Intergeneric phylogenetic relationships in catfishes of the Loricariinae (Siluriformes: Loricariidae), with the description of Fonchiiloricaria nanodon: a new genus and species from Peru

Autor(es)

Rodriguez, M. S. ^[1] ; Ortega, H. ^[2] ; Covain, R. ^{[3, 4, 5]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, LIRP, Dept Biol FFCLRP, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Nacl Mayor San Marcos, Dept Ictiol, Museum Hist Nat, Lima 11 - Peru

^[3] Museum Hist Nat, Dept Herpetol & Ichthyol, CH-1211 Geneva 6 - Switzerland

^[4] Univ Geneva, Dept Zool & Biol Anim, CH-1211 Geneva 4 - Switzerland

^[5] Univ Lyon 1, CNRS, Lab Biometrie & Biol Evolut, UMR 5558, F-69622 Villeurbanne - France

• Tipo de documento: Artigo Científico
• Fonte: Journal of Fish Biology; v. 79, n. 4, p. 875-895, OCT 2011.
• Citações Web of Science: 12

Resumo

Recent investigations in the upper Rio Huallaga in Peru revealed the presence of an intriguing species of the Loricariinae. To characterize and place this species within the evolutionary tree of the subfamily, a molecular phylogeny of this group was inferred based on the 12S and 16S mitochondrial genes and the nuclear gene F-reticulon4. The phylogeny indicated that this distinctive species was a member of the subtribe Loricariina. Given its phylogenetic placement, and its unusual morphology, this species is described as a new genus and new species of Loricariinae: Fonchiiloricaria nanodon. This new taxon is diagnosed by usually possessing one to three premaxillary teeth that are greatly reduced; lips with globular papillae on the surface; the distal margin of lower lip bearing short, triangular filaments; the premaxilla greatly reduced; the abdomen completely covered by plates, with the plates between lateral abdominal plates small and rhombic; a caudal fin with 14 rays; the orbital notch absent; five lateral series of plates; dorsal-fin spinelet absent; preanal plate present, large and solid, and of irregular, polygonal shape, the caudal peduncle becoming more compressed posteriorly for the last seven to 10 plates. (C) 2011 The Authors Journal of Fish Biology (C) 2011 The Fisheries Society of the British Isles (AU)

• Processo FAPESP: 07/04701-2 - Relações filogenéticas e biogeografia dos peixes da subfamília Loricariinae a partir da análise de dados morfológicos (Siluriformes: Loricariidae)
• Beneficiário: Mónica Sonia Rodriguez
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado