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Neither variation loss, nor change in selfing rate is associated with the worldwide invasion of [i]Physa acuta[/i] from its native North America
- Source :
- Biological Invasions, Biological Invasions, 2014, 16 (8), pp.1769-1783. ⟨10.1007/s10530-013-0626-5⟩, Biological Invasions, Springer Verlag, 2014, 16 (8), pp.1769-1783. ⟨10.1007/s10530-013-0626-5⟩, Biological Invasions 8 (16), 1769-1783. (2014)
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
Abstract
- International audience; Whether bioinvasions are associated with a loss of genetic diversity and a change in mating system is instrumental for understanding the evolutionary fate of invasive species. Little loss is expected under strong propagule pressure which might be a general situation in widespread, efficient invader. In hermaphroditic species, we have few examples of a transition between outcrossing and selfing as a consequence of invasion, though this is classically predicted (as a corollary to Baker's law). We estimated microsatellite variation in 44 populations of the widespread freshwater snail Physa acuta sampled at worldwide scale (including several populations from its native North America). Neither loss of variation (or bottleneck), nor increase in selfing rate was detected in invaded areas. Moreover there was no isolation by distance at large geographic scale, and limited geographic coherence in genetic patterns was detected using STRUCTURE software-the West Mediterranean area being an exception. Such patterns might be explained by (1) multiple introductions in the invaded areas, presumably fostered by aquarium trade, followed by regional spread in some cases-in which case mating partners might be numerous enough to prevent transition towards higher selfing rates, and (2) invasions from the whole native area. This suggests that P. acuta is an exceptionally efficient invader (which is not true of related species), but the reasons of its success remain elusive.
- Subjects :
- [SDV]Life Sciences [q-bio]
Physa acuta
Mating systems
Outcrossing
Introduced species
Invasive species
Genetic diversity
14. Life underwater
bioinvasion
accouplement
Ecology, Evolution, Behavior and Systematics
Bioinvasions
Phylogeography
Snail
escargot
Isolation by distance
Ecology
biology
Propagule pressure
phylogéographie
Selfing
Physa
biology.organism_classification
Mating system
diversité génétique
Subjects
Details
- Language :
- English
- ISSN :
- 13873547 and 15731464
- Database :
- OpenAIRE
- Journal :
- Biological Invasions, Biological Invasions, 2014, 16 (8), pp.1769-1783. ⟨10.1007/s10530-013-0626-5⟩, Biological Invasions, Springer Verlag, 2014, 16 (8), pp.1769-1783. ⟨10.1007/s10530-013-0626-5⟩, Biological Invasions 8 (16), 1769-1783. (2014)
- Accession number :
- edsair.doi.dedup.....d06fc261009054cfd110ce5bae9ee986