Hydrogen isotopes as a sentinel of biological invasion by the Japanese beetle, popillia japonica (Newman)

Bruce A Hungate, Diana N. Kearns, Kiona Ogle, Melanie Caron, Jane C Marks, Helmuth W. Rogg

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Invasive species alter ecosystems, threaten native and endangered species, and have negative economic impacts. Knowing where invading individuals are from and when they arrive to a new site can guide management. Here, we evaluated how well the stable hydrogen isotope composition (δ2H) records the recent origin and time since arrival of specimens of the invasive Japanese beetle (Popillia japonica Newman) captured near the Portland International Airport (Oregon, U.S.A.). The δ2H of Japanese beetle specimens collected from sites across the contiguous U.S.A. reflected the δ2H of local precipitation, a relationship similar to that documented for other organisms, and one confirming the utility of δ2H as a geographic fingerprint. Within weeks after experimental relocation to a new isotopic environment, the δ2H of beetles changed linearly with time, demonstrating the potential for δ2H to also mark the timing of arrival to a new location. We used a hierarchical Bayesian model to estimate the recent geographical origin and timing of arrival of each specimen based on its δ2H value. The geographic resolution was broad, with values consistent with multiple regions of origin in the eastern U.S.A., slightly favoring the southeastern U.S.A. as the more likely source. Beetles trapped from 2007-2010 had arrived 30 or more days prior to trapping, whereas the median time since arrival declined to 3-7 days for beetles trapped from 2012- 2014. This reduction in the time between arrival and trapping at the Portland International Airport supports the efficacy of trapping and spraying to prevent establishment. More generally, our analysis shows how stable isotopes can serve as sentinels of biological invasions, verifying the efficacy of control measures, or, alternatively, indicating when those measures show signs of failure.

Original languageEnglish (US)
Article number0149599
JournalPLoS One
Volume11
Issue number3
DOIs
StatePublished - Mar 1 2016

Fingerprint

Popillia japonica
Beetles
Airports
Isotopes
hydrogen
Hydrogen
isotopes
trapping
airports
Relocation
Spraying
Coleoptera
Ecosystems
Economics
Introduced Species
economic impact
Endangered Species
Chemical analysis
endangered species
invasive species

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Hydrogen isotopes as a sentinel of biological invasion by the Japanese beetle, popillia japonica (Newman). / Hungate, Bruce A; Kearns, Diana N.; Ogle, Kiona; Caron, Melanie; Marks, Jane C; Rogg, Helmuth W.

In: PLoS One, Vol. 11, No. 3, 0149599, 01.03.2016.

Research output: Contribution to journalArticle

Hungate, Bruce A ; Kearns, Diana N. ; Ogle, Kiona ; Caron, Melanie ; Marks, Jane C ; Rogg, Helmuth W. / Hydrogen isotopes as a sentinel of biological invasion by the Japanese beetle, popillia japonica (Newman). In: PLoS One. 2016 ; Vol. 11, No. 3.
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