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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Historical demography and climate driven distributional changes in a widespread Neotropical freshwater species with high economic importance

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Oliveira, E. A. [1, 2] ; Perez, M. F. [1] ; Bertollo, L. A. C. [1] ; Gestich, C. C. [1] ; Rab, P. [3] ; Ezaz, T. [4] ; Souza, F. H. S. [1] ; Viana, P. [5] ; Feldberg, E. [5] ; Oliveira, E. H. C. [6] ; Cioffi, M. B. [1]
Total Authors: 11
[1] Univ Fed Sao Carlos UFSCar, Dept Genet & Evolucao, Sao Carlos, SP - Brazil
[2] SEDUC MT, Secretaria Estado Educ Mato Grosso, Cuiaba, MT - Brazil
[3] Czech Acad Sci, Inst Anim Physiol & Genet, Lab Fish Genet, Libechov - Czech Republic
[4] Univ Canberra, Inst Appl Ecol, Canberra, ACT - Australia
[5] Inst Nacl Pesquisas Arnazonia, Coordenacao Biodiversidade, Lab Genet Anim, Petropolis, RJ - Brazil
[6] Inst Evandro Chagas, SAMAM, Lab Cultura Tecidos & Citogenet, Ananindeua, PA - Brazil
Total Affiliations: 6
Document type: Journal article
Source: ECOGRAPHY; v. 43, n. 9 JUN 2020.
Web of Science Citations: 0

The Neotropical region exhibits the greatest worldwide diversity and the diversification history of several clades is related to the puzzling geomorphologic and climatic history of this region. The freshwater Amazon ecoregion contains the main hydrographic basins of the Neotropical region that are highly dendritic and ecologically diverse. It contains a rich and endemic fish fauna, including one of its most iconic and economically important representatives, the bony-tongue Arapaima gigas (Teleostei, Osteoglossiformes). Here, we evaluated the projected distribution of the genus in different historical periods (Present, Last Glacial Maximum, Last Interglacial Maximum and Near Future) and interpreted these results in light of the genomic diversity and modeled historical demography. For that, we combined species distribution models, population genetic analysis using SNPs and deep learning model selection. We analyzed a representative sample of the genus from the two basins where it naturally occurs, four localities in the Amazon (Am) and three in the Tocantins-Araguaia (To-Ar) basin, as well as individuals from three fish farms. We inferred a potentially smaller distribution in the glacial period, with a possible refuge in central Am. Our genetic data agrees with this result, suggesting a higher level of genetic diversity in the Am basin, compared to that observed in To-Ar. Our deep learning model comparison indicated that the To-Ar basin was colonized by the population from the Am basin. Considering a global warming scenario in the near future, A. gigas could reach an even larger range, especially if anthropogenic related dispersal occurs, potentially invading new areas and impacting their communities. (AU)

FAPESP's process: 18/22033-1 - An intercontinental approach for the investigation of chromosome evolution, genetic diversity and biogeography in the order Osteoglossiformes (Teleostei: Osteoglossomorpha). Part III
Grantee:Marcelo de Bello Cioffi
Support type: Regular Research Grants
FAPESP's process: 17/10240-0 - Genetic diversity, biogeography and evolution of Osteoglossiformes fishes (Teleostei, Osteoglossomorpha)
Grantee:Manolo Fernandez Perez
Support type: Scholarships in Brazil - Post-Doctorate