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Natal origin of the invasive biosecurity pest, brown marmorated stink bug (Halyomorpha halys: Penatomidae), determined by dual-element stable isotope-ratio mass spectrometry.

Authors
  • Holder, Peter W1
  • Van Hale, Robert J2
  • Frew, Russell2
  • George, Sherly3
  • Armstrong, Karen F1
  • 1 Bio-Protection Research Centre, Lincoln University, Christchurch, New Zealand. , (New Zealand)
  • 2 Department of Chemistry, University of Otago, Dunedin, New Zealand. , (New Zealand)
  • 3 Plant Health & Environment Laboratory, Ministry for Primary Industries, Auckland, New Zealand. , (New Zealand)
Type
Published Article
Journal
Pest Management Science
Publisher
Wiley (John Wiley & Sons)
Publication Date
Oct 28, 2019
Identifiers
DOI: 10.1002/ps.5659
PMID: 31659828
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Post-border detection of a single brown marmorated stink bug (BMSB) in New Zealand warranted a biosecurity response, the nature of which would be influenced by its status as part of an established population or as a new arrival. Stable isotope analysis has the potential to determine natal origins, but is difficult to achieve for samples as small as a single insect. Here an analytical modification to measure small samples was successfully trialled as a means to supply evidence as to the local or exotic natal origin of the intercepted BMSB specimen. Sufficient analytical sensitivity was achieved using a modified isotope ratio mass spectrometry method, involving thermolysis and carbon monoxide cryofocusing, to enable the simultaneous analysis of δ2 H and δ18 O from wings of the post-border BMSB sample. The values were much lower than those of the New Zealand green vegetable bug, used as a local reference. However, they fell within the range of those for BMSB of Northern Hemisphere origin intercepted at the New Zealand border over the same time period, specifically overlapping with the USA and Italy, but not China. The isotope signature of the post-border detected BMSB suggested a significantly cooler climate than the North Island of New Zealand, indicating that it was a new arrival and did not represent an established population. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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