Repository logo
 
Publication

Analysis of sexual phenotype and prezygotic fertility in natural populations of Fucus spiralis, F. vesiculosus (Fucaceae, Phaeophyceae) and their putative hybrids

2005Journal article Open access
Simple item page
dc.contributor.authorBillard, E.
dc.contributor.authorSerrão, Ester
dc.contributor.authorPearson, G. A.
dc.contributor.authorEngel, C. R.
dc.contributor.authorDestombe, C.
dc.contributor.authorValero, Myriam
dc.date.accessioned2014-06-03T12:29:55Z
dc.date.available2014-06-03T12:29:55Z
dc.date.issued2005
dc.date.updated2014-05-21T13:43:24Z
dc.description.abstractIn the genus Fucus, the character dioecy/hermaphroditism has undergone multiple state changes and hybridization is possible between taxa with contrasting mating systems, e.g. between the dioecious Fucus vesiculosus and the hermaphrodite F. spiralis. In the context of mating system evolution, we evaluated the potential consequences of hybridization by studying the variation in sexual phenotype and prezygotic fertility. Firstly, as a result of hybridization between the two sexual systems, gender variation may arise depending on the relative importance of genes with large versus small phenotypic effects. We thus qualitatively examined the extent of gender variation within and among individual hybrids in comparison with both parental species. Secondly, if hybridization breaks up co-adapted gene complexes, hybrid fertility may be reduced in comparison with both parental species. Therefore, we also quantified male and female prezygotic fertility in parental species and their hybrids in order to test for reduction in hybrid fitness. A total of 89 sexually mature individuals (20 F. spiralis, 40 F. vesiculosus, 10 hermaphrodite hybrids and 19 dioecious hybrids) were sampled in two geographically distant regions (France and Portugal) and six conceptacles per individual were observed. Within-individual variation was very restricted qualitatively – only one hybrid carried a conceptacle with a different sexual phenotype from the five others – as well as quantitatively. This suggests a simple genetic system for sex determination involving a few genes with major effects. In addition, analyses showed no significant decrease in hybrid fertility compared with parental species. Moreover, hybrids exhibited all sexual phenotypes, suggesting several generations of hybridization and backcrossing and, therefore, that hybrids are reproductively successful. Finally, the occurrence of sterile paraphyses in female and hermaphrodite individuals was interpreted as a relic of male function and suggests that, as in higher plants, evolution from hermaphroditism to dioecy may be the most parsimonious pathway.por
dc.identifier.citationBillard, E.; Serrão, E.A.; Pearson, G.A.; Engel, C.R.; Destombe, C.; Valero, M.Analysis of sexual phenotype and prezygotic fertility in natural populations of Fucus spiralis, F. vesiculosus (Fucaceae, Phaeophyceae) and their putative hybrids, European Journal of Phycology, 40, 4, 397-407, 2005.por
dc.identifier.doihttp://dx.doi.org/ 10.1080/09670260500334354
dc.identifier.issn0967-0262
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4156
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherBritish Phycological Societypor
dc.relation.publisherversionhttp://www.tandfonline.com/doi/abs/10.1080/09670260500334354#.U429uXJdWxopor
dc.subjectDioecypor
dc.subjectFucoid seaweedpor
dc.subjectHermaphroditismpor
dc.subjectHybridizationpor
dc.subjectMale and female functionpor
dc.subjectMating system evolutionpor
dc.subjectSexual allocationpor
dc.subjectSperm/egg ratiopor
dc.titleAnalysis of sexual phenotype and prezygotic fertility in natural populations of Fucus spiralis, F. vesiculosus (Fucaceae, Phaeophyceae) and their putative hybridspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage407por
oaire.citation.issue4por
oaire.citation.startPage397por
oaire.citation.titleEuropean Journal of Phycologypor
oaire.citation.volume40por
person.familyNameSerrao
person.familyNamePearson
person.givenNameEster A.
person.givenNameGareth Anthony
person.identifierC-6686-2012
person.identifier113536
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.ciencia-id3315-9919-1A52
person.identifier.orcid0000-0003-1316-658X
person.identifier.orcid0000-0002-0768-464X
person.identifier.ridJ-3911-2013
person.identifier.scopus-author-id7004093604
person.identifier.scopus-author-id55916875600
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication0a10c448-c7f5-4c3b-9488-3917c707e35e
relation.isAuthorOfPublication.latestForDiscovery0a10c448-c7f5-4c3b-9488-3917c707e35e

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Analysis of sexual phenotype and prezygotic fertility in natural populations of Fucus spiralis, F. vesiculosus (Fucaceae, Phaeophyceae) and their putative hybrids.pdf
Size:
147.98 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.61 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)