phaidra.vetmeduni.ac.at o:1685 DOI 10.1093/gbe/evad042 Seascape genomics and mitogenomic phylogeography of the sailfish (Istiophorus platypterus) Permeable phylogeographic barriers characterize the vast open ocean, boosting gene flow and counteracting population differentiation and speciation of widely distributed and migratory species. However, many widely distributed species consists of distinct populations throughout their distribution, evidencing that our understanding of how the marine environment triggers population and species divergence are insufficient. The sailfish is a circumtropical and highly migratory billfish that inhabits warm and productive areas. Despite its ecological and socioeconomic importance as a predator and fishery resource, the species is threatened by overfishing, requiring innovative approaches to improve their management and conservation status. Thus, we presented a novel high-quality reference genome for the species and applied a seascape genomics approach to understand how marine environmental features may promote local adaptation and how it affects gene flow between populations. We delimit two populations between the Atlantic and Indo-Western Pacific oceans and detect outlier loci correlated with sea surface temperature, salinity, oxygen, and chlorophyll concentrations. However, the most significant explanatory factor that explains the differences between populations was isolation by distance. Despite recent population drops, the sailfish populations are not inbred. For billfishes in general, genome-wide heterozygosity was found to be relatively low compared to other marine fishes, evidencing the need to counteract overfishing effects. In addition, in a climate change scenario, management agencies must implement state-of-the-art sequencing methods, consider our findings in their management plans, and monitor genome-wide heterozygosity over time to improve sustainable fisheries and the long-term viability of its populations. eng Population-Structure; Genetic Diversity; Marine Fish; Fisheries; Evolution; Accurate; Speciation; Discovery; Framework; Inference 2023-06-07T07:59:11.918Z LOMv1.0 Author BEGIN:VCARD VERSION:3.0 N:Ferrette;Bruno Lopes da Silva; FN:Bruno Lopes da Silva Ferrette X-ORCID:https://orcid.org/0000-0002-3108-9867 END:VCARD BEGIN:VCARD VERSION:3.0 N:Janke;Axel; FN:Axel Janke X-ORCID:https://orcid.org/0000-0002-9394-1904 END:VCARD BEGIN:VCARD VERSION:3.0 N:Mendonça;Fernando Fernandes; FN:Fernando Fernandes Mendonça X-ORCID:https://orcid.org/0000-0002-4806-9897 END:VCARD BEGIN:VCARD VERSION:3.0 N:Mourato;Bruno Leite; FN:Bruno Leite Mourato X-ORCID:https://orcid.org/0000-0001-8405-3983 END:VCARD BEGIN:VCARD VERSION:3.0 N:Arocha;Freddy; FN:Freddy Arocha X-ORCID:https://orcid.org/0000-0002-5814-0626 END:VCARD BEGIN:VCARD VERSION:3.0 N:Rotundo;Matheus Marcos; FN:Matheus Marcos Rotundo X-ORCID:https://orcid.org/0000-0003-1886-5320 END:VCARD BEGIN:VCARD VERSION:3.0 N:Rosa;Daniela; FN:Daniela Rosa X-ORCID:https://orcid.org/0000-0001-7156-7408 END:VCARD BEGIN:VCARD VERSION:3.0 N:Coelho;Rui; FN:Rui Coelho X-ORCID:https://orcid.org/0000-0003-3813-5157 END:VCARD BEGIN:VCARD VERSION:3.0 N:Williams;Samuel Mackey; FN:Samuel Mackey Williams X-ORCID:https://orcid.org/0000-0002-2251-2774 END:VCARD BEGIN:VCARD VERSION:3.0 N:De Jong;Menno J.; FN:Menno J. De Jong X-ORCID:https://orcid.org/0000-0003-2131-9048 END:VCARD BEGIN:VCARD VERSION:3.0 N:Winter;Sven; FN:Sven Winter X-ORCID:https://orcid.org/0000-0002-1890-0977 END:VCARD BEGIN:VCARD VERSION:3.0 N:Coimbra;Raphael T. F.; FN:Raphael T. F. Coimbra X-ORCID:https://orcid.org/0000-0002-6075-7203 END:VCARD https://w3id.org/kim/hcrt/scheme https://w3id.org/kim/hcrt/text Textdokument Text LOMv1.0 yes https://creativecommons.org/licenses/by/4.0 application/pdf 7799572 https://phaidra.vetmeduni.ac.at/o:1685 https://phaidra.vetmeduni.ac.at/api/object/o:1685/thumbnail LOMv1.0 discipline