Journal of Applied Ecology (2006) 43, 858-867

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S.P. Worner and Muriel Gevrey (2006)
Modelling global insect pest species assemblages to determine risk of invasion
Journal of Applied Ecology 43 (5), 858-867
Abstract: 1. The many thousands of potential invasive species pose one of the greatest threats to global biodiversity world-wide. In this study we propose that assemblages of well-known global invasive pest species, irrespective of whether they arise by anthropogenic means, are non-random species groupings that contain hidden predictive information. Such information can assist the identification and prioritization of species that have the potential to pose an invasive threat in regions where they are not normally found.
2. Data comprising the presence and absence of 844 insect pest species recorded over 459 geographical regions world-wide were analysed using a self-organizing map (SOM), a well-known artificial neural network algorithm. The SOM analysis classified the high dimensional data into two-dimensional space such that geographical areas that had similar pest species assemblages were organized as neighbours on a map or grid.
3. The SOM analysis allowed each species to be ranked in terms of its risk of invasion in each area based on the strength of its association with the assemblage that was characteristic for each geographical region. A risk map for example species was produced to illustrate how such a map can be compared with the species' actual distribution and used with other information, such as the species' biotic characteristics and interactions with the abiotic environment, to improve pest risk assessments further.
4. Synthesis and applications. This study presents a new approach to the identification of potentially high-risk invasive pest species based on the hypothesis that global insect pest assemblages are non-random species groupings that can be subjected to traditional community analysis. A well-known data mining and knowledge discovery method for high dimensional data, SOM, was used to determine pest species assemblages for global regions. Species were ranked according to their potential for establishment based on their strength of association with the species assemblage that characterizes a particular region. Such an analysis can then be used to support additional risk assessment of potential invasive species, giving invasive species researchers, conservation managers, quarantine and biosecurity scientists a means for prioritizing species as candidates for further research.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website


Research topic(s) for pests/diseases/weeds:
quarantine treatments/regulations/aspects


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Cydia pomonella New Zealand
Acanthoscelides obtectus New Zealand
Grapholita molesta New Zealand
Lixus juncii
Scolytus rugulosus
Sitophilus zeamais
Helicoverpa armigera New Zealand
Aphis gossypii New Zealand
Myzus persicae New Zealand
Macrosiphum euphorbiae New Zealand
Plutella xylostella New Zealand
Aphis fabae
Acyrthosiphon pisum New Zealand
Spodoptera exigua
Rhopalosiphum maidis New Zealand
Sitobion avenae
Trichoplusia ni
Sitona lineatus New Zealand
Sitona discoideus New Zealand
Bemisia tabaci New Zealand
Planococcus citri
Frankliniella occidentalis New Zealand
Aphis craccivora New Zealand
Rhopalosiphum padi New Zealand
Lipaphis erysimi New Zealand
Therioaphis trifolii New Zealand
Aphis citricidus New Zealand
Nezara viridula New Zealand
Phyllocnistis citrella
Aonidiella aurantii New Zealand
Pieris brassicae
Hellula undalis New Zealand
Phthorimaea operculella New Zealand
Locusta migratoria New Zealand
Coccus hesperidum New Zealand
Ceratitis capitata
Sesamia cretica
Schizaphis graminum
Agrotis ipsilon New Zealand
Spodoptera littoralis
Cadra cautella
Ephestia elutella New Zealand
Pseudococcus longispinus New Zealand
Mythimna unipuncta
Unaspis citri
Bactrocera oleae
Metopolophium dirhodum New Zealand
Pieris rapae New Zealand
Saissetia oleae New Zealand
Drosophila melanogaster
Diaspidiotus perniciosus New Zealand
Diaspidiotus ostreaeformis New Zealand
Liriomyza trifolii
Liriomyza huidobrensis
Aleurothrixus floccosus
Thrips tabaci New Zealand
Oulema melanopa
Delia platura New Zealand
Brevicoryne brassicae New Zealand
Aphis spiraecola New Zealand
Hyperomyzus lactucae New Zealand
Aphis aurantii New Zealand
Dialeurodes citri
Daktulosphaira vitifoliae New Zealand
Aspidiotus nerii New Zealand
Pseudaulacaspis pentagona
Chrysomphalus dictyospermi
Lepidosaphes ulmi
Lepidosaphes beckii
Ceroplastes rusci
Parthenolecanium corni New Zealand
Eriosoma lanigerum New Zealand
Icerya purchasi New Zealand
Prays oleae
Agrotis segetum
Scrobipalpa ocellatella
Prays citri
Pectinophora gossypiella
Henosepilachna elaterii
Rhopalosiphum rufiabdominale New Zealand
Heliothrips haemorrhoidalis New Zealand
Chrysomphalus aonidum
Saissetia coffeae New Zealand
Antigastra catalaunalis
Agrius convolvuli New Zealand
Sminthurus viridis New Zealand
Phoracantha semipunctata New Zealand
Siphoninus phillyreae New Zealand
Cryptoblabes gnidiella New Zealand
Peridroma saucia
Parasaissetia nigra New Zealand
Parlatoria ziziphi
Hemiberlesia lataniae New Zealand
Thrips simplex New Zealand
Acantholeucania loreyi
Lampides boeticus New Zealand
Pantomorus cervinus New Zealand
Hippotion celerio New Zealand
Parthenolecanium persicae New Zealand
Gynaikothrips ficorum
Hemiberlesia rapax New Zealand
Insignorthezia insignis
Ceroplastes floridensis New Zealand
Gonipterus gibberus New Zealand
Taylorilygus pallidulus
Listroderes costirostris New Zealand
Acronicta rumicis
Hadula trifolii