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Journal article
Insect invasion success depends on taxon and trophic group
NeoBiota, Vol.99, pp.19-43
2025
Abstract
The majority of non-native animal species globally are insects, though some insect species are more successful invaders than others. These differences can be attributed, in part, to differences among dominant trophic groups. Previous analyses indicate that insect herbivores are generally over-represented among non-native species while other groups, such as predators, are under-represented. Here we explore how invasion success varies among insect taxa and trophic groups. We quantify over-representation in species grouped by taxon (order or family) and larval trophic group (herbivore, detritivore, predator, parasite, brood carer); over- and under-representation is computed by comparing proportional representation of groups among non-native species in 12 world regions with total numbers in these same groups globally. Although herbivores are generally the most successful group among non-natives, we found their invasion success to vary among their taxonomic groups: herbivores are over-represented among Hemiptera, Diptera, Thysanoptera and Hymenoptera, but under-represented among Lepidoptera and Orthoptera ; similar patterns are seen at the family-level within orders. Even after accounting for trophic group, some orders were still over-represented. Within trophic groups, this pattern appeared strongest for herbivores, where predominantly parthenogenetic families belonging to the Hemiptera and Thysanoptera were over-represented in non-native assemblages, while families in the Lepidoptera and Polyneoptera were under-represented. Over time (1850s to 2000s), fractions of non-native species numbers in certain orders and trophic groups have varied, such as among parasites, where a considerable turnover took place from mostly bird-lice (Psocodea) in the 19th century to parasitic wasps (Hymenoptera) in the 20th century. It is thus likely that factors other than trophic group, such as associations with invasion pathways (e.g., plants, wood packaging), cause the observed differences in the over-representation of families belonging to different orders.
Details
- Title
- Insect invasion success depends on taxon and trophic group
- Authors
- Richard Mally (Corresponding Author) - Czech University of Life Sciences PragueRebecca Turner - ScionHelen Nahrung - University of the Sunshine Coast, Queensland, Forest Industries Research CentreTakehiko Yamanaka - National Agriculture and Food Research OrganizationGyda Fenn-Moltu - University of LausanneCleo Bertelsmeier - University of LausanneAlain Roques - Institut National de Recherche pour l'Agriculture, l'Alimentation et l'EnvironnementEckehard Brockerhoff - Swiss Federal Institute for Forest, Snow and Landscape ResearchDeepa Pureswaran - AFC-CAndrew Liebhold - Czech University of Life Sciences Prague
- Publication details
- NeoBiota, Vol.99, pp.19-43
- Publisher
- Pensoft Publishers
- Date published
- 2025
- DOI
- 10.3897/neobiota.99.151227
- ISSN
- 1314-2488; 1619-0033
- Copyright note
- © 2025 Richard Mally, Rebecca M. Turner, Helen F. Nahrung, Takehiko Yamanaka, Gyda Fenn-Moltu, Cleo Bertelsmeier, Alain Roques, Eckehard G. Brockerhoff, Deepa S. Pureswaran, Andrew M. Liebhold. This is an open access article distributed under the terms of the CC0 Public Domain Dedication.
- Data Availability
- All of the data that support the findings of this study are available in the main text or Supplementary Information.
- Grant note
- This work was supported by grant EVA4.0 (grant number CZ.02.1.01/0.0/0.0/16_019/0000803) financed by OP RDE, the National Socio-Environmental Synthesis Center (SESYNC) under funding received from the National Science Foundation (grant number DBI-1639145) and from the USDA Forest Service International Programs (grant number 21-IG-11132762-241). GFM and CB were supported by the SEFRI-funded ERC grant SPREAD (grant number MB22.00086). Funded by the European Union.
- Organisation Unit
- Forest Industries Research Centre
- Language
- English
- Record Identifier
- 991130805602621
- Output Type
- Journal article
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