European bridgehead effect in the worldwide invasion of the obscure mealybug

Correa, Margarita; Palero, Ferran; Malausa, Thibaut; Crochard, Didier; Zaviezo, Tania; Lombaert, Éric

doi:10.1007/s10530-018-1809-x

Cited by 9 publications

(6 citation statements)

References 56 publications

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“…Our ABC analysis suggests that the US mainland populations of C. formosanus likely arose from an already established invasive population in Hawaii through bridgehead rather than from an independent introduction directly from the native range. Indeed, cases of introduced populations themselves becoming the source of further introductions are being recognized more commonly [67][68][69][70][71] , including in other eusocial insects like invasive ants. For example, global phylogeographic analysis of the red imported fire ant Solenopsis invicta revealed that after its primary introduction event into the southeastern US from South America, this southeastern US population served as the source for its further spread to the rest of the world 20,72 .…”

Section: Discussionmentioning

confidence: 99%

Bridgehead effect and multiple introductions shape the global invasion history of a termite

et al. 2021

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Native to eastern Asia, the Formosan subterranean termite Coptotermes formosanus (Shiraki) is recognized as one of the 100 worst invasive pests in the world, with established populations in Japan, Hawaii and the southeastern United States. Despite its importance, the native source(s) of C. formosanus introductions and their invasive pathway out of Asia remain elusive. Using ~22,000 SNPs, we retraced the invasion history of this species through approximate Bayesian computation and assessed the consequences of the invasion on its genetic patterns and demography. We show a complex invasion history, where an initial introduction to Hawaii resulted from two distinct introduction events from eastern Asia and the Hong Kong region. The admixed Hawaiian population subsequently served as the source, through a bridgehead, for one introduction to the southeastern US. A separate introduction event from southcentral China subsequently occurred in Florida showing admixture with the first introduction. Overall, these findings further reinforce the pivotal role of bridgeheads in shaping species distributions in the Anthropocene and illustrate that the global distribution of C. formosanus has been shaped by multiple introductions out of China, which may have prevented and possibly reversed the loss of genetic diversity within its invasive range.

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Section: Discussionmentioning

confidence: 99%

Bridgehead effect and multiple introductions shape the global invasion history of a termite

et al. 2021

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“…A key consideration driving the need for internationally cooperative biosecurity strategies is the tendency of organisms to invade new regions from locations where they have already established, a phenomenon referred to as the "bridgehead effect" (Lombaert et al 2010; or "hub-andspoke" invasion topology (Carlton 1996). This phenomenon has been documented in historical global patterns of invasions for several plant and animal species (e.g., Correa et al 2019;Javal et al 2019). The term was first coined by Lombaert et al (2010), who used molecular analyses of the global spread of the harlequin ladybird beetle Harmonia axyridis and found that even though the species is native to east Asia, its invasions of Europe, Africa, South America, and western North America all originated from eastern North America (Fig.…”

Section: The Role Of the Bridgehead Effect In Managing Invasionsmentioning

confidence: 99%

Four priority areas to advance invasion science in the face of rapid environmental change

et al. 2021

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Unprecedented rates of introduction and spread of non-native species pose burgeoning challenges to biodiversity, natural resource management, regional economies, and human health. Current biosecurity efforts are failing to keep pace with globalization, revealing critical gaps in our understanding and response to invasions. Here, we identify four priority areas to advance invasion science in the face of rapid global environmental change. First, invasion science should strive to develop a more comprehensive framework for predicting how the behavior, abundance, and interspecific interactions of non-native species vary in relation to conditions in receiving environments and how these factors govern the ecological impacts of invasion. A second priority is to understand the potential synergistic effects of multiple co-occurring stressors – particularly involving climate change – on the establishment and impact of non-native species. Climate adaptation and mitigation strategies will need to consider the possible consequences of promoting non-native species, and appropriate management responses to non-native species will need to be developed. The third priority is to address the taxonomic impediment. The ability to detect and evaluate invasion risks is compromised by a growing deficit in taxonomic expertise, which cannot be adequately compensated by new molecular technologies alone. Management of biosecurity risks will become increasingly challenging unless academia, industry, and governments train and employ new personnel in taxonomy and systematics. Fourth, we recommend that internationally cooperative biosecurity strategies consider the bridgehead effects of global dispersal networks, in which organisms tend to invade new regions from locations where they have already established. Cooperation among countries to eradicate or control species established in bridgehead regions should yield greater benefit than independent attempts by individual countries to exclude these species from arriving and establishing.

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“…Therefore, in Clade B, some of the Americas populations likely arose from an already established expansive population in Philippines, Fiji, French Polynesia, or Turks and Caicos through bridgeheads rather than from an independent dispersal directly from the native range. Bridgehead dispersals of other arthropods have been found in several taxa worldwide (van Boheemen et al 2017, Javal et al 2019, Lesieur et al 2019, Correa et al 2019, Blumenfeld et al 2021). For example, the global red fire ant Solenopsis invicta was primarily expanded to the southeastern United States (US) from South America, then subsequently, this southeastern US population became the source for further expansion to the rest of the world (Ascunce et al 2011, Yang et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Global expansion of a solitary‐social tropical spitting spider shaped by multiple long‐distance dispersals

Luo

2023

Ecography

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The spitting spider Scytodes fusca is a species complex well known for its unusual hunting technique which involves spitting a venomous sticky silken substance over its prey. Previous studies supposed that S. fusca was native to Central and South America but had expanded to the tropics of almost every continent. We aimed to test the hypothesis of a Neotropical origin for this spider followed by a secondary dispersal to other regions, and to discuss how population expansion occurring in the tropics was driven. We investigated the population structure and spatiotemporal biogeography of the species complex through the culmination of 22 years of comprehensive global sampling using the mitochondrial and nuclear loci (COI, 16S, 18S, 28S, H3 and ITS2). The S. fusca species complex is divided into two clades. One clade comprises the haplotypes from Australasian regions and a haplotype from Baja Peninsula, Mexico. The other is composed of the haplotypes from all analyzed regions including Asia, Australia, the Americas and Madagascar. Populations from the Americas and Madagascar exhibit a lower genetic diversity compared with the Australasian population, and both have different population demographic histories. The initial divergence within the species complex started during the early Miocene. Diversifications of both clades occurred during the late Miocene. One haplotype was recently and widely dispersed into Southeast Asia, South Asia, Australia, the Americas and Madagascar. Our results elucidate the history of the global spread of the S. fusca species complex, suggesting a Malay Archipelago origin, two expansion routes and its multiple dispersals into the Americas. These stem from a common native source population, as well as from Australia, Fiji, French Polynesia or Turks and Caicos bridgeheads. Our data support the view that the expansion of the S. fusca species complex from Australasia to America and Madagascar was facilitated by long-distance jump dispersal events.

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European bridgehead effect in the worldwide invasion of the obscure mealybug

Cited by 9 publications

References 56 publications

Bridgehead effect and multiple introductions shape the global invasion history of a termite

Bridgehead effect and multiple introductions shape the global invasion history of a termite

Four priority areas to advance invasion science in the face of rapid environmental change

Global expansion of a solitary‐social tropical spitting spider shaped by multiple long‐distance dispersals

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