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Development of microsatellite markers and evaluation of genetic diversity of the Amazonian ornamental fish Pterophyllum scalare

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Abstract

The objective of the present work was to develop species-specific microsatellite markers for P. scalare and to analyze the diversity and genetic structure of a wild population, from the Amazon River, and three commercial stocks (common, marble, and clown morphological variants), from farmers in Vieras-Minas Gerais. Through microsatellite-enriched genetic libraries, 11 microsatellite markers with adequate amplification patterns were characterized. Population genetic analysis identified eight polymorphic loci that generated 66 alleles ranging from two alleles (PSCA1B3) to nine (PSCA2H1). The polymorphic information content ranged from 0.031 to 0.827. High genetic differentiation was observed between the wild population and the stocks, and moderate differentiation between the three stocks. Deviation in the Hardy-Weinberg equilibrium was observed in one locus in the wild population, in five loci in the common morphological variant, in two in the marble, and in two in the clown morphological variant. Bayesian analysis of genetic structure revealed the existence of two clusters, one represented by the natural population and the other by the stocks. The developed microsatellite markers serve as a tool for the analysis of diversity and genetic structure and conservation studies of P. scalare.

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All files from this study are available from the authors upon reasonable request.

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Acknowledgements

The authors would like to thank the “CAPES” and the “Programa de Pós Graduação em Ciência Animal” (State University of Londrina).

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Funding

This study was supported by the “Coordenação de Aperfeiçoamento de Pessoal de Nível superior (CAPES).”

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Contributions

Conceptualization: Victor César Freitas Pandolfi, Felipe Pinheiro de Souza, Ed Christian Suzuki de Lima and Andrei Lincoln Yamachita; Methodology: Victor César Freitas Pandolfi, Felipe Pinheiro de Souza, Sara Mataroli de Godoy, Andrei Lincoln Yamachita and Daniele Cassiano Feliciano; Formal analysis and investigation: Victor César Freitas Pandolfi, Felipe Pinheiro de Souza and Sara Mataroli de Godoy; Writing - original draft preparation: Victor César Freitas Pandolfi and Felipe Pinheiro de Souza; Writing—review and editing: Victor César Freitas Pandolfi, Felipe Pinheiro de Souza, Ed Christian Suzuki de Lima and Sara Mataroli de Godoy; Resources: Jayme Aparecido Povh, Denise Rocha Ayres, Annaiza Braga Bignardi and Jefferson Murici Penafort; Supervision: Nelson Mauricio Lopera-Barrero, Claudete de Fátima Ruas and Ulisses de Pádua Pereira.

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Correspondence to Victor César Freitas Pandolfi.

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The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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The methodologies used were approved by the Animal Use Ethics Committee of the State University of Londrina (CEUA_UEL no 110/2018).

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The authors declare no competing interests.

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Pandolfi, V.C.F., Yamachita, A.L., de Souza, F.P. et al. Development of microsatellite markers and evaluation of genetic diversity of the Amazonian ornamental fish Pterophyllum scalare. Aquacult Int 29, 2435–2449 (2021). https://doi.org/10.1007/s10499-021-00757-8

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  • DOI: https://doi.org/10.1007/s10499-021-00757-8

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