New Zealand Journal of
Agricultural Research abstracts
The impact of invasive
invertebrate pests in pastoral agriculture: a review
S. L. Goldson
AgResearch Ltd
P.O. Box 60
Lincoln
Canterbury, New Zealand
and
National Centre for Advanced
Bioprotection Technologies
Lincoln University
Canterbury, New Zealand
J. S. Rowarth*
Unitec
Private Bag 92 025
Auckland, New Zealand
J. R. Caradus†
Dexcel
Private Bag 3221
Hamilton, New Zealand
*Author for correspondence.
Present addresses: Office for Environmental Programs, The University of
Melbourne, Vic 3010, Australia and National Centre for Advanced
Bioprotection Technologies, Lincoln University, Canterbury, New Zealand.
†Present address: Fonterra Cooperative Ltd, P.O. Box
20261, Te Rapa, Hamilton,
New Zealand.
Abstract Non-indigenous,
invasive invertebrate pests have a detrimental effect on the New
Zealand economy through impacts on pasture and forage production.
Estimates of the economic impact have varied from $800 million
to $2 billion. This paper reviews the literature on plant biosecurity
concerns in New Zealand, and examines five of the major invasive pests
in pastoral agriculture: clover root weevil (Sitona
lepidus Gyllenhal), Argentine
stem weevil (Listronotus
bonariensis Kuschel), lucerne
weevil (Sitona discoideus Gyllenhal),
and the lucerne aphids (Acyrthosiphon
kondoi Shinji and Macrosiphum
pisi Shinji). The difficulties
in assessing risk impact, and the limited value of extrapolation from
results from other countries are discussed, as is the potential for
using computer models in assessing potential impact. Recommendations
for research approaches for the future are made.
Keywords Sitona
lepidus;
Listronotus bonariensis;
Sitona
discoideus; Acyrthosiphon
kondoi; Macrosiphum
pisi;
container; risk impact
A04086; Received 20 September
2004; accepted 6 July 2005; Online publication date 13 September 2005
New Zealand Journal of
Agricultural Research, 2005, Vol. 48:
401–415
0028–8233/05/4804–0401 © The Royal Society of New
Zealand 2005
PDF file of entire paper: Print-quality
(310K) | screen-quality
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