| Journal: | Genetics and molecular biology |
| Database: | PERIÓDICA |
| System number: | 000459187 |
| ISSN: | 1415-4757 |
| Authors: | Rodrigues Oliveira, Igor Henrique1 Penteado, Pierre Rafael1 Pasa, Rubens1 Menegídio, Fabiano Bezerra2 Kavalco, Karine Frehner1 |
| Institutions: | 1Universidade Federal de Vicosa, Laboratorio de Genetica Ecologica e Evolutiva, Rio Paranaiba, Minas Gerais. Brasil 2Universidade de Mogi das Cruzes, Centro de Pesquisas Tecnologicas, Mogi das Cruzes, Sao Paulo. Brasil |
| Year: | 2023 |
| Volumen: | 46 |
| Number: | 3 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Deuterodon is a genus of the subfamily Stethaprioninae, a group of Neotropical fish known as tetras. Deuterodon hastatus represents a species complex, which is supported by cytogenetic and molecular data. In this study, we show the results of comparative evolutionary analyses of the ATP synthase subunit 6 gene in four Deuterodon species, in addition to ribosomal markers (18S rDNA and 5S rDNA), of a new population of the D. hastatus species complex from the Angra dos Reis/RJ region. The study population comprised a new cytotype, which we refer to as cytotype D, in D. hastatus, with 2n = 50 = 6M+8SM+8ST+28A. We obtained three different clades of D. hastatus in our phylogeny, one of them composed only by specimens of cytotype D. By using molecular clock dating, we observed that the radiation of Deuterodon from southeastern Brazil seemed to be associated with neotectonic events that occurred during the Miocene-Pliocene and Pliocene-Pleistocene transitions, marked by the capture of headwater streams and marine transgressions. The results obtained reinforce the idea that D. hastatus is a species complex, and at least three evolutionary significant units were identified in this group |
| Disciplines: | Biología |
| Keyword: | Genética, Evolución y filogenia, Peces, Polimorfismo, Reloj molecular, Deuterodon, Characiformes |
| Keyword: | Genetics, Evolution and phylogeny, Fish, Polymorphism, Deuterodon, Characiformes, Molecular clock, Phylogeny |
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