jeju Island, Korea, on 8 December 2021. It was characterized by black posterior margins of the preopercle and opercle and black upper and lower lobes of the caudal fin. A specimen of this species collected from Munseom was distinguished from Chromis xanthura (Bleeker, 1854) based on distinct differences in the tips of the upper and lower caudal fin lobes, which are not black in C. xanthura. In addition, C. weberi was easily distinguished from the other four species in the genus Chromis, by the mitochondrial DNA cytochrome c oxidase subunit I gene sequence (345 bp), with genetic distances ranging from 0.130 to 0.252. This study documents the first record of C. weberi in temperate Korean waters, implying a poleward range expansion for this species. The Korean name ‘geom-eun-jeom-ggo-ri-ja-ri-dom’ has been proposed for C. weberi.
发现分布范围之外的热带海洋物种对于评估气候变化对海洋生态系统的影响非常重要。2021年12月8日,在韩国济州岛首次记录到一个热带鱼标本(标准长度31.6毫米),该标本名为Chromis weberi Fowler et Bean,1928年,代表朴科。其特征是前鳍和操纵管的黑色后缘以及尾鳍的黑色上下叶。从Munseom采集的一个该物种的标本与黄鳍藻(Bleeker,1854)的区别在于尾鳍上下叶尖端的明显差异,而黄鳍藻的尾鳍不是黑色的。此外,通过线粒体DNA细胞色素C氧化酶亚基I基因序列(345bp),C.weberi很容易与Chromis属的其他四个物种区分开来,遗传距离在0.130至0.252之间。这项研究记录了在朝鲜温带水域首次记录到的韦氏C.weberi,这意味着该物种的范围向极地扩展。“geom eun jeom ggo ri ja ri dom”的韩语名称已被提议用于C.weberi。
期刊介绍:
ACTA ICHTHYOLOGICA ET PISCATORIA (AIeP) is an international, peer-reviewed scientific journal that publishes articles based on original experimental data or experimental methods, or new analyses of already existing data, in any aspect of ichthyology and fisheries (fin-fish only).