一种新的 Characidium Reinhardt 物种（Characiformes：Crenuchidae）来自秘鲁亚马逊中部的 Huallaga 河，对该属的次要性特征进行了综述。

A new species of Characidium Reinhardt (Characiformes: Crenuchidae) from the Río Huallaga, central Peruvian Amazon, with a review of secondary sexual characters in the genus.

机构信息

Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.

Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil.

出版信息

J Fish Biol. 2021 Jan;98(1):178-188. doi: 10.1111/jfb.14568. Epub 2020 Oct 28.

DOI:10.1111/jfb.14568

PMID:32997345

Abstract

Characidium pumarinri n. sp. is described from the affluents of Río Huallaga, a tributary of Río Marañón that drains the eastern slopes of the Andes, in the Peruvian Amazon. The new species has a deep body (24-31% in L ), 11-17 well-marked dark bars and remarkable sexual dimorphism related to colour pattern, in which males have darker anal, dorsal, pectoral and pelvic fins than females. C. pumarinri resembles some species allocated in Clade C4, mainly by having a high number of transversal bars and a deep body. In addition, a thorough review and further descriptions of the secondary sexual characteristics in Characidium are provided.

摘要

特氏副丽鱼是一种新发现的鱼类，产自秘鲁亚马逊地区马拉尼翁河的支流瓦拉加河的支流。这种新鱼类的身体很深（体长的 24-31%），有 11-17 条明显的深色条纹，并且具有显著的性别二态性，表现在颜色模式上，雄鱼的臀鳍、背鳍、胸鳍和腹鳍比雌鱼的更深。特氏副丽鱼与分配在 C4 进化枝的一些物种相似，主要是因为它们具有大量的横向条纹和深体。此外，本文还对副丽鱼属的第二性征进行了全面的回顾和进一步的描述。