USP Electronic Research Repository

Dispersal of Potato Cyst Nematodes Measured Using Historical and Spatial Statistical Analyses

Banks, N. C. and Hodda, M. and Singh, Sunil K. and Matveeva, E. M. (2012) Dispersal of Potato Cyst Nematodes Measured Using Historical and Spatial Statistical Analyses. Phytopathology, 102 (6). pp. 620-626. ISSN 0031-949X

[img] PDF - Published Version
Restricted to Repository staff only

Download (375Kb)

    Abstract

    Rates and modes of dispersal of potato cyst nematodes (PCNs) were investigated. Analysis of records from eight countries suggested that PCNs spread a mean distance of 5.3 km/year radially from the site of first detection, and spread 212 km over ≈40 years before detection. Data from four countries with more detailed histories of invasion were analyzed further, using distance from first detection, distance from previous detection, distance from nearest detection, straight line distance, and road distance. Linear distance from first detection was significantly related to the time since the first detection. Estimated rate of spread was 5.7 km/year, and did not differ statistically between countries. Time between the first detection and estimated introduction date varied between 0 and 20 years, and differed among countries. Road distances from nearest and first detection were statistically significantly related to time, and gave slightly higher estimates for rate of spread of 6.0 and 7.9 km/year, respectively. These results indicate that the original site of introduction of PCNs may act as a source for subsequent spread and that this may occur at a relatively constant rate over time regardless of whether this distance is measured by road or by a straight line. The implications of this constant radial rate of dispersal for biosecurity and pest management are discussed, along with the effects of control strategies.

    Item Type: Journal Article
    Subjects: Q Science > Q Science (General)
    S Agriculture > S Agriculture (General)
    Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences
    Depositing User: Fulori Nainoca
    Date Deposited: 17 Oct 2016 10:37
    Last Modified: 17 Oct 2016 10:37
    URI: http://repository.usp.ac.fj/id/eprint/9402
    UNSPECIFIED

    Actions (login required)

    View Item

    Document Downloads

    More statistics for this item...