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Seagrass connectivity on the west coast of Africa supports the hypothesis of grazer-mediated seed dispersal

2022Journal article Open access
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dc.contributor.authorTavares, Ana I
dc.contributor.authorAssis, Jorge
dc.contributor.authorPatrício, A. R.
dc.contributor.authorFerreira, Rogério
dc.contributor.authorCheikh, Mohamed Ahmed Sidi
dc.contributor.authorBandeira, Salomao
dc.contributor.authorRegalla, Aissa
dc.contributor.authorSilva Dos Santos, Iderlindo Jorge
dc.contributor.authorPotouroglou, Maria
dc.contributor.authorNicolau, Suzana
dc.contributor.authorTeodosio, MA
dc.contributor.authorAlmada, Carmen
dc.contributor.authorSantos, Rui
dc.contributor.authorPearson, Gareth Anthony
dc.contributor.authorSerrao, Ester A.
dc.date.accessioned2022-09-13T15:46:50Z
dc.date.available2022-09-13T15:46:50Z
dc.date.issued2022
dc.description.abstractPopulation connectivity influences the distribution of genetic diversity and divergence along a species range, as the likelihood of extinction or differentiation increases in isolated populations. However, there is still poor understanding of the processes mediating interpopulation dispersal in marine species that are sessile and lack planktonic life stages. One such case is the seagrass species Halodule wrightii, which produces basal seeds, although detached plants can drift. Along the tropical western coast of Africa, this species occurs in distant discontinuous habitats, raising the question of how interpopulation dispersal is mediated. The species is a key source of ecosystem functions including feeding large migratory grazers. This study aims to infer whether genetic differentiation of the seagrass H. wrightii along the western coast of Africa supports a hypothesis of predominant transportation of rafting seagrass by ocean currents, versus the hypothesis of biotic vectors of dispersal. Additional hypotheses were addressed concerning range-wide clonality and genetic diversity, assessed with microsatellite markers on populations of the west coast of Africa from Mauritania to Angola. Population genetic diversity and structure were compared with predictions from biophysical models of dispersal by oceanographic currents. The genetic data revealed low divergence among most populations, in strong contrast with predictions of very low probability of connectivity mediated by currents along the western African coastline. Moderate to high genotypic diversity showed important seed recruitment, but genetic and genotypic diversities were lower at range edges. Populations north and south of the equator were differentiated, and remarkably, so were neighboring equatorial populations despite their proximity. These results reveal independent sources of colonization of meadows in these islands, which are major habitat for migratory grazing green turtles, also supporting the hypothesis of biotically mediated seed transport. The importance of seagrass for conservation of endangered macrofauna has been widely reported; here we report evidence supporting the reciprocal role, that macrofauna protection can also plays a role in long-term survival and reproductive success of seagrass.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationANA I. TAVARES et al. Seagrass Connectivity on the West Coast of Africa Supports the Hypothesis of Grazer-Mediated Seed Dispersal. Frontiers in Marine Science, [s. l.], v. 9, 2022. Disponível em: https://discovery.ebsco.com/linkprocessor/plink?id=11e8e8a2-6068-32fa-9dc4-a57b87e0be2b. Acesso em: 13 set. 2022. https://doi.org/10.3389/fmars.2022.809721pt_PT
dc.identifier.doi10.3389/fmars.2022.809721pt_PT
dc.identifier.issn22967745
dc.identifier.urihttp://hdl.handle.net/10400.12/8764
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Media S.A.pt_PT
dc.relationFCT - Foundation for Science and Technologypt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectWestern Africapt_PT
dc.subjectSeagrasspt_PT
dc.subjectHalodule wrightiipt_PT
dc.subjectPopulation connectivitypt_PT
dc.subjectDispersalpt_PT
dc.titleSeagrass connectivity on the west coast of Africa supports the hypothesis of grazer-mediated seed dispersalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.citation.conferencePlaceSuitzerlandpt_PT
oaire.citation.endPage13pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume9pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameTavares
person.familyNameAssis
person.familyNameda Silva Ferreira
person.familyNameBandeira
person.familyNameSilva dos Santos
person.familyNamePotouroglou
person.familyNameNicolau
person.familyNameANICA TEODÓSIO
person.familyNameBorges Alves Almada
person.familyNameSantos
person.familyNamePearson
person.givenNameAna I
person.givenNameJorge
person.givenNameRogério Francisco
person.givenNameSalomao
person.givenNameIderlindo Jorge
person.givenNameMaria
person.givenNameSuzana
person.givenNameMARIA ALEXANDRA
person.givenNameCarmen Helena
person.givenNameRui
person.givenNameGareth Anthony
person.identifier1542295
person.identifierG-9688-2012
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person.identifier.ciencia-id6317-3D6C-C495
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person.identifier.orcid0000-0002-6624-4820
person.identifier.orcid0000-0002-2889-4523
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person.identifier.orcid0000-0001-8473-1991
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-0851-890X
person.identifier.orcid0000-0002-0768-464X
person.identifier.ridJ-3911-2013
person.identifier.scopus-author-id57203900379
person.identifier.scopus-author-id53463298700
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id7201899326
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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