A new species of Aphyocharax Günther, 1868 (Characiformes, Characidae) from the Maracaçumé river basin, eastern Amazon

A new species of Aphyocharax is described from the Maracaçumé river basin, eastern Amazon, based on morphological and molecular data. The new species differs from all its congeners, mainly by possessing the upper caudal-fin lobe longer than the lower one in mature males, and other characters related...

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Bibliographic Details
Published inZoosystematics and Evolution Vol. 95; no. 2; pp. 507 - 516
Main Authors de Brito, Pâmella Silva, Guimarães, Erick Cristofore, Carvalho-Costa, Luis Fernando, Ottoni, Felipe Polivanov
Format Journal Article
LanguageEnglish
Published Sophia Pensoft Publishers 23.10.2019
Subjects
Amazonia
Animal behavior
Aphyocharax
color
Congeners
Cytochrome b
fins
Haplotypes
Mitochondria
mitochondrial genes
museums
New species
Phylogeny
probability
River basins
Rivers
watersheds
Amazonia
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ISSN1435-1935
1860-0743
1860-0743
DOI10.3897/zse.95.36788

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Summary:A new species of Aphyocharax is described from the Maracaçumé river basin, eastern Amazon, based on morphological and molecular data. The new species differs from all its congeners, mainly by possessing the upper caudal-fin lobe longer than the lower one in mature males, and other characters related to teeth counts, colour pattern, and body depth at dorsal-fin origin. In addition, the new species is corroborated by a haplotype phylogenetic analyses based on the Cytochrome B (Cytb) mitochondrial gene, where its haplotypes are grouped into an exclusive lineage, supported by maximum posterior probability value, a species delimitation method termed the Wiens and Penkrot analysis (WP).
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ISSN:1435-1935
1860-0743
1860-0743
DOI:10.3897/zse.95.36788