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The small giant clam, Tridacna maxima exhibits minimal population genetic structure in the Red sea and genetic differentiation from the Gulf of Aden

2020-10Journal article Open access
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dc.contributor.authorLim, Kah Kheng
dc.contributor.authorRossbach, Susann
dc.contributor.authorGeraldi, Nathan R.
dc.contributor.authorSchmidt-Roach, Sebastian
dc.contributor.authorSerrao, Ester
dc.contributor.authorDuarte, Carlos M.
dc.date.accessioned2020-11-11T17:14:14Z
dc.date.available2020-11-11T17:14:14Z
dc.date.issued2020-10
dc.description.abstractThe Red Sea serves as a natural laboratory to investigate mechanisms of genetic differentiation and population dynamics of reef organisms due to its high species endemism. Giant clams, important yet understudied coral reef engineering species, are ideal candidates for such study in this region. This paper presents the first population genetics study of giant clams covering the entire East coast of the Red Sea. Our study aimed to investigate the population structure of the small giant clam, Tridacna maxima, based on 501-bp fragment of the cytochrome c oxidase I gene from 194 individuals (126 new sequences from this study plus 68 sequences from GenBank), collected from 14 locations in the Red Sea and Gulf of Aden (RSGA). For the genetic analysis, each sampling site was treated as a population. T. maxima showed high genetic diversity, with high gene flow in almost all sampling sites. The insignificant global #ST-value of 0.02 (p > 0.05) suggests the presence of one large, panmictic population across a wide range of temperature and salinity gradients in the RSGA. Despite this, the population in Djibouti was genetically differentiated from the other 11 populations in the Red Sea, suggesting a connectivity break between the Red Sea and the Gulf of Aden. These results could be explained by the oceanographic features facilitating wide larval transport inside the Red Sea, and creating a dispersal barrier to the Gulf of Aden. Besides larval dispersal by currents, apparent successful establishment following dispersal is probably facilitated by the mode and time of reproduction as well as the ability of T. maxima to achieve high fitness in the highly variable environmental conditions of the Red Sea.pt_PT
dc.description.sponsorshipKing Abdullah University of Science & Technology: BAS/1/1071-01-01pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3389/fmars.2020.570361pt_PT
dc.identifier.issn2296-7745
dc.identifier.urihttp://hdl.handle.net/10400.1/14816
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectTridacninept_PT
dc.subjectSpecies distributionpt_PT
dc.subjectConservationpt_PT
dc.subjectPopulation geneticspt_PT
dc.subjectOceanographic barrierspt_PT
dc.titleThe small giant clam, Tridacna maxima exhibits minimal population genetic structure in the Red sea and genetic differentiation from the Gulf of Adenpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage570361pt_PT
oaire.citation.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume7pt_PT
person.familyNameSerrao
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id7004093604
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f

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