Border interceptions of forest insects established in Australia: intercepted invaders travel early and often

Helen F. Nahrung; Angus J. Carnegie

doi:10.3897/neobiota.64.60424

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Border interceptions of forest insects established in Australia: intercepted invaders travel early and often

Journal article

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Border interceptions of forest insects established in Australia: intercepted invaders travel early and often

Helen F. Nahrung and Angus J. Carnegie

NeoBiota, Vol.64, pp.69-86

21/01/2021

DOI: https://doi.org/10.3897/neobiota.64.60424

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Abstract

Biosecurity

exotic

nonindigenous species

non-native

quarantine

Invasive forest insects continue to accumulate in Australia (and worldwide) and cause significant impacts through costs of prevention, eradication and management, and through productivity losses and environmental and biodiversity decline. We used our recent non-native Australian forest insect species inventory to analyse border interception rates (2003-2016) of established species, and link interception frequencies with biological traits, historical establishment patterns, commodities and countries of origin. The strongest predictor of interception frequency was year of establishment. Polyphagous species were more likely to be intercepted, as were more concealed species, although this latter likely reflects the higher interceptions of bostrichid borers and other wood-boring Coleoptera relative to other taxa. Interceptions occurred more often for species native to Asia; in contrast, interceptions from other regions were more likely to be of species invasive there. While interception frequencies did not provide a good overall indicator of contemporaneous species establishments, wood and bark borers were more closely linked for establishments and interceptions. The first fifty forest insect species to establish comprised 85% of all border interceptions of established species between 2003 and 2016, while the most-recent fifty species represented just 6% of interceptions. We suggest that early-establishing species are among the "super-invaders" that continue to move globally, while more recent invasive species may be exploiting new trade pathways, new commodity associations, or changes in dynamics in their countries of origin.

Details

Title: Border interceptions of forest insects established in Australia: intercepted invaders travel early and often
Creators: Helen F. Nahrung - University of the Sunshine Coast
Angus J. Carnegie - NSW Department of Primary Industries
Publication Details: NeoBiota, Vol.64, pp.69-86
Publisher: Pensoft Publishers
Number of pages: 18
Grant note: National Sirex Coordination Committee HQPlantations Pty Ltd. Forestry Corporation of NSW Plant Health Australia Forest and Wood Products Australia Department of Agriculture and Fisheries Advance Queensland Industry Fellowship through the Queensland Department of Innovation and Tourism Industry Development - University of the Sunshine Coast
Identifiers: 991013176790602368
Academic Unit: Faculty of Science and Engineering
Language: English
Resource Type: Journal article

Border interceptions of forest insects established in Australia: intercepted invaders travel early and often

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UN Sustainable Development Goals (SDGs)

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