Paraliparis hokuto, a new snailfish (Cottoidei: Liparidae) from Suruga Bay, Japan, and a new record of the rare species Paraliparis atramentatus Gilbert and Burke 1912
Paraliparis hokuto, a new snailfish (Cottoidei: Liparidae) from Suruga Bay, Japan, and a new record of the rare species Paraliparis atramentatus Gilbert and Burke 1912
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DOI：
10.1007/s10228-019-00717-6
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发表时间：
2019-10-29
影响因子：
1.2
通讯作者：
Fukui, Atsushi
中科院分区：
文献类型：
--
作者：
Murasaki, Kenta;Takami, Munehiro;Fukui, Atsushi
本文描述了在骏河海槽北方1，432 ~ 1，562 m深度范围内采集的两个新螺类Paraliparis hokuto。它可以通过以下特征的组合与所有目前公认的同源物区分开来：72个总椎骨; 65背鳍条; 60或61尾鳍条; 22或23胸鳍条; 6尾鳍条; 3个胸鳍近端桡骨，全部无切口; 5个幽门盲囊，最长的盲囊约为1.5。HL占60%;牙齿弱，容易弯曲或损坏，在下颚完全不对称;在共同的凹处成对的下巴孔;存在鳃盖瓣;胸鳍基部的最上部水平地与眼睛的中心或下缘水平。描述了稀有蜗牛鱼Paraliparis atramentatus吉尔伯特和伯克（1912）的一个标本，该标本采集于骏河湾西部大陆坡253至1，282米深处，仅代表该物种的第三个例子，也是骏河湾的第一个记录，并指出了种内齿尖形状的变异。
The new snailfish Paraliparis hokuto is described from two specimens collected between 1,432 and 1,562 m depth in the northern part of the Suruga Trough. It can be distinguished from all currently recognized congeners by the following combination of characters: 72 total vertebrae; 65 dorsal-fin rays; 60 or 61 anal-fin rays; 22 or 23 pectoral-fin rays; 6 caudal-fin rays; 3 pectoral proximal radials, all unnotched; 5 pyloric caeca, longest caecum ca. 60% of HL; teeth weak, easily bent or damaged, completely uniserial in lower jaw; paired chin pores in common pit; opercular flap present; uppermost part of pectoral-fin base horizontally level with center or lower margin of eye. A single specimen of the rare snailfish Paraliparis atramentatus Gilbert and Burke 1912, collected from 253 to 1,282 m depth on the continental slope in western Suruga Bay, and representing only the third example of the species and first record from Suruga Bay, is described and intraspecific variability in teeth tip shape noted.