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Assessing the morphological variability of unio delphinus spengler, 1783 (Bivalvia: Unionidae) using geometric morphometry

2014-02Journal article Open access
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dc.contributor.authorMorais, Pedro
dc.contributor.authorRufino, Marta M.
dc.contributor.authorReis, Joaquim
dc.contributor.authorDias, Ester
dc.contributor.authorSousa, Ronaldo
dc.date.accessioned2018-12-07T14:52:57Z
dc.date.available2018-12-07T14:52:57Z
dc.date.issued2014-02
dc.description.abstractThe morphological variability of freshwater bivalve species, observed between and within river basins, may hamper their correct identification, even by experienced researchers. Classic morphometric measurements, i.e. shell length, height and thickness, or their ratios, are generally insufficient to distinguish populations and/or species. These issues may be overcome using a geometric morphometric method, which allows analysis of the overall shape of the individual, independently of its size. Thus, we aimed to test the usefulness of two geometric morphometric tools, landmarks and sliding semilandmarks, to evaluate the morphological variability of Unio delphinus Spengler, 1783 in three habitats of the Guadiana Basin (SW Iberian Peninsula, Europe): estuary, river and stream. We used 13 landmarks located on the shell interior (at the teeth, muscle scars and pallial line) and 35 sliding semilandmarks for the shell contour. These morphometric analyses showed that the shell shape of U. delphinus differs significantly among different habitats. Estuarine and stream shells are the most disparate (James index = 649.114, permutation P-value <0.001) and variability is not related to variations in shell size. The main differences in shell morphology are the following: (1) estuarine shells are more elongate, while riverine shells are more subovate; (2) the anterior curvature at the umbo is steeper in estuarine and riverine shells; (3) estuarine shells have an arched curvature at the ventral part of the shell, which is absent in specimens from the other habitats. Our data suggest that the morphology of U. delphinus shells might be influenced by the water flow characteristics of each habitat, since shells exhibited characteristics that are typically observed in freshwater mussels from lotic and lentic habitats.
dc.description.sponsorshipFundacao para a Ciencia e a Tecnologia [SFRH/BPD/40832/2007]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1093/mollus/eyt037
dc.identifier.issn0260-1230
dc.identifier.issn1464-3766
dc.identifier.urihttp://hdl.handle.net/10400.1/11282
dc.language.isoeng
dc.peerreviewedyes
dc.publisherOxford University Press
dc.relationINFLUENCE OF THE NON-INDIGINEOUS BIVALVE CORBICULA FLUMINEA MULLER, 1774 ON THE ECOSYSTEM FUNCTIONING OF TWO PORTUGUESE ESTUARIES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectFresh-water Mussels
dc.subjectIberian Peninsula
dc.subjectShell morphology
dc.subjectSpecies bivalvia
dc.subjectShape-analysis
dc.subjectBasin
dc.subjectPopulations
dc.subjectUnionoida
dc.subjectMollusca
dc.subjectManagement
dc.titleAssessing the morphological variability of unio delphinus spengler, 1783 (Bivalvia: Unionidae) using geometric morphometry
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleINFLUENCE OF THE NON-INDIGINEOUS BIVALVE CORBICULA FLUMINEA MULLER, 1774 ON THE ECOSYSTEM FUNCTIONING OF TWO PORTUGUESE ESTUARIES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F40832%2F2007/PT
oaire.citation.endPage23
oaire.citation.startPage17
oaire.citation.titleJournal of Molluscan Studies
oaire.citation.volume80
person.familyNameMorais
person.familyNameRufino
person.givenNamePedro
person.givenNameMarta
person.identifier424141
person.identifier.ciencia-id1A19-7E90-8BDD
person.identifier.ciencia-id7E12-F7C8-156B
person.identifier.orcid0000-0002-0861-5566
person.identifier.orcid0000-0002-0734-7491
person.identifier.ridF-2815-2011
person.identifier.scopus-author-id7005946306
person.identifier.scopus-author-id6701333407
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication1c722a09-343d-4191-9c67-ab86240a4708
relation.isAuthorOfPublication23e07cbe-7178-4a1c-ad59-533d1375bf87
relation.isAuthorOfPublication.latestForDiscovery1c722a09-343d-4191-9c67-ab86240a4708
relation.isProjectOfPublicatione1dbdb8c-b778-4e7e-8ad2-2638cfb65e65
relation.isProjectOfPublication.latestForDiscoverye1dbdb8c-b778-4e7e-8ad2-2638cfb65e65

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