Unravelling the invasion history of the Asian tiger mosquito in Europe

Sherpa, Stéphanie; Blum, Michaël G. B.; Capblancq, Thibaut; Cumer, Tristan; Rioux, Delphine; Després, Laurence

doi:10.1111/mec.15071

Cited by 89 publications

(143 citation statements)

References 78 publications

(141 reference statements)

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“…; Sherpa et al. ), this result supports an initial expansion in Southeast Asia and is congruent with the previous phylogeographic reconstruction showing that A. albopictus started to expand between the LIG and the LGM (∼70 kya) (Poretta et al. ).…”

Section: Discussionsupporting

confidence: 90%

“…; Sherpa et al. ). Here, we show that populations genetically differentiated at neutral loci (Fig. )…”

Section: Discussionmentioning

confidence: 99%

“…Raw fastq sequences, obtained from double‐digest restriction associated DNA sequencing (ddRADseq), were processed using the bioinformatics pipeline described in Sherpa et al. (). Briefly, reads were trimmed to equal length of 110 bp using BBmap version 37.33 (Bushnell ) and mapped to the A. albopictus reference genome (Chen et al.…”

Section: Methodsmentioning

confidence: 99%

“…; Sherpa et al. ) suggests that the source populations were already adapted to winter diapause and ready to become invasive in temperate regions. Furthermore, there is no clear indication for niche expansion that would have required adaptive evolution in temperate invaded areas (Cunze et al.…”

mentioning

confidence: 99%

“…We use published genetic data obtained from high‐throughput sequencing, showing that geographically isolated populations are genetically differentiated (Sherpa et al. ). We also aim to assess if the factors that shaped genetic variation within the native range of A. albopictus influenced morphological variation.…”

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confidence: 99%

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Cold adaptation in the Asian tiger mosquito's native range precedes its invasion success in temperate regions

2019

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Adaptation to environmental conditions within the native range of exotic species can condition the invasion success of these species outside their range. The striking success of the Asian tiger mosquito, Aedes albopictus, to invade temperate regions has been attributed to the winter survival of diapause eggs in cold environments. In this study, we evaluate genetic polymorphisms (SNPs) and wing morphometric variation among three biogeographical regions of the native range of A. albopictus. Reconstructed demographic histories of populations show an initial expansion in Southeast Asia and suggest that marine regression during late Pleistocene and climate warming after the last glacial period favored expansion of populations in southern and northern regions, respectively. Searching for genomic signatures of selection, we identified significantly differentiated SNPs among which several are located in or within 20 kb distance from candidate genes for cold adaptation. These genes involve cellular and metabolic processes and several of them have been shown to be differentially expressed under diapausing conditions. The three biogeographical regions also differ for wing size and shape, and wing size increases with latitude supporting Bergmann's rule. Adaptive genetic and morphometric variation observed along the climatic gradient of A. albopictus native range suggests that colonization of northern latitudes promoted adaptation to cold environments prior to its worldwide invasion.

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Section: Discussionsupporting

confidence: 90%

“…; Sherpa et al. ). Here, we show that populations genetically differentiated at neutral loci (Fig. )…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Cold adaptation in the Asian tiger mosquito's native range precedes its invasion success in temperate regions

2019

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Predicting the success of an invader: Niche shift versus niche conservatism

Sherpa

Guéguen

Renaud

et al. 2019

Ecology and Evolution

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Invasive species can encounter environments different from their source populations, which may trigger rapid adaptive changes after introduction (niche shift hypothesis). To test this hypothesis, we investigated whether postintroduction evolution is correlated with contrasting environmental conditions between the European invasive and source ranges in the Asian tiger mosquito Aedes albopictus. The comparison of environmental niches occupied in European and source population ranges revealed more than 96% overlap between invasive and source niches, supporting niche conservatism. However, we found evidence for postintroduction genetic evolution by reanalyzing a published ddRADseq genomic dataset from 90 European invasive populations using genotype–environment association (GEA) methods and generalized dissimilarity modeling (GDM). Three loci, among which a putative heat‐shock protein, exhibited significant allelic turnover along the gradient of winter precipitation that could be associated with ongoing range expansion. Wing morphometric traits weakly correlated with environmental gradients within Europe, but wing size differed between invasive and source populations located in different climatic areas. Niche similarities between source and invasive ranges might have facilitated the establishment of populations. Nonetheless, we found evidence for environmental‐induced adaptive changes after introduction. The ability to rapidly evolve observed in invasive populations (genetic shift) together with a large proportion of unfilled potential suitable areas (80%) pave the way to further spread of Ae. albopictus in Europe.

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Multiple introductions and overwintering shape the progressive invasion of Aedes albopictus beyond the Alps

Vavassori

Honnen

Saarman

et al. 2022

Ecology and Evolution

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Aedes albopictus originates from Southeast Asia and is considered one of the most invasive species globally. This mosquito is a nuisance and a disease vector of significant public health relevance. In Europe, Ae. albopictus is firmly established and widespread south of the Alps, a mountain range that forms a formidable biogeographic barrier to many organisms. Recent reports of Ae. albopictus north of the Alps raise questions of (1) the origins of its recent invasion, and (2) if this mosquito has established overwintering populations north of the Alps. To answer these questions, we analyzed population genomic data from >4000 genome‐wide SNPs obtained through double‐digest restriction site‐associated DNA sequencing. We collected SNP data from specimens from six sites in Switzerland, north and south of the Alps, and analyzed them together with specimens from other 33 European sites, five from the Americas, and five from its Asian native range. At a global level, we detected four genetic clusters with specimens from Indonesia, Brazil, and Japan as the most differentiated, whereas specimens from Europe, Hong Kong, and USA largely overlapped. Across the Alps, we detected a weak genetic structure and high levels of genetic admixture, supporting a scenario of rapid and human‐aided dispersal along transportation routes. While the genetic pattern suggests frequent re‐introductions into Switzerland from Italian sources, the recovery of a pair of full siblings in two consecutive years in Strasbourg, France, suggests the presence of an overwintering population north of the Alps. The suggestion of overwintering populations of Ae. albopictus north of the Alps and the expansion patterns identified points to an increased risk of further northward expansion and the need for increased surveillance of mosquito populations in Northern Europe.

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Unravelling the invasion history of the Asian tiger mosquito in Europe

Cited by 89 publications

References 78 publications

Cold adaptation in the Asian tiger mosquito's native range precedes its invasion success in temperate regions

Cold adaptation in the Asian tiger mosquito's native range precedes its invasion success in temperate regions

Predicting the success of an invader: Niche shift versus niche conservatism

Multiple introductions and overwintering shape the progressive invasion of Aedes albopictus beyond the Alps

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