秘鲁西部亚马逊河的一种新的小鳀属（鲱形目：鳀科）鱼类，并对秘鲁亚马逊河的同属鱼类进行评论。

A new species of Anchoviella (Clupeiformes: Engraulidae) from the western Amazon River in Peru, with comments on congeners in the Peruvian Amazon River.

作者信息

Loeb M V, Varella H R, Menezes N A

机构信息

Museu de Zoologia da Universidade de São Paulo, Seção de Peixes, Caixa Postal, 42494, São Paulo, SP, Brazil.

Departamento de Zoologia, Instituto de Biologia, Universidade Federal da Bahia, Campus de Ondina, Rua Barão de Geremoabo s/n, 40170-115, Salvador, BA, Brazil.

出版信息

J Fish Biol. 2018 Jun;92(6):1720-1730. doi: 10.1111/jfb.13601. Epub 2018 Apr 6.

DOI:10.1111/jfb.13601

PMID:29624680

Abstract

Anchoviella hernanni sp. nov. is described from the upper Amazon River basin, in tributaries of the Marañon, Ucayali and Madre de Dios river drainages that drain the Peruvian Andes. The new taxon can be distinguished from all congeners except Anchoviella jamesi, Anchoviella manamensis and Anchoviella perezi, by having 12-15 gill rakers in the lower branch of the first gill arch (v·16-35) and from those species by the distance between verticals through the posterior margin of the orbit to the posterior margin of the upper jaw 9·5-14·8% head length; L (v. up to 6·0% L ). An updated identification key of all freshwater species of Anchoviella and morphological comparisons between all species of the genus occurring in Peru are provided.

摘要

赫氏小鳀新种（Anchoviella hernanni sp. nov.）采自亚马孙河上游流域，即马拉尼翁河、乌卡亚利河和马德雷德迪奥斯河排水区的支流，这些支流流经秘鲁安第斯山脉。这个新分类单元与所有同属物种不同，除了詹姆斯小鳀（Anchoviella jamesi）、马纳门西斯小鳀（Anchoviella manamensis）和佩雷兹小鳀（Anchoviella perezi），其第一鳃弓下支有12 - 15个鳃耙（vs·16 - 35），与这些物种的区别在于从眼眶后缘到上颌后缘的垂线之间的距离为头长的9.5 - 14.8%；体长（vs·高达体长的6.0%）。提供了所有淡水小鳀物种的最新鉴定检索表，以及秘鲁境内该属所有物种之间的形态学比较。