Evidence of discrete yellowfin tuna (Thunnus albacares) populations demands rethink of management for this globally important resource
Grewe, PM and Feutry, P and Hill, PL and Gunasekera, RM and Schaefer, KM and Itano, DG and Fuller, DW and Foster, SD and Davies, CR, Evidence of discrete yellowfin tuna (Thunnus albacares) populations demands rethink of management for this globally important resource, Scientific Reports, 5 Article 16916. ISSN 2045-2322 (2015) [Refereed Article]
Tropical tuna fisheries are central to food security and economic development of many regions of the world. Contemporary population assessment and management generally assume these fisheries exploit a single mixed spawning population, within ocean basins. To date population genetics has lacked the required power to conclusively test this assumption. Here we demonstrate heterogeneous population structure among yellowfin tuna sampled at three locations across the Pacific Ocean (western, central, and eastern) via analysis of double digest restriction-site associated DNA using Next Generation Sequencing technology. The differences among locations are such that individuals sampled from one of the three regions examined can be assigned with close to 100% accuracy demonstrating the power of this approach for providing practical markers for fishery independent verification of catch provenance in a way not achieved by previous techniques. Given these results, an extended pan-tropical survey of yellowfin tuna using this approach will not only help combat the largest threat to sustainable fisheries (i.e. illegal, unreported, and unregulated fishing) but will also provide a basis to transform current monitoring, assessment, and management approaches for this globally significant species.
fishery, fishing, genetic marker, human, human experiment, human tissue, monitoring, next generation sequencing, Pacific Ocean, population structure, restriction site, species, animal, classification, economics, ecosystem, environmental protection