Tree, sex and size: Ecological determinants of male vs. female fecundity in three Fagus sylvatica stands

Autor: Jean-François Rey, Sylvie Oddou-Muratorio, Etienne K. Klein, Julie Gauzere, Aurore Bontemps
Přispěvatelé: Ecologie des Forêts Méditerranéennes (URFM), Institut National de la Recherche Agronomique (INRA), Biostatistique et Processus Spatiaux (BioSP), EXPANDTREE/2013 - SVSE 7, MeCC/ANR-13-ADAP-0006 ERA-NET BiodivERsA, TipTree/BiodivERsA2-2012-15, The study was partly funded by the EU ERA-NET BiodivERsA projects TIPTREE (BiodivERsA2-2012-15), the bilateral ANR project EXPANDTREE (2013 - SVSE 7) and the ANR project MeCC (ANR-13-ADAP-0006)., ANR-12-EBID-0003,Tiptree,Scénarios pour la dynamique de la biodiversité des forêts européennes sous changement global identifier les points de basculement micro-evolutifs(2012), ANR-13-ISV7-0003,ExpandTree,PATRONS SPATIO-TEMPORELS DE COLONISATION DANS UNE POPULATION D'ARBRES EN EXPANSION: une approche integrant génétique et génomique(2013), ANR-13-ADAP-0006,MeCC,Mécanismes de l'adaptation au Changement Climatique: comment plasticité phénotypique, micro-évolution et migration affecteront-elles la phénologie des arbres forestiers ?(2013)
Rok vydání: 2016
Předmět:
0106 biological sciences
0301 basic medicine
Gene Flow
microsatellite
Genotype
Spatially Explicit Mating Model
media_common.quotation_subject
Population
fagus sylvatica
010603 evolutionary biology
01 natural sciences
Competition (biology)
Gene flow
Trees
03 medical and health sciences
Fagus sylvatica
Genetic drift
Genetics
gender
Fagus
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
évolution des populations
Mediterranean forest
education
Beech
covariance génétique
ComputingMilieux_MISCELLANEOUS
Ecology
Evolution
Behavior and Systematics
Selection (genetic algorithm)
taux de fécondité
media_common
education.field_of_study
Vegetal Biology
biology
Ecology
15. Life on land
Fecundity
biology.organism_classification
méthode d'accouplement
030104 developmental biology
altitudinal gradient
génotype végétal
Seedlings
Seeds
déterminant écologique
Biologie végétale
altitude
Microsatellite Repeats
Zdroj: 2. Joint Congress on Evolutionary Biology (EVOLUTION 2018), Montpellier, FRA, 2018-08-18-2018-08-22
Molecular Ecology
Molecular Ecology, Wiley, 2018, 27 (15), pp.3131-3145. ⟨10.1111/mec.14770⟩
2. Joint Congress on Evolutionary Biology (EVOLUTION 2018)
2. Joint Congress on Evolutionary Biology (EVOLUTION 2018), Aug 2018, Montpellier, France. 2018
ISSN: 1365-294X
0962-1083
DOI: 10.1111/mec.14770⟩
Popis: International audience; Inter-individual variation in fecundities has major consequences on population evolutionary potential, through genetic drift and selection. Using two spatially explicit mating models that analyze the genotypes of seeds and seedlings, we investigated the variation of male and female fecundities within and among three European beech (Fagus sylvatica) stands situated along an altitudinal gradient. Female and male individual fecundity distributions were both skewed in this monoecious species, and we found a higher variance in female as compared to male fecundities. Both female and male fecundities increased with tree size and decreased with density and competition in the neighbourhood, the details of these effects suggesting sex-specific strategies to deal with the impact of limited resource on fecundity. The studied populations were functionally male-biased. Among-individual variations in functional gender were not driven by tree size but by density and competition in the neighbourhood. Femaleness decreased under limited resource availability, an expected consequence of the higher cost of female reproduction. Considering the variation of gene flow and genetic drift across elevation, our results suggest that the adaptive potential could be enhanced by low genetic drift at low elevation, and by high pollen-mediated gene flow at high elevation. Finally, this study predicts a more efficient response to selection for traits related to male versus female fitness, for a given selection intensity.
Databáze: OpenAIRE
Externí odkaz: