Evolutionary units delimitation and continental multilocus phylogeny of the hyperdiverse catfish genus Hypostomus

Autor(es):Mostrar menos -

de Queiroz, Luiz Jardim ^[1] ; Cardoso, Yamila ^[2] ; Jacot-des-Combes, Cecile ^[1] ; Bahechar, Ilham Anne ^[1] ; Lucena, Carlos Alberto ^[3] ; Py-Daniel, Lucia Rapp ^[4] ; Sarmento Soares, Luisa Maria ^[5] ; Nylinder, Stephan ^[6] ; Oliveira, Claudio ^[7] ; Parente, Thiago Estevam ^[8] ; Torrente-Vilara, Gislene ^[9] ; Covain, Raphael ^[10] ; Buckup, Paulo ^[11] ; Montoya-Burgos, I, Juan

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^[1] I, Univ Geneva, Dept Genet & Evolut, Quai Ernest Ansermet 30, CH-1211 Geneva - Switzerland

^[2] Univ Nacl La Plata, Lab Sistemat & Biol Evolut, Consejo Nacl Invest Cient & Tecn, Fac Ciencias Nat & Museo, Paseo Bosque S-N, B1900FWA, La Plata, Buenos Aires - Argentina

^[3] Pontificia Univ Catolica Rio Grande do Sul, Museu Ciencias & Tecnol, Av Ipiranga 6681, BR-90619900 Porto Alegre, RS - Brazil

^[4] Inst Nacl de Pesquisas da Amazonia, Programa Colecoes Cient & Biol, Coordenacao Biodiversidade, Av Andre Araujo 2936, BR-69060001 Manaus, Amazonas - Brazil

^[5] Inst Nacl Mata Atlantica, Museu Biol Prof Mello Leitao, Av Jose Ruschi 4, BR-29650000 Santa Teresa, ES - Brazil

^[6] Univ Gothenburg, Dept Psychol, Haraldsgatan 1, S-41314 Gothenburg - Sweden

^[7] Univ Estadual Sao Paulo, Inst Biociencias, Dept Morfol, Rua Prof Doutor Antonio Celso Wagner Zanin 250, BR-18618689 Botucatu, SP - Brazil

^[8] Fundacao Oswaldo Cruz, Lab Genet Mol Microrganismos, Lab Toxicol Ambiental, Av Brasil 4365, BR-21040900 Rio De Janeiro, RJ - Brazil

^[9] Univ Fed Sao Paulo, Dept Ciencias Mar, Av Doutor Carvalho de Mendonca 144, BR-11070100 Santos, SP - Brazil

^[10] Museum Nat Hist Geneva, Dept Herpertol & Ichthyol, Route Malagnou 1, CH-1211 Geneva - Switzerland

^[11] Univ Fed Rio de Janeiro, Dept Vertebrados, Vista Museu Nacl Rio de Janeiro, Quinta Boa, BR-20940040 Rio De Janeiro, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Molecular Phylogenetics and Evolution; v. 145, APR 2020.
• Citações Web of Science: 1

Resumo

With 149 currently recognized species, Hypostomus is one of the most species-rich catfish genera in the world, widely distributed over most of the Neotropical region. To clarify the evolutionary history of this genus, we reconstructed a comprehensive phylogeny of Hypostomus based on four nuclear and two mitochondrial markers. A total of 206 specimens collected from the main Neotropical rivers were included in the present study. Combining morphology and a Bayesian multispecies coalescent (MSC) approach, we recovered 85 previously recognized species plus 23 putative new species, organized into 118 `clusters'. We presented the Cluster Credibility (CC) index that provides numerical support for every hypothesis of cluster delimitation, facilitating delimitation decisions. We then examined the correspondence between the morphologically identified species and their inter-specific COI barcode pairwise divergence. The mean COI barcode divergence between morphological sisters species was 1.3 +/- 1.2%, and only in 11% of the comparisons the divergence was >= 2%. This indicates that the COI barcode threshold of 2% classically used to delimit fish species would seriously underestimate the number of species in Hypostomus, advocating for a taxon-specific COI-based inter-specific divergence threshold to be used only when approximations of species richness are needed. The phylogeny of the 108 Hypostomus species, together with 35 additional outgroup species, confirms the monophyly of the genus. Four well-supported main lineages were retrieved, hereinafter called super-groups: Hypostomus cochliodon, H. hemiurus, H. auroguttatus, and H. plecostomus super-groups. We present a compilation of diagnostic characters for each super-group. Our phylogeny lays the foundation for future studies on biogeography and on macroevolution to better understand the successful radiation of this Neotropical fish genus. (AU)

• Processo FAPESP: 16/09204-6 - Biodiversidade e Biogeografia em peixes marinho-estuarinos (Teleostei) do Brasil
• Beneficiário: Claudio de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/26508-3 - Filogenia da hiperdiversa ordem Characiformes (Teleostei: Ostariophysi) utilizando elementos ultraconservados
• Beneficiário: Claudio de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático