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Table I
Characteristics of infested and uninfested acorns of Q. variabilis.
| Acorn features | Uninfested | Infested | |
|---|---|---|---|
| Length (cm) | 2.05 ± 0.19 | 2.07 ± 0.18 | |
| Width (cm) | 1.78 ± 0.16 | 1.82 ± 0.23 | |
| Fresh weight (g) | 4.47 ± 1.04 | 4.26 ± 0.98 | |
| Seed crops (acorn/m2) | 8.08 ± 6.46 | ||
| Number of larvae per acorn | 1.12 ± 0.05 | ||
| Number of exit holes per acorn | 1.06 ± 0.03 | ||
| Pre-dispersal infestation (%) | 44.86 ± 30.08 | ||
| Non-damage | Light-damage | Severe damage | |
| Relative frequency (%) | 66.30 ± 8.37 | 17.90 ± 2.13 | 15.80 ± 2.86 |
| Apex part | Middle | Base | |
| Tannin content (mg/g) | 78.29 ± 6.95 | – | 72.42 ± 8.07 |
| Pericarp thickness (mm) | 0.70 ± 0.08 | 0.50 ± 0.06 | 0.46 ± 0.08 |
| Feeding site occurrence (%) | 5.00 ± 0.80 | 48.75 ± 2.60 | 54.55 ± 4.50 |
| Exit hole occurrence (%) | 10.87 ± 0.60 | 43.48 ± 2.10 | 45.65 ± 3.20 |