https://scholars.lib.ntu.edu.tw/handle/123456789/642406
標題: | Gymnocranius indicus, a new large-eye seabream from the Indian Ocean | 作者: | WEI-JEN CHEN Miki, Ryohei Nevill, John Borsa, Philippe |
關鍵字: | COI gene sequence | description | Gymnocranius sp. H | Gymnocranius superciliosus | morphology | new species | 公開日期: | 4-四月-2024 | 卷: | 104 | 來源出版物: | Journal of the Marine Biological Association of the United Kingdom | 摘要: | Gymnocranius indicus sp. nov. is described as a new species of the fish subfamily Monotaxinae (Sparoidea: Lethrinidae), a group of commercially important species distributed throughout the Indo-West Pacific, on the basis of 16 specimens collected from the Indian Ocean. The new species shares the following characters with its western Pacific sibling, the eyebrowed large-eye seabream, G. superciliosus: elongate body, distinctive and conspicuous dark patch above the eye, prominent forehead, moderately forked caudal fin, its lobes slightly convex inside, flank silvery, and reddish-to-red dorsal, pectoral, anal and caudal fins. However, principal component analysis based on seven morphological variables distinguished most specimens from the Indian Ocean from G. superciliosus. The most influential variable in the analysis was the eye diameter, significantly larger in the new species than in G. superciliosus. All specimens of the new species that were examined also lacked blue ornamentation on the snout and cheek. At the mitochondrial cytochrome oxidase subunit-I locus, the mean genetic p-distance between the two species was 0.039. With Gymnocranius indicus sp. nov., the genus now includes 12 valid nominal species; three additional species remain undescribed. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/642406 | ISSN: | 00253154 | DOI: | 10.1017/S0025315424000274 |
顯示於: | 海洋研究所 |
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