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Marine invasions enter the genomic era： three lessons from the past, and the way forward

Current Zoology 2016年第6期62卷 629-642页

作者： frederique viard Patrice DAVID John A. DARLING Sorbonne Universites UPMC Univ Paris 06 CNRS UMR 7144 Lab. Adaptation Et Diversite En Milieu Marin Team Div&Co Station Biologique De Roscoff Roscoff 29682 France CEFE UMR 5175 CNRS-Universite De Montpellier- UM III-EPFIE 1919 Route De Mende Montpellier Cedex 34293 France National Exposure Research Laboratory United States Environmental Protection Agency Research Triangle Park NC 27711 USA

The expanding scale and increasing rate of marine biological invasions have been documented since the early 20th century. Besides their global ecological and economic impacts, non-indigenous species (NIS) also have attracted much attention as opportunities to explore important eco-evolutionary processes such as rapid adaptation, long-distance dispersal and range expansion, and secondary contacts between divergent evolutionary lineages. In this context, genetic tools have been extensively used in the past 20 years. Three important issues appear to have emerged from such studies. First, the study of NIS has revealed unexpected cryptic diversity in what had previously been assumed homogeneous entities. Second, there has been surprisingly little evidence of strong founder events accompanying marine introductions, a pattern possibly driven by large propagule loads. Third, the evolutionary processes leading to successful invasion have been difficult to ascertain due to faint genetic signals. Here we explore the potential of novel tools associated with high-throughput sequencing (HTS) to address these still pressing issues. Dramatic increase in the number of loci accessible via HTS has the potential to radically increase the power of analyses aimed at species delineation, exploring the population genomic consequences of range expansions, and examining evolutionary processes such as admixture, introgression, and adaptation. Nevertheless, the value of this new wealth of genomic data will ultimately depend on the ability to couple it with expanded "traditional" efforts, including exhaustive sampling of marine populations over large geographic scales, integrated taxonomic analyses, and population level exploration of quantitative trait differentiation through common-garden and other laboratory experiments.

关键词：生物入侵基因组海洋进化过程道路遗传工具全球生态种类划分

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