A new deep-water chimaerid species, Hydrolagus lusitanicus n. sp., from off mainland Portugal with a proposal of a new identification key for the genus Hydrolagus(Holocephali: Chimaeridae) in the north-east Atlantic
A new deep-water chimaerid species, Hydrolagus lusitanicus n. sp., from off mainland Portugal with a proposal of a new identification key for the genus Hydrolagus(Holocephali: Chimaeridae) in the north-east Atlantic
复制标题
深水嵌合体新种 Hydrolagus lusitanicus n.
DOI：
10.1111/j.0022-1112.2005.00774.x
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发表时间：
2005
影响因子：
2
通讯作者：
L. Gordo
中科院分区：
文献类型：
--
作者：
Teresa Moura;I. Figueiredo;P. Bordalo;C. Almeida;L. Gordo
一种与 Hydrolagus pallidus 密切相关的新银鲛科物种，是通过商业延绳钓在葡萄牙大陆坡（东北大西洋）捕获的 13 个标本描述的。 1600米新物种体型庞大，体色呈玫瑰色至浅棕色。卢西塔尼水螅 n.sp.呈现出一系列外部形态特征，使其与其同类明显区分开来，特别是胸鳍长度：胸鳍宽度和腹鳍长度：腹鳍宽度的比率：背棘有锯齿状后缘；牙板上有大量的脊。此外，雄性的额带钩的形状和数量、骨盆前带的刺数量以及胸鳍边缘的长度也存在差异。
A new chimaerid species closely related to Hydrolagus pallidus is described from 13 specimens captured on the Portuguese continental slope (north-east Atlantic) by commercial longliners at depths of c. 1600 m. The new species is large-bodied with a rose to light brown body colouration. Hydrolagus lusitanicus n.sp. presents a combination of external morphological characters that allow it to be clearly differentiated from its congeners, in particular, the ratios of pectoral fin length: pectoral fin width and pelvic fin length: pelvic fin width: in having a serrated posterior edge of the dorsal spine; a high number of ridges in the dental plates. Additionally in males, there are differences on the shape and number of hooks in the frontal tenacula, on the number of spines in the prepelvic tenacula and on the length of the pectoral fin margin.