The genomic footprint of whaling and isolation in fin whale populations
11 de septiembre
Te invitamos a leer el artículo "The genomic footprint of whaling and isolation in fin whale populations" publicado en nature communications, a cargo del profesor investigador Dr. Andrés Moreno y su equipo de trabajo de la UGA-Langebio.
Autores: Sergio F. Nigenda-Morales, Meixi Lin, Paulina G. Nuñez-Valencia, Christopher C. Kyriazis, Annabel C. Beichman, Jacqueline A. Robinson, Aaron P. Ragsdale, Jorge Urbán R., Frederick I. Archer, Lorena Viloria-Gómora, María José Pérez-Álvarez, Elie Poulin, Kirk E. Lohmueller, Andrés Moreno-Estrada, Robert K. Wayne
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Advanced Genomics Unit, National Laboratory of Genomics for Biodiversity (UGA-Langebio)
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Center for Research and Advanced Studies (Cinvestav) Department of Ecology and Evolutionary Biology
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University of California Department of Genome Sciences
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University of Washington
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Seattle Institute for Human Genetic
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University of California, San Francisco (UCSF) Departamento de Ciencias Marinas y Costeras,
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Universidad Autónoma de Baja California Sur (UABCS) Marine Mammal and Turtle Division,
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Southwest Fisheries Science Center Departamento de Ciencias Marinas y Costeras,
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Universidad Autónoma de Baja California Sur (UABCS) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE)
Felicitamos al estudiantado y profesorado que contribuyeron en esta investigación por su arduo trabajo.
Summary:
Twentieth century industrial whaling pushed several species to the brink of extinction, with fin whales being the most impacted. However, a small, resident population in the Gulf of California was not targeted by whaling. Here, we analyzed 50 whole-genomes from the Eastern North Pacific (ENP) and Gulf of California (GOC) fin whale populations to investigate their demographic history and the genomic effects of natural and human-induced bottlenecks. We show that the two populations diverged ~16,000 years ago, after which the ENP population expanded and then suffered a 99% reduction in effective size during the whaling period. In contrast, the GOC population remained small and isolated, receiving less than one migrant per generation. However, this low level of migration has been crucial for maintaining its viability. Our study exposes the severity of whaling, emphasizes the importance of migration, and demonstrates the use of genome-based analyses and simulations to inform conservation strategies.
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