ArticleJournal of fish biology2026
A fractal pattern of hierarchical genetic population structure in mixed stocks across fish segregated by dams revealed by genomic resources for curimba Prochilodus lineatus.
Article in Journal of fish biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Genomic resources, new microsatellite markers and a novel observation of a fractal pattern in the genetic population structure are presented for curimba, Prochilodus lineatus, a freshwater migratory model species of South America. Our main goals were to investigate the presence of mixed fish stocks and the effects of damming-induced fragmentation, as well as hatchery releases, over the genetic diversity of this species population. We focused on the upper segment of the highly fragmented Grande River, Minas Gerais, Brazil, within the megadiverse La Plata River basin. Using maximum likelihood estimation, different genetically admixed co-occurring fish stocks were identified. These served as input for a second analysis, the results of which were further examined as a hierarchical genetic structure investigation. Each of these three iterative steps consistently revealed two newly rearranged internal groups within the previously defined clusters (2
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