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The paradox of retained genetic diversity of Hippocampus guttulatus in the face of demographic decline

2021-05Journal article Open access
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dc.contributor.authorStacy, Rupert
dc.contributor.authorPalma, Jorge
dc.contributor.authorCorreia, Miguel
dc.contributor.authorWilson, Anthony B.
dc.contributor.authorAndrade, Jose
dc.contributor.authorCastilho, Rita
dc.date.accessioned2021-06-29T10:49:03Z
dc.date.available2021-06-29T10:49:03Z
dc.date.issued2021-05
dc.description.abstractGenetic diversity is the raw foundation for evolutionary potential. When genetic diversity is significantly reduced, the risk of extinction is heightened considerably. The long-snouted seahorse (Hippocampus guttulatus) is one of two seahorse species occurring in the North-East Atlantic. The population living in the Ria Formosa (South Portugal) declined dramatically between 2001 and 2008, prompting fears of greatly reduced genetic diversity and reduced effective population size, hallmarks of a genetic bottleneck. This study tests these hypotheses using samples from eight microsatellite loci taken from 2001 and 2013, on either side of the 2008 decline. The data suggest that the population has not lost its genetic diversity, and a genetic bottleneck was not detectable. However, overall relatedness increased between 2001 to 2013, leading to questions of future inbreeding. The effective population size has seemingly increased close to the threshold necessary for the population to retain its evolutionary potential, but whether these results have been affected by sample size is not clear. Several explanations are discussed for these unexpected results, such as gene flow, local decline due to dispersal to other areas of the Ria Formosa, and the potential that the duration of the demographic decline too short to record changes in the genetic diversity. Given the results presented here and recent evidence of a second population decline, the precise estimation of both gene flow and effective population size via more extensive genetic screening will be critical to effective population management.pt_PT
dc.description.sponsorship16-02-01-FMP-54, MAR-01.04.02-FEAMP-0029, UID/Multi/04326/2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1038/s41598-021-89708-0pt_PT
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/10400.1/16676
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherNature Resarchpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEffective population-sizept_PT
dc.subjectLong-snouted seahorsept_PT
dc.subjectRia Formosa lagoonpt_PT
dc.subjectPer-generation rulept_PT
dc.subjectAllele frequencypt_PT
dc.subjectLinkage disequilibriumpt_PT
dc.subjectComputer-programpt_PT
dc.subjectR-packagept_PT
dc.subjectMicrosatellite markerspt_PT
dc.subjectInbreeding depressionpt_PT
dc.titleThe paradox of retained genetic diversity of Hippocampus guttulatus in the face of demographic declinept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1pt_PT
oaire.citation.startPage10434pt_PT
oaire.citation.titleScientific Reportspt_PT
oaire.citation.volume11pt_PT
person.familyNamePalma
person.familyNameTEODORO CORREIA
person.familyNameAndrade
person.familyNameCastilho
person.givenNameJorge
person.givenNameMIGUEL JOSÉ
person.givenNameJose
person.givenNameRita
person.identifierE-8149-2010
person.identifier452212
person.identifier.ciencia-idCA1D-2BD3-AE28
person.identifier.ciencia-idA71E-B874-01B0
person.identifier.ciencia-idD514-1A21-F020
person.identifier.ciencia-id0513-0407-A6C1
person.identifier.orcid0000-0002-5790-3433
person.identifier.orcid0000-0003-1846-1174
person.identifier.orcid0000-0002-5482-9776
person.identifier.orcid0000-0003-0727-3688
person.identifier.ridB-6185-2008
person.identifier.scopus-author-id7101903881
person.identifier.scopus-author-id16635337100
person.identifier.scopus-author-id7201722097
person.identifier.scopus-author-id56271196600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication630748a3-4850-4777-b5f2-8d6ff6787476
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relation.isAuthorOfPublication.latestForDiscovery630748a3-4850-4777-b5f2-8d6ff6787476

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