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Global flows of insect transport and establishment The role of biogeography, trade and regulations7.90 MB
Published VersionCC BY V4.0, Open Access
Journal article
Global flows of insect transport and establishment: The role of biogeography, trade and regulations
Diversity and Distributions, Vol.29(11), pp.1478-1491
2023
Abstract
Aim: Non-native species are part of almost every biological community worldwide, yet numbers of species establishments have an uneven global distribution. Asymmetrical exchanges of species between regions are likely influenced by a range of mechanisms, including propagule pressure, native species pools, environmental conditions and biosecurity. While the importance of different mechanisms is likely to vary among invasion stages, those occurring prior to establishment (transport and introduction) are difficult to account for. We used records of unintentional insect introductions to test (1) whether insects from some biogeographic regions are more likely to be successful invaders, (2) whether the intensity of trade flows between regions determines how many species are intercepted and how many successfully establish, and (3) whether the variables driving successful transport and successful establishment differ.
Location: Canada, mainland USA, Hawaii, Japan, Australia, New Zealand, Great Britain, South Korea, South Africa.
Methods: To disentangle processes occurring during the transport and establishment stages, we analysed border interceptions of 8199 insect species as a proxy for transported species flows, and lists of 2076 established non-native insect species in eight areas. We investigated the influence of biogeographic variables, socio-economic variables and biosecurity regulations on the size of species flows between regions.
Results: During transport, the largest species flows generally originated from the Nearctic, Panamanian and Neotropical regions. Insects native to 8 of 12 biogeographic regions were able to establish, with the largest flows of established species on average coming from the Western Palearctic, Neotropical and Australasian/Oceanian regions. Both the biogeographic region of origin and trade intensity significantly influenced the size of species flows between regions during transport and establishment. The transported species richness increased with Gross National Income in the source country, and decreased with geographic distance. More species were able to establish when introduced within their native biogeographic region.
Main Conclusions: Our results suggest that accounting for processes occurring prior to establishment is crucial for understanding invasion asymmetry in insects, and for quantifying regional biosecurity risks.
Details
- Title
- Global flows of insect transport and establishment: The role of biogeography, trade and regulations
- Authors
- Gyda Fenn-Moltu (Corresponding Author) - University of LausanneSébastien Ollier (Author) - University of LausanneOlivia K. Bates (Author) - University of LausanneAndrew M. Liebhold (Author) - US Forest ServiceHelen F. Nahrung (Author) - University of the Sunshine Coast, Queensland, Forest Industries Research CentreDeepa S. Pureswaran (Author) - Canadian Forest ServiceTakehiko Yamanaka (Author) - National Agriculture and Food Research OrganizationCleo Bertelsmeier (Author) - University of Lausanne
- Publication details
- Diversity and Distributions, Vol.29(11), pp.1478-1491
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2023
- DOI
- 10.1111/ddi.13772
- ISSN
- 1472-4642; 1366-9516
- Copyright note
- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Data Availability
- The data and code that support the findings of this study are openly available in Dryad at 10.5061/dryad.dv41ns243.
- Grant note
- DBI-1639145 / National Science Foundation 310030_192619 / Swiss National Science Foundation CZ.02.1.01/0.0/0.0/16_019/0000803 / Czech Operational Programme 'Research, Development and Education'
- Organisation Unit
- Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99971192602621
- Output Type
- Journal article
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