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GENETIC DIVERSITY OF PIONEER POPULATIONS: THE CASE OF NASSAUVIA ARGENTEA (ASTERACEAE: MUTISIEAE) ON VOLCAN LONQUIMAY, CHILE

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dc.creatorSUSANA GÓMEZ GONZÁLEZ
dc.date2012
dc.date.accessioned2025-01-10T14:40:43Z
dc.date.available2025-01-10T14:40:43Z
dc.date.issued2012
dc.description.abstractCOLONISING POPULATIONS DO NOT ALWAYS EXHIBIT FOUNDER EFFECTS. COMMON EXPLANATIONS ARE HIGH LEVELS OF IMMIGRATION AND/OR REPRODUCTION, BUT FEW EMPIRICAL TESTS HAVE BEEN DONE. WE MEASURED GENETIC DIVERSITY OF NASSAUVIA ARGENTEA IN TERMS OF VARIATION AND DIVERGENCE OF PLANT POPULATIONS THAT HAVE COLONISED VOLCÁN LONQUIMAY, CHILE, FOLLOWING ITS LATEST ERUPTION IN 1988. FIFTEEN INDIVIDUALS FROM EACH OF TEN POPULATIONS WERE ANALYSED USING AMPLIFIED FRAGMENT LENGTH POLYMORPHISM (AFLP) MARKERS. GENETIC VARIATION AND DIVERGENCE WERE LOWER IN COLONISING POPULATIONS THAN ESTABLISHED ONES, BUT NOT SIGNIFICANTLY SO (ANOVA AND KRUSKAL-WALLIS TESTS, P < 0.05). NO CONSISTENT OR SIGNIFICANT TRENDS WERE OBTAINED FROM REGRESSIONS WITH DEMOGRAPHIC VARIABLES. BAYESIAN ANALYSIS OF POPULATION STRUCTURE REVEALS CLOSE RELATEDNESS AMONG POPULATIONS OF ALL AGES ON THE VOLCANO. WE CONCLUDED THAT NO CONSPICUOUS FOUNDER EFFECT HAS OCCURRED IN THE GENETIC DIVERSITY OF POPULATIONS COLONISING A NEWLY DERIVED VOLCANIC ENVIRONMENT. AN IMPORTANT IMPLICATION OF THIS IS THE ROLE OF PROXIMITY TO SOURCE REGIONS AND SPECIES VIGOUR IN MOULDING GENETIC DIVERSITY OF COLONISERS FROM DIFFERENT SPECIES.
dc.formatapplication/pdf
dc.identifier.doi10.1007/s00606-011-0527-y
dc.identifier.issn1615-6110
dc.identifier.issn0378-2697
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/8484
dc.languagespa
dc.publisherPLANT SYSTEMATICS AND EVOLUTION
dc.relation.uri10.1007/s00606-011-0527-y
dc.rightsPUBLICADA
dc.titleGENETIC DIVERSITY OF PIONEER POPULATIONS: THE CASE OF NASSAUVIA ARGENTEA (ASTERACEAE: MUTISIEAE) ON VOLCAN LONQUIMAY, CHILE
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
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