CSIRO Marine & Atmospheric Research, Wealth from Oceans Flagship, GPO Box 1538, Hobart TAS 7001, Australia.
J Fish Biol. 2011 Oct;79(4):954-68. doi: 10.1111/j.1095-8649.2011.03068.x. Epub 2011 Aug 26.
A new species of spurdog, Squalus formosus n. sp., from the lower continental shelf and upper continental slope off the coast of Taiwan and southern Japan, is described. It belongs to the 'highfin megalops group', the members of which share a short snout, high dorsal fins, robust dorsal spines, tricuspid denticles and a white posterior caudal margin. Squalus formosus is most similar to Squalus albifrons, a recently described species from eastern Australia, but differs in some morphological characters and fin colouration. Squalus formosus is sympatric with three other species of Squalus in Taiwanese waters, i.e. Squalus brevirostris, Squalus japonicus and Squalus mitsukurii, and can be readily distinguished from these in the following combination of characters: tall and upright first dorsal fin, with a tall and robust spine, short and bluntly pointed snout, white caudal-fin posterior margin and first dorsal fin with a white anterior margin parallel with dorsal spine. This new species was considered by some authors to be conspecific with Squalus blainville from the eastern Atlantic Ocean, but the results of this study reveal that it is probably endemic to Taiwan and southern Japan.
一种新的长尾鲨，即美丽长尾鲨（Squalus formosus n. sp.），来自台湾和日本南部沿海大陆架的下部和大陆坡，被描述。它属于“高鳍幼鲨群”，该群体成员具有短吻、高背鳍、强壮的背棘、三叉齿和白色的后尾缘。美丽长尾鲨与最近在澳大利亚东部描述的物种白斑长尾鲨（Squalus albifrons）最为相似，但在一些形态特征和鳍色上有所不同。美丽长尾鲨与台湾水域的其他三种长尾鲨（短吻长尾鲨、日本长尾鲨和灰鲭鲨）同域分布，可通过以下特征组合与这些物种区分开来：高大直立的第一背鳍，高大而强壮的棘，短而钝的吻，白色的尾鳍后缘和第一背鳍的前缘与背棘平行。一些作者认为这种新物种与大西洋东部的灰三齿鲨（Squalus blainville）是同种，但本研究的结果表明，它可能是台湾和日本南部的特有种。
