Import volumes and biosecurity interventions shape the arrival rate of fungal pathogens

Benjamin A. Sikes, Jennifer L. Bufford, Philip E. Hulme, Jerry A. Cooper, Peter R. Johnston, Richard P. Duncan

    Research output: Contribution to journalArticle

    7 Citations (Scopus)
    8 Downloads (Pure)

    Abstract

    Global trade and the movement of people accelerate biological invasions by spreading species worldwide. Biosecurity measures seek to allow trade and passenger movements while preventing incursions that could lead to the establishment of unwanted pests, pathogens, and weeds. However, few data exist to evaluate whether changes in trade volumes, passenger arrivals, and biosecurity measures have altered rates of establishment of nonnative species over time. This is particularly true for pathogens, which pose significant risks to animal and plant health and are consequently a major focus of biosecurity efforts but are difficult to detect. Here, we use a database of all known plant pathogen associations recorded in New Zealand to estimate the rate at which new fungal pathogens arrived and established on 131 economically important plant species over the last 133 years. We show that the annual arrival rate of new fungal pathogens increased from 1880 to about 1980 in parallel with increasing import trade volume but subsequently stabilised despite continued rapid growth in import trade and recent rapid increases in international passenger arrivals. Nevertheless, while pathogen arrival rates for crop and pasture species have declined in recent decades, arrival rates have increased for forestry and fruit tree species. These contrasting trends between production sectors reflect differences in biosecurity effort and suggest that targeted biosecurity can slow pathogen arrival and establishment despite increasing trade and international movement of people.

    Original languageEnglish
    Article numbere2006025
    Number of pages16
    JournalPLoS Biology
    Volume16
    Issue number5
    DOIs
    Publication statusPublished - 31 May 2018

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    biosecurity
    Pathogens
    imports
    pathogens
    Forestry
    New Zealand
    Fruit
    Databases
    plant health
    Health
    Growth
    fruit trees
    animal health
    plant pathogens
    Fruits
    forestry
    Crops
    weeds
    pastures
    pests

    Cite this

    Sikes, Benjamin A. ; Bufford, Jennifer L. ; Hulme, Philip E. ; Cooper, Jerry A. ; Johnston, Peter R. ; Duncan, Richard P. / Import volumes and biosecurity interventions shape the arrival rate of fungal pathogens. In: PLoS Biology. 2018 ; Vol. 16, No. 5.
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    Import volumes and biosecurity interventions shape the arrival rate of fungal pathogens. / Sikes, Benjamin A.; Bufford, Jennifer L.; Hulme, Philip E.; Cooper, Jerry A.; Johnston, Peter R.; Duncan, Richard P.

    In: PLoS Biology, Vol. 16, No. 5, e2006025, 31.05.2018.

    Research output: Contribution to journalArticle

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