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Prioritising potential guilds of specialist herbivores as biological control agents for prickly acacia through simulated herbivory

Dhileepan, K. and Lockett, C.J. and Robinson, M. and Pukallus, K. (2009) Prioritising potential guilds of specialist herbivores as biological control agents for prickly acacia through simulated herbivory. Annals of Applied Biology, 154 (1). pp. 97-105.

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Article Link(s): http://dx.doi.org/10.1111/j.1744-7348.2008.00277.x

Publisher URL: http://www3.interscience.wiley.com

Abstract

Understanding plant response to herbivory facilitates the prioritisation of guilds of specialist herbivores as biological control agents based on their potential impacts. Prickly acacia (Acacia nilotica ssp. indica) is a weed of national significance in Australia and is a target for biological control. Information on the susceptibility of prickly acacia to herbivory is limited, and there is no information available on the plant organ (i.e. leaf, shoot and root in isolation or in combination) most susceptible to herbivory. We evaluated the ability of prickly acacia seedlings, to respond to different types of simulated herbivory (defoliation, shoot damage, root damage and combinations), at varying frequencies (no herbivory, single, two and three events of herbivory) to identify the type and frequency of herbivory that will be required to reduce the growth and vigour. Defoliation and shoot damage, individually, had a significant negative impact on prickly acacia seedlings. For the defoliation to be effective, more than two defoliation events were required, whereas a single bout of shoot damage was enough to cause a significant reduction in plant vigour. A combination of defoliation + shoot damage had the greatest negative impact. The study highlights the need to prioritise specialist leaf and shoot herbivores as potential biological control agents for prickly acacia.

Item Type:Article
Corporate Creators:QPIF
Additional Information:© Association of Applied Biologists.
Keywords:Biological control; herbivory; weed.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Science > Invasive Species > Plants
Science > Statistics > Simulation modelling
Plant pests and diseases > Weeds, parasitic plants etc
Science > Invasive Species > Plants > Biological control
Deposited On:12 Jun 2009 06:04
Last Modified:05 Apr 2011 05:15

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