Population Dynamics of Native Parasitoids Associated with the Asian Chestnut Gall Wasp (Dryocosmus kuriphilus) in Italy

Table 2

Galls of Dryocosmus kuriphilus, 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
	Gall number	Parasitized galls (%)	Gall number	Parasitized galls (%)	Gall number	Parasitized galls (%)
Site A
Cultivated chestnut
2011	23	65.22	37	45.95	60	56.67	2	2.276	n.s.
2012	46	6.52	50	8.00	54	7.41	2	0.078	n.s.
2013	63	3.17	56	5.36	31	3.23	2	0.415	n.s.
Wild chestnut
2011	37	72.97	44	56.82	39	69.23	2	2.610	n.s.
2012	55	7.27	59	16.95	36	8.33	2	3.007	n.s.
2013	72	12.50	52	7.69	26	11.54	2	0.791	n.s.
Site B
Cultivated chestnut
2011	29	89.66	37	54.05	54	64.81	2	10.952	0.01
2012	40	7.50	56	5.36	54	7.41	2	0.254	n.s.
2013	46	6.52	57	1.75	47	8.51	2	2.856	n.s.
Wild chestnut
2011	26	61.54	37	54.05	57	71.93	2	3.221	n.s.
2012	77	1.30	39	5.13	34	5.88	2	2.179	n.s.
2013	70	10.00	51	3.92	29	3.45	2	2.392	n.s.

number of galls collected per each category.