Four new deepwater Ophichthus (Anguilliformes: Ophichthidae) from Japan with a redescription of Ophichthus pallens (Richardson 1848)
Four new deepwater Ophichthus (Anguilliformes: Ophichthidae) from Japan with a redescription of Ophichthus pallens (Richardson 1848)
复制标题
来自日本的四种新的深水蛇夫座（Anguilliformes：Ophichthidae）以及对 Ophichthus pallens 的重新描述（Richardson 1848）
DOI：
10.1007/s10228-018-00677-3
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发表时间：
2019
影响因子：
1.2
通讯作者：
F. Tashiro
中科院分区：
文献类型：
--
作者：
Yusuke Hibino;J. Mccosker;F. Tashiro
本文报道了日本蛇鳗属Ophichthus kusanagi、O lupus、O.寡嗜酸菌和O.从静冈县骏河湾、三重县尾濑外海和高知县土佐湾采集的草柳蛇鳗（Ophichthuskusanagi）与四个相似的同类区别在于具有1 + 4个眶上孔和2个前鳃盖孔、13条胸鳍鳍条、较少的总椎骨（158-163）、较长的尾巴[占总长度（TL）的58-60%]、眼小[占头长的7.5-9.0%]，吻尖，上唇鼻孔间有一个低的结节，牙齿相对细长，胸鳍尖。（20-25% HL），以及背鳍起点的位置（略在胸鳍尖后面）;它的眶上孔和下颌孔可以与相似的物种区分开来（1 + 4和6或7），下颌骨和犁骨上的牙齿排列（几乎是一致的），它健壮的身体（深度2.6-3.1% TL），股骨头稍大（7.8-8.1% TL），较长和尖锐的吻（24% HL），较长的上颌（45-48% HL），上唇沿着无突起，背鳍边缘狭窄，颜色较深。（46和121）.山川蛇鳗（Ophichthus yamakawai）采自高知县，其特征为沿着侧线有大斑点，有许多肛前椎骨和全椎骨（67和172）。我们将一个不确定的种Ophichthus stenopterus Cope 1871与Ophichthus pallens的异名联系起来（Richardson 1848），一种在中国被遗忘的种; Pisodonophis zophistiusJordan和Snyder 1901被认为是Ophichthus的有效种，也是Ophichthys intermediusRegan 1905的高级异名; Ophichthus habereri Franz 1910，最初描述于日本中部横滨，Sisodonophis sangjuensisJi and Kim 2011为Ophichthus的次异名。本文提供了日本蛇鳗属种及其近缘类群Pisodonophisis的检索表。
In this paper, new and uncertain Japanese snake eels of the genusOphichthusare treated.Ophichthus kusanagi,O. lupus,O. oligosteusandO. yamakawaiare herein described as new species.Ophichthus kusanagi, collected from Suruga Bay of Shizuoka Prefecture, off Owase, Mie Prefecture, and Tosa Bay, Kochi Prefecture, is distinguishable from four similar congeners by having one + four supraorbital and two preopercular pores, 13 pectoral-fin rays, fewer total vertebrae (158–163), a longer tail [58–60% of total length (TL)], a small eye [7.5–9.0% of head length (HL)], an acute snout, a low knob on upper lip between nostrils, relatively slender teeth, and a pointed pectoral fin.Ophichthus lupus, collected from the East China Sea, is characterized by its numerous total vertebrae (180–182), shorter pectoral fins (20–25% HL), and the position of the dorsal-fin origin (slightly behind the pectoral-fin tip); it can be distinguished from similar species in its supraorbital and mandibular pores (one + four and six or seven), arrangements of teeth on its mandible and vomer (almost uniserial), its robust body (depth 2.6–3.1% TL), slightly larger head (7.8–8.1% TL), longer and acute snout (24% HL), longer upper jaw (45–48% HL), absence of protrusion along upper lip, and the narrow dark margin of its dorsal fin.Ophichthus oligosteus, collected from Tosa Bay of Kochi Prefecture, is characterized by its fewer preanal and total vertebrae (46 and 121).Ophichthus yamakawai, collected from Kochi Prefecture, is characterized by its large blotches along the lateral line and numerous preanal and total vertebrae (67 and 172). We refer an uncertain species,Ophichthus stenopterusCope 1871, to the synonymy ofOphichthus pallens(Richardson 1848), a forgotten species described from China.Pisoodonophis zophistiusJordan and Snyder 1901 is recognized as valid inOphichthusand a senior synonym ofOphichthys intermediusRegan 1905.Ophichthus habereriFranz 1910, originally described from Yokohama, central Japan, is a junior synonym ofOphichthus asakusaeJordan and Snyder 1901.Pisodonophis sangjuensisJi and Kim 2011 is referred toOphichthus.We currently recognize 20 species ofOphichthusfrom Japan. A key to the Japanese species ofOphichthusand its closely associated groupPisodonophisis provided.