Population Dynamics of Native Parasitoids Associated with the Asian Chestnut Gall Wasp (Dryocosmus kuriphilus) in Italy
Table 4
Parasitized cells within Dryocosmus kuriphilus galls collected from cultivated and wild chestnuts in the two study sites (site A = 478 m a.s.l.; site B = 665 m a.s.l.) at Marradi (Italy) sorted by volume categories (small = 0.02–0.064 cm3; medium = 0.065–1.31 cm3; large = 1.32–15.48 cm3). Nonsignificant values are indicated by n.s.
Year
Gall volume categories
d.f.
Small
Medium
Large
Cell number
Parasitized cells (%)
Cell number
Parasitized cells (%)
Cell number
Parasitized cells (%)
Site A
Cultivated chestnuts
2011
30
66.67
75
46.67
271
30.26
2
19.131
<0.001
2012
10
30.00
24
20.83
42
14.29
2
1.383
n.s.
2013
6
50.00
12
25.00
8
12.50
2
2.447
n.s.
Wild chestnuts
2011
69
63.77
107
46.73
239
34.31
2
20.095
<0.001
2012
9
55.56
65
21.54
25
16.00
2
5.250
n.s.
2013
19
52.63
19
21.05
26
23.08
2
5.565
n.s.
Site B
Cultivated chestnuts
2011
47
85.11
87
36.78
229
29.26
2
52.286
<0.001
2012
12
25.00
19
15.79
42
9.52
2
1.833
n.s.
2013
9
44.44
3
33.33
25
24.00
2
1.295
n.s.
Wild chestnuts
2011
29
79.31
80
48.75
462
24.46
2
49.308
<0.001
2012
2
50.00
9
22.22
19
10.53
2
1.940
n.s.
2013
17
41.18
9
55.56
4
25.00
2
1.155
n.s.
Total number of cells recorded on sample galls per each category.
