A new species of inseminating seasonal killifish of the Cynopoecilus melanotaenia complex from southern Brazil (Cyprinodontiformes: Rivulidae)

A new species of inseminating seasonal killifish of the Cynopoecilus melanotaenia complex from southern Brazil (Cyprinodontiformes: Rivulidae)

The Cynopoecilus melanotaenia complex is a morphologically homogeneous killifish group, endemic from an area encompassing southern Brazil and northeastern Uruguay. It presently comprises four valid species: C. melanotaenia, the type species of the genus, and C. fulgens, C. intimus, and C. nigrovitta...

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Bibliographic Details
Published in:Biodiversity data journal Vol. 4; no. 4; pp. e6888 - 17
Main Authors: Costa, Wison Jem, Amorim, Pedro F, Mattos, José Leonardo Oliveira
Format: Journal Article
Language:English
Published: Bulgaria Pensoft Publishers 04-04-2016
Subjects:
Actinopterygii
Americas
Animalia
Chordata
Congeners
Cynopoecilus fulgens
Cynopoecilus intimus
Cynopoecilus melanotaenia
Cynopoecilus nigrovittatus
Cyprinodontiformes
Cytochrome-c oxidase
Mitochondria
Molecular Systematics
New species
Osteichthyes
Phylogeny
Pisces
River basins
Rivers
Rivulidae
South America
Systematics
Taxonomic Paper
Taxonomy
Vertebrata
Brazil
Aplocheiloid killifishes
Systematics
Molecular phylogeny
Internal fertilization
Neotropical region
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Description
Summary:The Cynopoecilus melanotaenia complex is a morphologically homogeneous killifish group, endemic from an area encompassing southern Brazil and northeastern Uruguay. It presently comprises four valid species: C. melanotaenia, the type species of the genus, and C. fulgens, C. intimus, and C. nigrovittatus. Cynopoecilus feltrini, n. sp., from the lower Tubarão river basin, southern Brazil, is distinguished from all congeners of the C. melanotaenia complex by having frontal E-scales medially overlapped, branchiostegal region orangish red in males and dorsum with few dark brown spots above opercular region. A phylogenetic tree derived from the analysis of a fragment of the mitochondrial gene cytochrome c oxidase subunit I (681 bp) indicates that C. feltrini is a member of the clade that includes all species of the C. melanotaenia complex except C. melanotaenia, as well as that C. feltrini is the sister group of a clade comprising C. fulgens and C. nigrovittatus.
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Academic editor: Pavel Stoev
ISSN:1314-2828
1314-2836
1314-2828
DOI:10.3897/BDJ.4.e6888