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Philosophical Transactions of the Royal Society B: Biological Sciences
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Biological control and sustainable food production

J.S Bale

J.S Bale

School of Biosciences, University of BirminghamEdgbaston, Birmingham B15 2TT, UK

[email protected]

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J.C van Lenteren

J.C van Lenteren

Laboratory of Entomology, Wageningen UniversityPO Box 8031, 6700 EH Wageningen, The Netherlands

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F Bigler

F Bigler

Agroscope FAL, Swiss Federal Research Station for Agroecology and AgricultureReckenholzstrasse 191, 8046 Zurich, Switzerland

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Published:06 September 2007https://doi.org/10.1098/rstb.2007.2182

    Abstract

    The use of biological control for the management of pest insects pre-dates the modern pesticide era. The first major successes in biological control occurred with exotic pests controlled by natural enemy species collected from the country or area of origin of the pest (classical control). Augmentative control has been successfully applied against a range of open-field and greenhouse pests, and conservation biological control schemes have been developed with indigenous predators and parasitoids. The cost–benefit ratio for classical biological control is highly favourable (1 : 250) and for augmentative control is similar to that of insecticides (1 : 2–1 : 5), with much lower development costs. Over the past 120 years, more than 5000 introductions of approximately 2000 non-native control agents have been made against arthropod pests in 196 countries or islands with remarkably few environmental problems. Biological control is a key component of a ‘systems approach’ to integrated pest management, to counteract insecticide-resistant pests, withdrawal of chemicals and minimize the usage of pesticides. Current studies indicate that genetically modified insect-resistant Bt crops may have no adverse effects on the activity or function of predators or parasitoids used in biological control. The introduction of rational approaches for the environmental risk assessment of non-native control agents is an essential step in the wider application of biological control, but future success is strongly dependent on a greater level of investment in research and development by governments and related organizations that are committed to a reduced reliance on chemical control.

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