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Table 2.--Body size of Q. purzctatella from each region on beech in that region. Weight of larvae at maturation is shown for
each sex.
Female Q. purzctatella
A B C
376.3+68.5 442.0+ 15.6 414.4+48.9
A 388 453 489
369 431 360
3 2 5
398.5+75.3 484.5+108.9 451.3_+58.8
E crenata B 576 739 554
309 333 340
17 17 22
392.9+26.3 455.0+68.5
c 451 550
351 342
34 14
Male Q. punctatella
A B C
288.3+60.5 369.7+ 15.6 336.8+41.3
A 349 384 398
228 353 298
3 3 5
294.5+63.6 384.9+36.99 335.3+45.2
E crenata B 416 469 409
204 332 254
27 16 19
353.3+31.9 396.0+-39.0
C 412 450
279 299
38 22
Mean+SD
Max
Min
N
two regional populations (p < 0.01 t-test). The influence of beech on body size was not as apparent as the population effect:
female body size of larvae reared on Site B beech was close to that of larvae reared on Site C beech, while male body size of
larvae reared on Site B beech was similar to that of those reared on Site A beech.
Leaf properties were compared among the three sites (Fig. l 1), and weight per leaf among the three was almost the
same. Leaves of Site A beech were significantly tougher than those of the other two sites, though they were much thinner
than Site C leaves and almost the same as the Site B leaves. A remarkable point is that nitrogen content was significantly
higher in leaves of Site A than in those of the other two sites (Fig. 12). Tannin content also increased greatly. Judging from
the high N content of beeches in Site A, where severe defoliation had occurred three years before our experiment, trees had
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