Web of Science: 6 citations, Scopus: 6 citations, Google Scholar: citations
The invasion of Senecio pterophorus across continents : multiple, independent introductions, admixture and hybridization
Vilatersana, Roser
Sanz, Maria (Universitat Autònoma de Barcelona. Departament de Farmacologia, Terapèutica i Toxicologia)
Galian, Almudena
Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, Terapèutica i Toxicologia)

Date: 2016
Abstract: Senecio pterophorus (Compositae) is a perennial shrub native to eastern South Africa that was introduced into the Western Cape in South Africa and Australia approximately 100 years ago and into Europe (Italy and Spain) more than 25-30 years ago. In this study, the aims were to unravel the putative sources of the introduced populations and identify the changes in genetic diversity after invasion using molecular markers and phylogeographic and population genetic analyses. We sampled the entire area of distribution for S. pterophorus extensively. Based on the results, three lineages were established along a latitudinal and climatic gradient in the native range (south, central, central/north) with high levels of admixture. Multiple, independent introductions occurred in the four invaded ranges. The central/northern lineage (humid climate) was the primary source for all of the invaded regions (with drier climates), although a secondary role was revealed for the southern lineage in the Western Cape and the central/northern lineage in Australia and Spain. The genetic diversity was slightly lower in the Spanish and Australian populations than that in the native populations. A variety of demographic and genetic processes affected the amount and structure of genetic diversity in the invaded areas, including multiple introductions and admixture (Western Cape, Australia and Spain) as well as pre-invasive hybridization (Italy). The patterns of dispersion support a hypothesis of rapid evolution of S. pterophorus after invasion in response to novel climatic conditions.
Note: Número d'acord de subvenció MICINN/GCL2008-02421/BOS
Note: Número d'acord de subvenció MICINN/GCL2011-29205
Note: Número d'acord de subvenció AGAUR/2014/SGR-514
Note: Número d'acord de subvenció AGAUR/2014/SGR-453
Rights: Tots els drets reservats.
Language: Anglès.
Document: article ; recerca ; submittedVersion
Subject: Admixture ; AFLP markers ; Genetic diversity ; Genetic structure ; Hybridization ; Invasion routes
Published in: Biological Invasions, Vol. 18, Num. 7 (2016) , p. 2045-2065, ISSN 1387-3547

DOI: 10.1007/s10530-016-1150-1


44 p, 1.1 MB

Material suplementari
15 p, 1.0 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Health sciences and biosciences > Chemical Ecology and Toxicology Lab
Articles > Research articles
Articles > Published articles

 Record created 2016-05-10, last modified 2020-02-08



   Favorit i Compartir