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

Table 1

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) during the three-year period. Nonsignificant values are indicated by n.s.

(a)

Year	Total galls collected	Parasitized galls (%)
		Total	Site A			Site B
			Total	Cultivated	Wild	Total	Cultivated	Wild
2011	480	63.13	30.21	13.75	16.46	32.92	16.88	16.04
2012	600	7.17	4.67	1.83	2.83	2.50	1.67	0.83
2013	600	6.67	3.67	1.00	2.67	3.00	1.33	1.67

(b) -test results

Year	Site			Management
				Site A			Site B
	d.f.			d.f.			d.f.
2011	1	1.514	n.s.	1	2.952	n.s.	1	0.296	n.s.
2012	1	4.296	n.s.	1	1.428	n.s.	1	1.787	n.s.
2013	1	0.429	n.s.	1	5.076	n.s.	1	0.237	n.s.

versus wild chestnuts.