Parupeneus williamsi, a new species of goatfish (Perciformes: Mullidae) endemic to the Marquesas Islands, French Polynesia
Parupeneus williamsi, a new species of goatfish (Perciformes: Mullidae) endemic to the Marquesas Islands, French Polynesia
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DOI：
10.1007/s10228-020-00753-7
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发表时间：
2020-05
影响因子：
1.2
通讯作者：
Shunta Shibuya;H. Motomura
中科院分区：
文献类型：
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作者：
Shunta Shibuya;H. Motomura
根据从法属波利尼西亚马克萨斯群岛采集的 12 个标本（标准长度为 43.9-234.3 毫米）描述了一种新的山羊鱼物种，Parupeneus williamsi。该种与 Parupeneus multifasciatus (Quoy and Gaimard 1825) 非常相似，共同拥有白色至淡黄色的触须，其尖端通常延伸超出前鳃盖骨的后缘，躯干上有两到三个黑色垂直带（包括不明显的带），上尾柄上有一个黑色鞍状带。然而，该新种与P.多带鱼的所有带和鞍都非常模糊，密集的黑素细胞均匀分布在臀鳍膜上（保存的标本），上颌在大于 50 毫米 SL 的标本中略细长和较短，第二臀鳍软条稍长。先前发表的线粒体细胞色素序列分子分析支持了这两个物种之间的形态差异。虽然P. multifasciatus 广泛分布于东印度洋和太平洋，P.威廉斯是马克萨斯群岛的特有种。
A new species of goatfish,Parupeneus williamsi, is described on the basis of 12 specimens (43.9–234.3 mm in standard length) collected from the Marquesas Islands, French Polynesia. The species closely resemblesParupeneus multifasciatus(Quoy and Gaimard 1825) in sharing white to yellowish barbels, its tips usually extending beyond the posterior margin of the preopercle, two or three blackish vertical bands (including indistinct bands) on the trunk, and a blackish saddle on the upper caudal peduncle. However, the new species is distinguished fromP. multifasciatusby having all of the bands and saddle very indistinct, dense melanophores uniformly distributed on the anal-fin membranes (preserved specimens), upper jaw slightly slender and shorter in specimens larger than 50 mm SL, and slightly longer second anal-fin soft ray. The morphological differences between the two species are supported by a previously published molecular analysis of mitochondrial cytochromebsequences. AlthoughP. multifasciatusis widely distributed in the eastern Indian and Pacific oceans,P. williamsiis endemic to the Marquesas Islands.