Molecular species delimitation of the genera Anodus, Argonectes, Bivibranchia and Micromischodus (Ostariophysi: Characiformes)

Author(s)

Nogueira, Acacio Freitas ^{[1, 2, 3, 4]} ; Oliveira, Claudio ^[3] ; Langeani, Francisco ^[5] ; Netto-Ferreira, Andre Luiz ^[4]

Affiliation

^[1] Univ Fed Para, Inst Ciencias Biol, Programa Posgrad Zool, Rua Auguslo Correa 01, BR-66075110 Belem, Para - Brazil

^[2] Museu Paraense Emilio Goeldi, Rua Auguslo Correa 01, BR-66075110 Belem, Para - Brazil

^[3] Univ Estadual Paulista, Inst Biociencias, Dept Biol Estrutural & Func, Lab Biol & Genet Peixes, Rua Prof Dr Antonio CW Zanin 250, BR-18618689 Botucatu, SP - Brazil

^[4] Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Zool, Lab Ictiol, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS - Brazil

^[5] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Ciencias Biol, Rua Cristevao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

• Document type: Journal article
• Source: Neotropical Ichthyology; v. 19, n. 4 2021.
• Web of Science Citations: 0

Abstract

ABSTRACT A good taxonomic assessment of specimens is an essential task to many biological studies and DNA data have provided additional sources of information to assist in the disentanglement of taxonomic problems among living organisms, as has been the case of some taxa of the megadiverse Neotropical ichthyofauna. Here we assessed all valid species in the Neotropical freshwater fish genera Anodus, Argonectes, Bivibranchia and Micromischodus of the family Hemiodontidae to establish molecular species boundaries among them. All species delimitation methods defined exactly only one MOTU for Anodus elongatus, Argonectes longiceps, A. robertsi, Bivibranchia bimaculata, B. notata, B. velox, and Micromischodus sugillatus, resulting in total congruence between nominal species and MOTUs for these seven taxa. The three species having discordant results across analyses: Anodus orinocensis, Bivibranchia fowleri, and Bivibranchia simulata, matched more than one MOTU per species in some methods, meaning that cryptic diversity may exist within these taxa. Overall, this great correspondence among morphological and molecular boundaries for thae species analysed seem to be indicative of a reasonably stable taxonomy within these Hemiodontidae genera. (AU)

• 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
• FAPESP's process: 16/09204-6 - Biodiversity and Biogeography in marine-estuarine fishes (Teleostei) from Brazil
• Grantee: Claudio de Oliveira
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/20610-1 - Study of the biogeography of the Brazilian coast using data population genetic data of marine catfish of the genera Cathorops and Genidens
• Grantee: Claudio de Oliveira
• Support Opportunities: Regular Research Grants