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dc.contributor.authorKing, Erika M.
dc.contributor.authorMcPhee, Megan V.
dc.contributor.authorVulstek, Scott C.
dc.contributor.authorCunningham, Curry
dc.contributor.authorRussell, Joshua R.
dc.contributor.authorTallmon, David
dc.date.accessioned2024-02-07T22:43:40Z
dc.date.available2024-02-07T22:43:40Z
dc.date.issued2023-07-14
dc.identifier.citationKing, E., McPhee, M. V., Vulstek, S. C., Cunningham, C. J., Russell, J. R., & Tallmon, D. A. (2023). Alternative life‐history strategy contributions to effective population size in a naturally spawning salmon population. Evolutionary Applications, 16(8), 1472-1482. https://doi.org/10.1111/eva.13580en_US
dc.identifier.issn1752-4563
dc.identifier.urihttp://hdl.handle.net/11122/14840
dc.description.abstractAlternative life-history tactics are predicted to affect within-population genetic processes but have received little attention. For example, the impact of precocious males on effective population size (Ne) has not been quantified directly in Pacific salmon Oncorhynchus spp., even though they can make up a large percentage of the total male spawners. We investigated the contribution of precocial males (“jacks”) to Ne in a naturally spawning population of Coho Salmon O. kisutch from the Auke Creek watershed in Juneau, Alaska. Mature adults that returned from 2009 to 2019 (~8000 individuals) were genotyped at 259 single-nucleotide polymorphism (SNP) loci for parentage analysis. We used demographic and genetic methods to estimate the effective number of breeders per year (Nb). Jack contribution to Nb was assessed by comparing values of Nb calculated with and without jacks and their offspring. Over a range of Nb values (108–406), the average jack contribution to Nb from 2009 to 2015 was 12.9% (SE = 3.8%). Jacks consistently made up over 20% of the total male spawners. The presence of jacks did not seem to influence Nb/N. The linkage disequilibrium Ne estimate was lower than the demographic estimate, possibly due to immigration effects on population genetic processes: based on external marks and parentage data, we estimated that immigrant spawners produced 4.5% of all returning offspring. Our results demonstrate that jacks can influence Nb and Ne and can make a substantial contribution to population dynamics and conservation of threatened stocks.en_US
dc.description.sponsorshipAlaska Sea Grant. Douglas Island Pink Chum, Inc.en_US
dc.description.tableofcontentsAbstract -- 1. Introduction -- 2. Materials and Methods -- 3. Results -- 4. Discussion -- Acknowledgments -- Conflict of Interest Statement -- Open Research -- Supporting Information -- References.en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sons, Inc.en_US
dc.subjecteffective number of breedersen_US
dc.subjecteffective population sizeen_US
dc.subjectlife historyen_US
dc.subjectsalmonidsen_US
dc.subjectSNPsen_US
dc.titleAlternative life-history strategy contributions to effective population size in a naturally spawning salmon populationen_US
dc.typeArticleen_US
dc.description.peerreviewYesen_US
refterms.dateFOA2024-02-07T22:43:42Z
dc.identifier.journalEvolutionary Applicationsen_US


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