Influence of Plant Diversity on the Numerical Response of Eriopis connexa (Coleoptera: Coccinellidae) to Changes in Cereal Aphid Density in Wheat Crops

Table 1

Total and relative abundance of aphids on wheat crops with a high (HPD) and low plant diversity (LPD). Balcarce, 2007 and 2008.

	Systems	Schizaphis graminum		Metopolophium dirhodum		Sitobion avenae		Total (n)
		Total abundance; (no.)	Relative; abundance (%)	Total abundance; (no.)	Relative; abundance (%)	Total abundance; (no.)	Relative; abundance (%)
2007	HPD	43	16,67	89	34,50	126	48,84	258^a
	LPD	56	15,38	128	35,16	180	49,45	364^b
2008	HPD	82	17,05	152	31,60	247	51,35	481^c
	LPD	102	17,09	188	31,49	307	51,42	597^d

Mean values followed by the same letter indicate no significant differences according to the LS means multiple range test at 𝑃<0.05.