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1 Anoplophora chinensis in Lombardy, Italy : an update of the ...

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Research<br />

1 29<br />

SEASONAL EMERGENCE OF ANOPLOPHORA CHINENSIS:<br />

DEVELOPMENT OF A DEGREE DAY MODEL<br />

The effectiveness <strong>of</strong> all pest m<strong>an</strong>agement strategies depend <strong>in</strong> large part upon proper tim<strong>in</strong>g<br />

<strong>of</strong> <strong>the</strong>ir implementation to co<strong>in</strong>cide with <strong>the</strong> targeted life state. For example, <strong>in</strong>secticidal<br />

control <strong>of</strong> adult beetles may co<strong>in</strong>cide with adult emergence. Moreover, <strong>the</strong> best tim<strong>in</strong>gs could<br />

be predicted by Degree‐day models.<br />

Degree‐day models, also known as phenology models are based on <strong>the</strong> fact that <strong>an</strong> <strong>in</strong>sect's<br />

growth is closely l<strong>in</strong>ked to <strong>the</strong> temperature where it is found. A specific number <strong>of</strong> heat units<br />

are required for <strong>the</strong> <strong>in</strong>sect to complete a certa<strong>in</strong> physiological process.<br />

… How to develope a DDM…<br />

Cag<strong>in</strong>g <strong>in</strong>fested stumps…<br />

Caged trees…<br />

No caged trees…<br />

In <strong>the</strong> picture: Michael T. Smith

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