Séret Bernard, Naylor Gavin J P
IchtyoConsult, 6 bis rue du Centre, 91430 Igny, FRANCE.; Email:
Hollings Marine Laboratory, 331 Fort Johnson Road, Charleston, SC 29412, USA.; Email:
Zootaxa. 2016 Jul 15;4138(2):291-308. doi: 10.11646/zootaxa.4138.2.4.
A new wedgefish, Rhynchorhina mauritaniensis gen. et sp. nov., is described from three specimens collected in the shallow waters of the shoal "Banc d'Arguin", off Mauritania (Eastern Central Atlantic). The new genus is mainly distinguished from its close relatives, members of the genus Rhynchobatus, by its snout shape, more broadly rounded like that of the shark-ray Rhina ancylostoma, instead of being typically wedge-shaped as in Rhynchobatus species. The new species resembles the common West African wedgefish, Rhynchobatus lubberti, in having a similar colour pattern, but differs in snout shape. The new genus is supported as genetically distinct by comparative analysis of the mitochondrial NADH2 gene.
一种新的琵琶鲼，即毛里塔尼亚琵琶鲼（Rhynchorhina mauritaniensis gen. et sp. nov.），是根据在毛里塔尼亚（中东部大西洋）附近“阿尔金浅滩”浅水区采集的三个标本描述的。这个新属主要与其近亲——琵琶鲼属（Rhynchobatus）的成员不同，其吻部形状更宽圆，类似于鲨鱼鳐（Rhina ancylostoma），而不像琵琶鲼属物种那样典型的楔形。新物种在颜色模式上与常见的西非琵琶鲼（Rhynchobatus lubberti）相似，但吻部形状不同。通过对线粒体NADH2基因的比较分析，支持这个新属在基因上是独特的。
