Taxonomic revision and molecular phylogeny of Gymnocorymbus Eigenmann, 1908 (Teleostei, Characiformes, Characidae)

Autor(es)

Benine, Ricardo C. ^[1] ; Melo, Bruno F. ^[2] ; Castro, Ricardo M. C. ^[3] ; Oliveira, Claudio ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Biociencias, Dept Zool, Lab Ictiol, BR-18618970 Botucatu, SP - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias, Dept Morfol, Lab Biol Genet Peixes, BR-18618970 Botucatu, SP - Brazil

^[3] Univ Sao Paulo, Fac Filosofia Ciencias & Letras, Dept Biol, LIRP, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 3956, n. 1, p. 1-28, MAY 7 2015.
• Citações Web of Science: 7

Resumo

Characidae, one of the most diverse families of Characiformes and one of the largest clades of fishes in the world, has a complex taxonomic background, with one issue being the placement of various genera, including Gymnocorymbus. Herein, we generate the first molecular phylogeny for the genus using three nuclear and two mitochondrial loci and review the systematics of Gymnocorymbus. This genus includes the black tetra, a well-known and popular species among aquarists. Molecular phylogeny strongly supports the monophyly of Gymnocorymbus, with this hypothesis corroborated by the presence of three morphological synapomorphies. Of the six previously known nominal species of Gymnocorymbus, three are considered valid herein: Gymnocorymbus bondi from the Rio Orinoco basin, Gymnocorymbus ternetzi from the Rio Paraguay basin, and Gymnocorymbus thayeri from the Corantijn and Amazon basin and rivers of northeastern Brazil. A fourth species, Gymnocorymbus flaviolimai sp. n., is described from the Rio Madeira, Amazon basin. Lectotypes are designated for G. ternetzi and G. thayeri. Our results support previous hypotheses of the alignment of Gymnocorymbus close to the subfamily Stethaprioninae and also support the sister relationship between G. ternetzi and G. thayeri, and of that clade as sister to G. bondi. (AU)

• Processo FAPESP: 04/09219-6 - Relações filogenéticas em Characidae (Ostariophysi: Characiformes)
• Beneficiário: Ricardo Macedo Corrêa e Castro
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 11/08374-1 - Relações filogenéticas na superfamília Anostomoidea (Ostariophysi: Characiformes)
• Beneficiário: Bruno Francelino de Melo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/50282-7 - Inventário da fauna de Characiformes (Teleostei, Ostariophysi) da América do Sul
• Beneficiário: Naercio Aquino Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático