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Published VersionCC BY-NC-ND V4.0, Open Access
Journal article
Historical plant introductions predict current insect invasions
Proceedings of the National Academy of Sciences of the United States of America, Vol.120(24), pp.1-7
2023
PMID: 37276425
Abstract
Thousands of insect species have been introduced outside of their native ranges, and some of them strongly impact ecosystems and human societies. Because a large fraction of insects feed on or are associated with plants, nonnative plants provide habitat and resources for invading insects, thereby facilitating their establishment. Furthermore, plant imports represent one of the main pathways for accidental nonnative insect introductions. Here, we tested the hypothesis that plant invasions precede and promote insect invasions. We found that geographical variation in current nonnative insect flows was best explained by nonnative plant flows dating back to 1900 rather than by more recent plant flows. Interestingly, nonnative plant flows were a better predictor of insect invasions than potentially confounding socioeconomic variables. Based on the observed time lag between plant and insect invasions, we estimated that the global insect invasion debt consists of 3,442 region-level introductions, representing a potential increase of 35% of insect invasions. This debt was most important in the Afrotropics, the Neotropics, and Indomalaya, where we expect a 10 to 20-fold increase in discoveries of new nonnative insect species. Overall, our results highlight the strong link between plant and insect invasions and show that limiting the spread of nonnative plants might be key to preventing future invasions of both plants and insects.
Details
- Title
- Historical plant introductions predict current insect invasions
- Authors
- Aymeric Bonnamour (Corresponding Author) - University of LausanneRachael E Blake (Author) - Intertidal Agency (United States)Andrew M Liebhold (Author) - US Forest ServiceHelen Nahrung (Author) - University of the Sunshine Coast, Queensland, Forest Industries Research CentreAlain Roques (Author) - Institut National de Recherche pour l'Agriculture, l'Alimentation et l'EnvironnementRebecca M Turner (Author) - ScionTakehiko Yamanaka (Author) - National Agriculture and Food Research OrganizationCleo Bertelsmeier (Corresponding Author) - University of Lausanne
- Publication details
- Proceedings of the National Academy of Sciences of the United States of America, Vol.120(24), pp.1-7
- Publisher
- National Academy of Sciences
- Date published
- 2023
- DOI
- 10.1073/pnas.2221826120
- ISSN
- 1091-6490; 0027-8424
- PMID
- 37276425
- Grant note
- This work was supported by the Swiss canton Vaud, the Swiss NSF (SNSF grant 310030_192619), and the Fondation Sandoz-Monique de Meuron pour la relève universitaire. Additional support was from Grant EVA4.0, No. CZ.02.1.01/0.0/0.0/16_019/0000803 financed by Czech Operational Programme Science, Research and Education, and Grant 21-IG-11132762-241 financed by US Forest Service International Programs.
- Organisation Unit
- Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99734298702621
- Output Type
- Journal article
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