Abstract
Identifying the population genetic structure and adaptive diversity of fishery resources is essential for their resilience and sustainability. Pleoticus muelleri is one of the most important fishing resources in Argentina. It inhabits the Southwestern Atlantic Ocean from 20° to 50° S. We genotyped 1740 SNPs in 42 individuals using Restriction Site-Associated DNA Sequencing and discovered two genetic lineages, one in the south (Golfo San Jorge and off Rawson), and the other in the north of its distribution (Macaé). Individuals found in intermediate locations (Punta del Diablo and Rio Grande do Sul) suggested the existence of admixture between these two groups. In addition, we found loci correlated with some environmental variables suggesting the existence of divergent selection between both populations. The STRUCTURE analysis including only putatively neutral loci gave similar results to the one with all loci, indicating either differentiation originated because of a physical barrier to dispersion, or that the lack of gene flow because of selection has already affected neutral loci. This knowledge can contribute to its sustainable management and conservation.
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Data Availability
The data underlying this article is available in Repositorio Institucional CONICET Digital at https://ri.conicet.gov.ar/handle/11336/194568, and in NCBI Sequence Read Archive (SRA) under the Bioproject accession number PRJNA956080.
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Acknowledgements
We greatly appreciate the help of Pedro Sanmartin Prata (Universidade Federal do Rio Grande do Sul), Jaime Ezquerra and Javier Bugallo (Pesquera Santa Cruz), Martín Varisco (UNPSJB) and Juan de la Garza (INIDEP) within the framework of the Pampa Azul-Golfo San Jorge 201611 campaign, for their help with sampling. We thank three anonymous reviewers whose comments greatly improved this manuscript.
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This study was funded by Universidad Nacional de la Patagonia Austral (PI 29/A381 PDTS UNPA-CaPeCA and PI 29/A440-3); Consejo Federal de Ciencia y Tecnología (PFIP-127/2012); the Argentine Agencia Nacional de Promoción Científica y Tecnológica, Fondo para la Investigación Científica y Tecnológica, Préstamo BID-PICT 2018–01674; Ministerio de Ciencia, Tecnología e Innovación (MINCyT) Argentina, Programa “INVESTIGACIÓN, DESARROLLO E INNOVACIÓN EN CIENCIAS DEL MAR” (PIDT Pampa Azul C15); CONICET; Universidad Maimónides and Fundación de Historia Natural Félix de Azara.
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EG: Conceptualization, Resources, Data Curation, Investigation, Formal Analysis, Visualization, Writing—Original Draft. SC: Resources, Investigation, Formal Analysis, Writing—Review and Editing. PDC: Conceptualization, Resources, Funding Acquisition, Investigation, Writing—Review and Editing. VC: Formal Analysis, Writing—Review and Editing. PPB: Conceptualization, Funding Acquisition, Formal Analysis, Validation, Writing—Original Draft, Review and Editing, Supervision and Project administration.
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Gesto, E., Ceballos, S., De Carli, P. et al. Population genomic analysis of the commercially important shrimp Pleoticus muelleri (Crustacea: Decapoda: Solenoceridae) reveals the existence of two, northern and southern, lineages with adaptive genetic differences. Mar Biol 171, 16 (2024). https://doi.org/10.1007/s00227-023-04332-y
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DOI: https://doi.org/10.1007/s00227-023-04332-y