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RESEARCH PRODUCT
Heterozygosity-fitness correlations in adult and juvenile Zenaida Dove, Zenaida aurita.
Frank CézillyChristine DubreuilKarine MonceauFrançois-xavier Dechaume-moncharmontRémi Wattiersubject
0106 biological sciencesZenaida dovesPopulation Dynamics01 natural sciencesFluctuating asymmetryLinkage DisequilibriumLoss of heterozygosityGenetics (clinical)0303 health scienceseducation.field_of_studyLikelihood FunctionsEcology[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]Age Factorsoutbreeding depressionmultilocus heterozygosity[ SDV.BID.EVO ] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]body conditionBiotechnologyZenaida auritaHeterozygoteGenotypeOutbreeding depressionPopulationForagingZoologyBarbadosBiology010603 evolutionary biology03 medical and health sciencesGeneticsJuvenileAnimals14. Life underwatereducationColumbidaeMolecular Biology030304 developmental biologyPopulation Density[ SDE.BE ] Environmental Sciences/Biodiversity and EcologyModels GeneticGenetic Variationisland populationmicrosatellite markersbiology.organism_classificationGenetics PopulationBody ConstitutionGenetic Fitness[SDE.BE]Environmental Sciences/Biodiversity and EcologyMicrosatellite Repeatsdescription
10 pages; International audience; Understanding how fitness is related to genetic variation is of crucial importance in both evolutionary ecology and conservation biology. We report a study of heterozygosity-fitness correlations in a wild, noninbred population of Zenaida Doves, Zenaida aurita, based on a sample comprising 489 individuals (382 adults and 107 juveniles) typed at 13 microsatellite loci, resulting in a data set comprising 5793 genotypes. In both adults and juveniles, and irrespective of sex, no evidence was found for an effect of either multilocus or single-locus heterozygosity on traits potentially related to fitness such as foraging tactic, competitive ability, and fluctuating asymmetry. In contrast, a significant negative correlation between body condition and multilocus heterozygosity, indicative of outbreeding depression, was found in juveniles, whereas no such trend was observed in adults. However, the frequency distribution of heterozygosity did not differ between the two age classes, suggesting compensatory growth by heterozygous juveniles. We discuss our results in relation to some practical limitations associated with studies of heterozygosity-fitness correlations, and suggest that tropical bird species with allopatric divergence between island populations may provide a good biological model for the detection of outbreeding depression.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 |