Phylogenomics of the catfish family Pimelodidae with focus on the genus Pimelodus support the recognition of Sorubiminae and Pimelodinae (Teleostei, Siluriformes)

Author(s)

Silva, Gabriel S. C. ; Rocha, Marcelo S. ; Melo, Bruno F. ; Reia, Lais ; Roxo, Fabio F. ; Sabaj, Mark H. ; Oliveira, Claudio

• Document type: Journal article
• Source: ZOOLOGICA SCRIPTA; v. 53, n. 5, p. 14-pg., 2024-06-08.

Abstract

Pimelodidae is a family of large-sized catfishes consisting of 116 valid species divided into 30 genera distributed in the Neotropical region. Despite recent advancements in understanding the pimelodid phylogeny, several internal relationships have remained unclear and have received limited support from various phylogenetic analyses. We provide a new genomic dataset comprising 55 species representing 25 genera of Pimelodidae and related siluriform families Aspredinidae, Auchenipteridae, Cetopsidae, Doradidae, Diplomystidae, Heptapteridae, Loricariidae, and Pseudopimelodidae. Our phylogenetic analyses support the monophyly of Pimelodidae, as well as the existence of four major lineages: the Steindachneridion clade, the Leiarius + Phractocephalus clade, and two major subclades herein classified as Sorubiminae and Pimelodinae. Our topology resolves Phractocephalus sister to Leiarius differing from previous phylogenies. In Sorubiminae, Zungaro is sister to two large clades: one with Sorubim, Sorubimichthys, and Pseudoplatystoma, and the other with Hemisorubim, Platysilurus, Platystomatichthys, Brachyplatystoma, and Hypophthalmus. In Pimelodinae, we found the Pimelodus ornatus clade, the calophysines, and the clade with Exallodontus, Propimelodus, and Pimelodus altissimus closer to the Pimelodus group. Parapimelodus, Duopalatinus, Iheringichthys, and Bergiaria are included within the Pimelodus group. The Pimelodus group contains four main components: (1) Duopalatinus peruanus, (2) the trans-Andean Pimelodus grosskopfii; (3) Pimelodus maculatus clade with species from the Brazilian Shield in southeastern Brazil; and (4) Pimelodus blochii clade composed by species from the Amazon, Orinoco, Paran & aacute;-Paraguay, Parna & iacute;ba, S & atilde;o Francisco and coastal drainages of the Guiana Shield. The P. maculatus clade is composed by phenotypically diverse species, and the P. blochii clade houses species morphologically similar that appear nested within the widely distributed P. blochii. (AU)

• FAPESP's process: 21/12979-8 - Phylogenetic relationships among genera and families of Siluriformes using ultraconserved elements
• Grantee: Gabriel de Souza da Costa e Silva
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 20/13433-6 - Phylogeny and molecular identification of fishes of the superorder Ostariophysi (Chordata: Actinopterygii) using genomic approaches
• Grantee: Claudio de Oliveira
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 16/11313-8 - Phylogeny of the Order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
• Grantee: Bruno Francelino de Melo
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 23/09902-9 - Phylogenetic relation of Stevardiinae with emphasis in Diapomini tribe (Characiformes: Characidae) utilizing the ultra-conserved elements of the genome
• Grantee: Lais Reia
• Support Opportunities: Scholarships in Brazil - Support Program for Fixating Young Doctors
• FAPESP's process: 22/13025-0 - Molecular phylogeny of Siluroidei using the ultraconserved elements
• Grantee: Gabriel de Souza da Costa e Silva
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 14/26508-3 - Phylogeny of the hyperdiverse order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
• Grantee: Claudio de Oliveira
• Support Opportunities: Research Projects - Thematic Grants