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Phylogeography of feral Monteiro pig in the Brazilian Pantanal Ecosystem

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Abstract

The Monteiro is a feral pig found in the Brazilian Pantanal ecosystem. The goal of this research is to generate data and knolewdge related to animal populations wich can be used for management and development of an in vitro conservation program for animal resourses at Pantanal ecosystem. The present study evaluated animals sampled from 10 distinct locations within the region, using 19 microsatellite markers (N = 189) and the control region of mitochondrial DNA (mtDNA) (N = 392). Low genetic differences were found between populations with the microsatellite data. The FST range was between 0.009 and 0.063 (p-value < 0.05). The Mantel test corroborated with previous results, as low correlations between genetic and geographic distances were observed (r2 = 0.2309, p = 0.06). Bayesian analysis for genetic structure identification placed the Monteiro pigs into three main clusters (MOB, Pop 1 and all others Pantanal populations). Most of the Monteiro pigs share a single European haplotype as seen by mtDNA analyses. This haplotype is not exclusive, as it is shared with other swine populations (commercial and other locally adapted breeds). Monteiro populations from different geographic locations within Pantanal are not isolated and can be considered as a large unique population. Since animals roam freely to seek food and water, or even due to seasonal flooding of their habitat, the Monteiro populations presented absence of major genetic structure and evidence of high gene flow. These results can be used to create a management plan and in situ and ex situ conservation program for conservation and use of the Monteiro breed in the Pantanal ecosystem.

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Acknowledgements

This work was supported by CAPES (Coordination of Superior Level Staff Improvement), CNPq (National Council for Scientific and Technological Development), Embrapa (Brazilian Agricultural Research Corporation) and INCT Pecuaria (MCT/FINEP/CNPq/FAPEMIG). We also thank Embrapa Swine and Poultry, Embrapa Pantanal and EMATER-DF for the biological material. We wish to thank Aderbal Cavalcante Neto for the unpublished mtDNA sequences from locally adapted breeds; and Potira Hermuche from Brasilia University for the map on Fig. 1.

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CM, ARC and SRP designed study; material preparation and data collection were performed by ECS, UP and CAS; data analysis were performed by ECS; original draft preparation by CM and DAF; writing, review and editing by CM, DAF, ARC, UP and SRP.

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Correspondence to Samuel R. Paiva.

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The authors declare that they have no conflict of interest.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Informed consent was obtained from all individuals participants included in the study.

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Silva, E.C., McManus, C., Piovezan, U. et al. Phylogeography of feral Monteiro pig in the Brazilian Pantanal Ecosystem. Genetica 148, 183–193 (2020). https://doi.org/10.1007/s10709-020-00099-y

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  • DOI: https://doi.org/10.1007/s10709-020-00099-y

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