Multiple dispersal vectors drive range expansion in an invasive marine species

@article{Richardson2016MultipleDV,
  title={Multiple dispersal vectors drive range expansion in an invasive marine species},
  author={Mark F. Richardson and Craig D. H. Sherman and Randall S. Lee and Nathan J. Bott and Alastair Hirst},
  journal={Molecular Ecology},
  year={2016},
  volume={25}
}
The establishment and subsequent spread of invasive species is widely recognized as one of the most threatening processes contributing to global biodiversity loss. This is especially true for marine and estuarine ecosystems, which have experienced significant increases in the number of invasive species with the increase in global maritime trade. Understanding the rate and mechanisms of range expansion is therefore of significant interest to ecologists and conservation managers alike. Using a… 
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Analysis of mitochondrial cytochrome oxidase I sequence data and data for 1598 single-nucleotide polymorphisms generated through restriction enzyme-associated DNA sequencing indicates that multiple human-mediated dispersal events may be as important as oceanographic and life history considerations during the colonization phases of a marine invasion.
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The results provide evidence that human-mediated multiple introductions occurred in the Pearl River basin and Anthropogenic activities such as commercial transportation were likely responsible for the long-distance dispersal of P. clarkii.
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A review of how novel genomic tools provide unprecedented opportunities to characterise the role of adaptive variation, physiological tolerance, and epigenetic processes in determining the success of marine invaders highlights how future studies can be designed to integrate ecological and evolutionary information.
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It is suggested that neutral and selective processes contribute to cline dynamics, and how selection, hybridization, and dispersal can collectively influence invasion success is highlighted.
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This study demonstrates that qPCR for genetic identification and quantification of larvae can assist to elucidate life history parameters of nuisance species difficult to obtain with other tools.
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It is suggested that limiting passive transport of faucet snails is vital to minimizing their spread to remote wetlands where the snails may thrive once established, and that the species can thrive in a range of environmental conditions.
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