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12<br />

IPM STRATEGIES THROUGH SPECIALIST AND<br />

GENERALIST PHYTOSEIIDS (ACARI,<br />

MESOSTIGMATA)<br />

SAURO SIMONI AND MARISA CASTAGNOLI<br />

Agricultural Research Council,<br />

Research Centre for Agrobiology <strong>and</strong> Pedology<br />

via di Lanciola 12/A, Cascine del Riccio,<br />

50125 Firenze, <strong>Italy</strong><br />

Abstract. The exploitation of natural enemies, especially the predaceous mites phytoseiids, has become a<br />

fundamental factor for IPM in integrated crop production in Europe <strong>and</strong> worldwide. In controlling<br />

harmful insect <strong>and</strong> mite species, various species/strains from this group of predators are commonly used<br />

<strong>and</strong> marketed. Intrinsic biological traits of phytoseiids allow their ranking in different life style types.<br />

These factors, together with their quick adaptability to face new emergencies (i.e. phytophagous <strong>and</strong><br />

exotic pests outbreaks <strong>and</strong> new environment or climatic conditions) confirm their role as a significant <strong>and</strong><br />

sustainable tool in biological control. In this chapter the foundations for a more intensive adoption of<br />

phytoseiids are underlined, including the enhancement <strong>and</strong> introduction of new strategies aiming at a long<br />

term <strong>and</strong> efficient pest control.<br />

1. INTRODUCTION<br />

The need to increase food availability hardly couples with better chances to limit<br />

plant pests in modern agriculture, <strong>and</strong> several actions aim worldwide at increasing<br />

crop production <strong>and</strong> facilitating food <strong>and</strong> commodities trade. These efforts include<br />

lengthening of the plant/crops seasonal life or strategies increasing the consistent<br />

uniformity of varieties <strong>and</strong> cultivars used which represent, in fact, useful factors for<br />

business at small time scale. However, these actions are not always suitable to<br />

prevent a multitude of pest infestations on a regional scale. Since pests are also<br />

persistently poised for plant invasion, preventive <strong>and</strong> early remedial pest<br />

management strategies <strong>and</strong> treatments are needed at regular time intervals, in almost<br />

any cropping system (Sparks, 1999; Jarvis, Mar., & Sears, 2006; Gerson &<br />

Weintraub, 2007).<br />

311<br />

A. <strong>Ciancio</strong>, K.G. Mukerji (eds.), Integrated Management of Arthropod Pests<br />

<strong>and</strong> Insect Borne Diseases, Integrated Management of Plant Pests <strong>and</strong> Diseases 5,<br />

DOI 10.1007/978-90-481-8606-8_12, © Springer Science+Business Media B.V. 2010

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