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

Fernando Henrique Santos de Souza, Manolo Fernandez Perez, Luiz Antônio Carlos Bertollo, Ezequiel Aguiar de Oliveira, Sebastien Lavoué, Carla Cristina Gestich, Petr Ráb, Tariq Ezaz, Thomas Liehr, Patrik Ferreira Viana, Eliana Feldberg, Marcelo de Bello Cioffi

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)1-18
Number of pages18
JournalGenes
Volume10
Issue number9
DOIs
Publication statusPublished - 9 Sep 2019

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Demography
Cytogenetics
Silver
Population
Single Nucleotide Polymorphism
Learning
Pressure
Food
DNA
Datasets

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Souza, F. H. S. D., Perez, M. F., Bertollo, L. A. C., Oliveira, E. A. D., Lavoué, S., Gestich, C. C., ... Cioffi, M. D. B. (2019). Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum). Genes, 10(9), 1-18. https://doi.org/10.3390/genes10090693
Souza, Fernando Henrique Santos de ; Perez, Manolo Fernandez ; Bertollo, Luiz Antônio Carlos ; Oliveira, Ezequiel Aguiar de ; Lavoué, Sebastien ; Gestich, Carla Cristina ; Ráb, Petr ; Ezaz, Tariq ; Liehr, Thomas ; Viana, Patrik Ferreira ; Feldberg, Eliana ; Cioffi, Marcelo de Bello. / Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum). In: Genes. 2019 ; Vol. 10, No. 9. pp. 1-18.
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abstract = "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.",
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Souza, FHSD, Perez, MF, Bertollo, LAC, Oliveira, EAD, Lavoué, S, Gestich, CC, Ráb, P, Ezaz, T, Liehr, T, Viana, PF, Feldberg, E & Cioffi, MDB 2019, 'Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum)', Genes, vol. 10, no. 9, pp. 1-18. https://doi.org/10.3390/genes10090693

Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum). / Souza, Fernando Henrique Santos de; Perez, Manolo Fernandez; Bertollo, Luiz Antônio Carlos; Oliveira, Ezequiel Aguiar de; Lavoué, Sebastien; Gestich, Carla Cristina; Ráb, Petr; Ezaz, Tariq; Liehr, Thomas; Viana, Patrik Ferreira; Feldberg, Eliana; Cioffi, Marcelo de Bello.

In: Genes, Vol. 10, No. 9, 09.09.2019, p. 1-18.

Research output: Contribution to journalArticle

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T1 - Interspecific Genetic Differences and Historical Demography in South American Arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum)

AU - Souza, Fernando Henrique Santos de

AU - Perez, Manolo Fernandez

AU - Bertollo, Luiz Antônio Carlos

AU - Oliveira, Ezequiel Aguiar de

AU - Lavoué, Sebastien

AU - Gestich, Carla Cristina

AU - Ráb, Petr

AU - Ezaz, Tariq

AU - Liehr, Thomas

AU - Viana, Patrik Ferreira

AU - Feldberg, Eliana

AU - Cioffi, Marcelo de Bello

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Y1 - 2019/9/9

N2 - 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.

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KW - colonization pathway

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