Multi-locus phylogeny of the catfish genus Ictalurus Rafinesque, 1820 (Actinopterygii, Siluriformes) and its systematic and evolutionary implications

BMC Ecology and Evolution

Research

Ignacio Doadrio¹  Carlos Pedraza-Lara²  Gerardo Pérez-Ponce de León³  Rodolfo Pérez-Rodríguez⁴  Omar Domínguez-Domínguez⁴  Ana Berenice García-Andrade⁵  Rogelio Rosas-Valdez⁶ 

[1] Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, c/José Gutiérrez Abascal 2, E-28006, Madrid, España;Forensic Science, Medicine School, National Autonomous University of Mexico, Circuito de la investigación científica s/n, Ciudad Universitaria, 04510, Coyoacan, CdMx, Mexico;Instituto de Biología, UNAM, Circuito exterior s/n, Ciudad Universitaria, C.P. 04510, Coyoacán, D.F, México;Escuela Nacional de Estudios Superiores Unidad Mérida, Universidad Nacional Autónoma de México, Km 4.5 Carretera Mérida-Tetiz, Ucú, Yucatán, México;Laboratorio de Biología Acuática, Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58000, Morelia, Michoacán, México;Laboratorio de Biología Acuática, Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58000, Morelia, Michoacán, México;Laboratorio de Macroecología Evolutiva, Red de Biología Evolutiva, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, 91070, Xalapa, Veracruz, México;Laboratorio de Colecciones Biológicas y Sistemática Molecular, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Av. Preparatoria S/N, Campus Universitario II, Col. Agronómica, C. P. 98066, Zacatecas, México;

关键词: Evolution;    Freshwater fishes;    Ictaluridae;    North America;    Taxonomic classification;   

DOI  :  10.1186/s12862-023-02134-w

 received in 2022-04-29, accepted in 2023-06-12,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundIctalurus is one of the most representative groups of North American freshwater fishes. Although this group has a well-studied fossil record and has been the subject of several morphological and molecular phylogenetic studies, incomplete taxonomic sampling and insufficient taxonomic studies have produced a rather complex classification, along with intricate patterns of evolutionary history in the genus that are considered unresolved and remain under debate.ResultsBased on four loci and the most comprehensive taxonomic sampling analyzed to date, including currently recognized species, previously synonymized species, undescribed taxa, and poorly studied populations, this study produced a resolved phylogenetic framework that provided plausible species delimitation and an evolutionary time framework for the genus Ictalurus.ConclusionsOur phylogenetic hypothesis revealed that Ictalurus comprises at least 13 evolutionary units, partially corroborating the current classification and identifying populations that emerge as putative undescribed taxa. The divergence times of the species indicate that the diversification of Ictalurus dates to the early Oligocene, confirming its status as one of the oldest genera within the family Ictaluridae.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

Fig. 1

41116_2023_37_Article_IEq174.gif

41116_2023_37_Article_IEq168.gif

41116_2023_37_Article_IEq160.gif

41116_2023_37_Article_IEq152.gif