Please use this identifier to cite or link to this item:
Title: Genetic diversity and population structure of the invasive alien red swamp crayfish
Authors: Yue, G.H.
Li, J.
Bai, Z.
Wang, C.M. 
Feng, F.
Keywords: Biological invasions
Freshwater crayfish
Population structure
Procambarus clarkii
Issue Date: 2010
Citation: Yue, G.H., Li, J., Bai, Z., Wang, C.M., Feng, F. (2010). Genetic diversity and population structure of the invasive alien red swamp crayfish. Biological Invasions 12 (8) : 2697-2706. ScholarBank@NUS Repository.
Abstract: High genetic diversity is thought to characterize successful invasive species, as the potential to adapt to new environments is enhanced and inbreeding is reduced. The red swamp crayfish, Procambarus clarkii, native to northeastern Mexico and south-central USA was introduced to Nanjing, China from Japan in 1929. Little is known about the genetic diversity and population structure of this species in China. We examined the genetic diversity and population structure of six P. clarkii populations using nine polymorphic microsatellites. Among the six populations, Nanjing population showed the highest allele number, allele richness and gene diversity, which is consistent with records indicating Nanjing may be the first site of introduction. In all six populations, significant heterozygote deficit was observed, suggesting founder effects and non-random mating. Analysis of bottleneck under infinite allele model, stepwise mutation model and two-phased model of mutation revealed evidence of a recent bottleneck in all these populations. Pairwise genetic distance analysis, AMOVA and assignment tests demonstrated high genetic differentiation between populations. Pairwise genetic distance did not fit the pairwise geographic distance, suggesting that human mediated dispersal have played a role in the population expansion and genetic differentiation. © 2009 Springer Science+Business Media B.V.
Source Title: Biological Invasions
ISSN: 13873547
DOI: 10.1007/s10530-009-9675-1
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jul 9, 2019


checked on Jul 9, 2019

Page view(s)

checked on Jul 12, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.