Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum)

Autor(es):Mostrar menos -

Santos de Souza, Fernando Henrique ^[1] ; Perez, Manolo Fernandez ^[1] ; Carlos Bertollo, Luiz Antonio ^[1] ; de Oliveira, Ezequiel Aguiar ^{[1, 2]} ; Lavoue, Sebastien ^[3] ; Gestich, Carla Cristina ^[1] ; Rab, Petr ^[4] ; Ezaz, Tariq ^[5] ; Liehr, Thomas ^[6] ; Viana, Patrik Ferreira ^[7] ; Feldberg, Eliana ^[7] ; Cioffi, Marcelo de Bello ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos UFSCar, Dept Genet & Evolucao, Rodovia Washington Luiz Km 235, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Secretaria Estado Educ Mato Grosso SEDUC MT, BR-78049909 Cuiaba, MT - Brazil

^[3] Univ Sains Malaysia, Sch Biol Sci, George Town 11800 - Malaysia

^[4] Czech Acad Sci, Inst Anim Physiol & Genet, Lab Fish Genet, Rumburska 89, Libechov 27721 - Czech Republic

^[5] Univ Canberra, Inst Appl Ecol, Canberra, ACT 2617 - Australia

^[6] Univ Hosp Jena, Inst Human Genet, D-07740 Jena - Germany

^[7] Inst Nacl de Pesquisas da Amazonia, Coordenacao Biodiversidade, Lab Genet Anim, Av Andre Araujo 2936, BR-69067375 Petropolis - Brazil

• Tipo de documento: Artigo Científico
• Fonte: GENES; v. 10, n. 9 SEP 2019.
• Citações Web of Science: 0

Resumo

The South American arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum) are emblematic species widely distributed in the Amazon and surrounding basins. Arowana species are under strong anthropogenic pressure as they are extensively exploited for ornamental and food purposes. Until now, limited genetic and cytogenetic information has been available, with only a few studies reporting to their genetic diversity and population structure. In the present study, cytogenetic and DArTseq-derived single nucleotide polymorphism (SNP) data were used to investigate the genetic diversity of the two Osteoglossum species, the silver arowana O. bicirrhosum, and the black arowana O. ferreirai. Both species differ in their 2n (with 2n = 54 and 56 for O. ferreirai and O. bicirrhosum, respectively) and in the composition and distribution of their repetitive DNA content, consistent with their taxonomic status as different species. Our genetic dataset was coupled with contemporary and paleogeographic niche modeling, to develop concurrent demographic models that were tested against each other with a deep learning approach in O. bicirrhosum. Our genetic results reveal that O. bicirrhosum colonized the Tocantins-Araguaia basin from the Amazon basin about one million years ago. In addition, we highlighted a higher genetic diversity of O. bicirrhosum in the Amazon populations in comparison to those from the Tocantins-Araguaia basin. (AU)

• Processo FAPESP: 18/22033-1 - Uma abordagem intercontinental para a investigação da evolução cromossômica, diversidade genética e biogeografia na ordem Osteoglossiformes (Teleostei: Osteoglossomorpha). Parte III.
• Beneficiário: Marcelo de Bello Cioffi
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/10240-0 - Diversidade genética, biogeografia e evolução de peixes da ordem Osteoglossiformes (Teleostei, Osteoglossomorpha)
• Beneficiário: Manolo Fernandez Perez
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado