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Temperature effects on gametophyte life-history traits and geographic distribution of two cryptic kelp species

2012-06Journal article Open Access
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dc.contributor.authorValeria Oppliger, L.
dc.contributor.authorCorrea, Juan A.
dc.contributor.authorEngelen, Aschwin H.
dc.contributor.authorTellier, Florence
dc.contributor.authorVieira, Vasco
dc.contributor.authorFaugeron, Sylvain
dc.contributor.authorValero, Myriam
dc.contributor.authorGomez, Gonzalo
dc.contributor.authorDestombe, Christophe
dc.date.accessioned2018-12-07T14:53:33Z
dc.date.available2018-12-07T14:53:33Z
dc.date.issued2012-06
dc.description.abstractA major determinant of the geographic distribution of a species is expected to be its physiological response to changing abiotic variables over its range. The range of a species often corresponds to the geographic extent of temperature regimes the organism can physiologically tolerate. Many species have very distinct life history stages that may exhibit different responses to environmental factors. In this study we emphasized the critical role of the haploid microscopic stage (gametophyte) of the life cycle to explain the difference of edge distribution of two related kelp species. Lessonia nigrescens was recently identified as two cryptic species occurring in parapatry along the Chilean coast: one located north and the other south of a biogeographic boundary at latitude 29-30 degrees S. Six life history traits from microscopic stages were identified and estimated under five treatments of temperature in eight locations distributed along the Chilean coast in order to (1) estimate the role of temperature in the present distribution of the two cryptic L. nigrescens species, (2) compare marginal populations to central populations of the two cryptic species. In addition, we created a periodic matrix model to estimate the population growth rate (lambda) at the five temperature treatments. Differential tolerance to temperature was demonstrated between the two species, with the gametophytes of the Northern species being more tolerant to higher temperatures than gametophytes from the south. Second, the two species exhibited different life history strategies with a shorter haploid phase in the Northern species contrasted with considerable vegetative growth in the Southern species haploid stage. These results provide strong ecological evidence for the differentiation process of the two cryptic species and show local adaptation of the life cycle at the range limits of the distribution. Ecological and evolutionary implications of these findings are discussed.
dc.description.sponsorshipCONICYT-FRENCH EMBASSADY; French Ministry of Education and Research; College Doctoral Franco-Chilien; "ARCUS'' of the French Ministry of Foreign Affairs; FCT-CNRS; FCT scholarships [SFRH/BPD/7153/2001, SFRH/BPD/63703/2009]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1371/journal.pone.0039289
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11565
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library of Science
dc.relationDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMatrix models
dc.subjectRange Limits
dc.subjectPhaeophyceae
dc.subjectLaminariales
dc.subjectGrowth
dc.subjectBoundaries
dc.subjectSurvival
dc.subjectSeaweeds
dc.subjectSea
dc.subjectReproduction
dc.titleTemperature effects on gametophyte life-history traits and geographic distribution of two cryptic kelp species
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F7153%2F2001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F63703%2F2009/PT
oaire.citation.endPage10
oaire.citation.startPage158
oaire.citation.startPage1
oaire.citation.titlePLoS ONE
oaire.citation.volume7
oaire.fundingStreamSFRH
person.familyNameEngelen
person.familyNameVieira
person.givenNameAschwin
person.givenNameVasco
person.identifier.ciencia-id911A-9A0C-744D
person.identifier.ciencia-idAC1D-BF40-84E8
person.identifier.orcid0000-0002-9579-9606
person.identifier.orcid0000-0001-9858-6254
person.identifier.ridM-3432-2013
person.identifier.ridABC-6486-2022
person.identifier.scopus-author-id6701622770
person.identifier.scopus-author-id56962707300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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