Deciphering the Routes of invasion of Drosophila suzukii by Means of ABC Random Forest.
Antoine Fraimout,Vincent Debat,Simon Fellous,Ruth A. Hufbauer,Ruth A. Hufbauer,Julien Foucaud,Pierre Pudlo,Jean-Michel Marin,Donald K. Price,Julien Cattel,Xiao Chen,Maríndia Deprá,Pierre François Duyck,Christelle Guédot,Marc Kenis,Masahito T. Kimura,Gregory M. Loeb,Anne Loiseau,Isabel Martinez-Sañudo,Marta Pascual,Maxi Polihronakis Richmond,Peter W. Shearer,Nadia D. Singh,Koichiro Tamura,Anne Xuéreb,Jinping Zhang,Arnaud Estoup +26 more
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TLDR
It is found that Japan emerges as the most probable source of the earliest recorded invasion into Hawaii, and a new, more efficient, ABC method, ABC random forest (ABC-RF) is used, which out-performs ABC-LDA when using a comparable and more manageable number of simulated datasets.Abstract:
Deciphering invasion routes from molecular data is crucial to understanding biological invasions, including identifying bottlenecks in population size and admixture among distinct populations. Here, we unravel the invasion routes of the invasive pest Drosophila suzukii using a multi-locus microsatellite dataset (25 loci on 23 worldwide sampling locations). To do this, we use approximate Bayesian computation (ABC), which has improved the reconstruction of invasion routes, but can be computationally expensive. We use our study to illustrate the use of a new, more efficient, ABC method, ABC random forest (ABC-RF) and compare it to a standard ABC method (ABC-LDA). We find that Japan emerges as the most probable source of the earliest recorded invasion into Hawaii. Southeast China and Hawaii together are the most probable sources of populations in western North America, which then in turn served as sources for those in eastern North America. European populations are genetically more homogeneous than North American populations, and their most probable source is northeast China, with evidence of limited gene flow from the eastern US as well. All introduced populations passed through bottlenecks, and analyses reveal five distinct admixture events. These findings can inform hypotheses concerning how this species evolved between different and independent source and invasive populations. Methodological comparisons indicate that ABC-RF and ABC-LDA show concordant results if ABC-LDA is based on a large number of simulated datasets but that ABC-RF out-performs ABC-LDA when using a comparable and more manageable number of simulated datasets, especially when analyzing complex introduction scenarios.read more
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Evolution of Multiple Sensory Systems Drives Novel Egg-Laying Behavior in the Fruit Pest Drosophila suzukii.
Marianthi Karageorgi,Lasse B. Bräcker,Sébastien Lebreton,Caroline Minervino,Matthieu Cavey,K.P. Siju,Ilona C. Grunwald Kadow,Nicolas Gompel,Benjamin Prud'homme +8 more
TL;DR: The results establish that changes in mechanosensation, olfaction, and presumably gustation have contributed to this ecological shift, and support a model in which the emergence of D. suzukii as an agricultural pest is the consequence of the progressive modification of several sensory systems.
Journal ArticleDOI
Multiple introductions, admixture and bridgehead invasion characterize the introduction history of Ambrosia artemisiifolia in Europe and Australia.
Lotte A. van Boheemen,Eric Lombaert,Eric Lombaert,Eric Lombaert,Kristin A. Nurkowski,Bertrand Gauffre,Bertrand Gauffre,Bertrand Gauffre,Loren H. Rieseberg,Kathryn A. Hodgins +9 more
TL;DR: The historical admixture zone within native North America originated before global invasion of this weed and could act as a potential source of introduced populations, providing evidence supporting the hypothesis that the invasive populations established through multiple introductions from the native range into Europe and subsequent bridgehead invasion into Australia.
Journal ArticleDOI
Extraordinarily rapid speciation in a marine fish
Paolo Momigliano,Henri Jokinen,Antoine Fraimout,Ann-Britt Florin,Alf Norkko,Alf Norkko,Juha Merilä +6 more
TL;DR: Evidence is presented that European flounders in the Baltic Sea exhibiting different breeding behaviors are a species pair arising from a recent event of ecological speciation, the most rapid event of speciation ever reported for any marine vertebrate.
Journal ArticleDOI
Sterile insect technique and Wolbachia symbiosis as potential tools for the control of the invasive species Drosophila suzukii
Katerina Nikolouli,Katerina Nikolouli,Hervé Colinet,David Renault,David Renault,Thomas Enriquez,Laurence Mouton,Patricia Gibert,Fabiana Sassù,Fabiana Sassù,Carlos Cáceres,Christian Stauffer,Rui Pereira,Kostas Bourtzis +13 more
TL;DR: This review summarizes the current information about the biology and dispersal of D. suzukii and suggests a promising alternative avenue through the combination of these two techniques, SIT/IIT, which has been developed and is currently being tested in open-field trials against Aedes mosquito populations.
Journal ArticleDOI
A practical introduction to Random Forest for genetic association studies in ecology and evolution.
TL;DR: This work explores the use of Random Forest, a powerful machine‐learning algorithm, in genomic studies to discern loci underlying both discrete and quantitative traits, particularly when studying wild or nonmodel organisms.
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