Show simple item record Krueger-Hadfield, Stacy A. Roze, Denis Destombe, Christophe Correa, Juan A. Valero, Myriam
dc.coverage.spatial Brittany
dc.coverage.spatial France 2014-08-13T15:09:34Z 2014-08-13T15:09:34Z 2014-09-17
dc.identifier doi:10.5061/dryad.07950
dc.identifier.citation Krueger-Hadfield SA, Roze D, Correa JA, Destombe C, Valero M (2015) O father where art thou? Paternity analyses in a natural population of the haploid-diploid seaweed Chrondrus crispus. Heredity 114(2): 85–194.
dc.description The link between life history traits and mating systems in diploid organisms has been extensively addressed in the literature, whereas the degree of selfing and/or inbreeding in natural populations of haploid–diploid organisms, in which haploid gametophytes alternate with diploid sporophytes, has been rarely measured. Dioecy has often been used as a proxy for the mating system in these organisms. Yet, dioecy does not prevent the fusion of gametes from male and female gametophytes originating from the same sporophyte. This is likely a common occurrence when spores from the same parent are dispersed in clumps and recruit together. This pattern of clumped spore dispersal has been hypothesized to explain significant heterozygote deficiency in the dioecious haploid–diploid seaweed Chondrus crispus. Fronds and cystocarps (structures in which zygotes are mitotically amplified) were sampled in two 25 m2 plots located within a high and a low intertidal zone and genotyped at 5 polymorphic microsatellite loci in order to explore the mating system directly using paternity analyses. Multiple males sired cystocarps on each female, but only one of the 423 paternal genotypes corresponded to a field-sampled gametophyte. Nevertheless, larger kinship coefficients were detected between males siring cystocarps on the same female in comparison with males in the entire population, confirming restricted spermatial and clumped spore dispersal. Such dispersal mechanisms may be a mode of reproductive assurance due to nonmotile gametes associated with putatively reduced effects of inbreeding depression because of the free-living haploid stage in C. crispus.
dc.relation.haspart doi:10.5061/dryad.07950/1
dc.relation.isreferencedby doi:10.1038/hdy.2014.82
dc.relation.isreferencedby PMID:25227258
dc.subject Seaweed
dc.subject Paternity analyses
dc.subject Intertidal Shorescape
dc.subject Kinship
dc.subject Sibship
dc.subject Marine
dc.subject Population genetics
dc.subject Mating System
dc.title Data from: O father where art thou? Paternity analyses in a natural population of the haploid-diploid seaweed Chrondrus crispus
dc.type Article
dwc.ScientificName Chondrus crispus
prism.publicationName Heredity
dryad.dansTransferDate 2018-04-19T19:18:21.968+0000
dryad.dansArchiveDate 2018-04-23T13:21:18.700+0000

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Title Female and cystocarpic genotypes
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Description An excel file with the "artificially" diploid female gametophytic genotype and the accompanying cystocarps.
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