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Spatial dynamics of teak defoliator (Hyblaea puera Cramer) - Cochin ...

Spatial dynamics of teak defoliator (Hyblaea puera Cramer) - Cochin ...

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4.3.5. Correlation between outbreak<br />

4.4. Discussion<br />

incidence and topographic features<br />

V. Studies on the spatial distribution <strong>of</strong>outbreaks<br />

in the entire <strong>teak</strong> plantations at Nilambur 38<br />

5.1. Introduction 38<br />

5.2. Methods 38<br />

5.3. Results 39<br />

5.4. Discussion 42<br />

VI. Field observations on moth behaviour 69<br />

6.1. Introduction 69<br />

6.2. Methods 70<br />

6.3. Results 71<br />

6.3.1. Post-emergence behaviour 71<br />

6.3.2. Aggregation 72<br />

6.3.3. Flight behaviour and dispersal 73<br />

6.3.3.1. Movement <strong>of</strong>moths outside the plantation 73<br />

6.3.3.2. Movement <strong>of</strong>moths within the plantation 74<br />

6.3.4. Oviposition 75<br />

6.4. Discussion 75<br />

VII. Development <strong>of</strong>outbreak monitoring methods 78<br />

7.1. Introduction 78<br />

7.2. Methods 79<br />

7.3. Results 81<br />

7.4. Discussion 85<br />

30<br />

35

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