Performance of the parasitoid species Aphelinus asychis Walker (Hymenoptera: Aphelinidae), Aphidius ervi (Haliday) (Hymenoptera: Braconidae) and Diaeretiella rapae (McIntosh) (Hymenoptera: Braconidae), using Myzus persicae (Sulzer) (Hemiptera: Aphididae) as host

Egyptian Journal of Biological Pest Control

Table 5 Mean longevity (mean ± S.E.) of A. asychis, A. ervi, and D. rapae females parasitizing different age groups of M. persicae

Parasitoids	Mean longevity of female parasitoids parasitizing different age groups of M. persicae
	Longevity in days* (mean ± SE)
	Host age of 1–2 days	Host age of 4–5 days
A. asychis	25.80 ± 3.96^a (20–30)	20.40 ± 1.52^a (19–22)
A. ervi	11.20 ± 1.92^b (9–14)	7.20 ± 1.48^b (5–9)
D. rapae	9.50 ± 0.91^b (7–11)	5.50 ± 1.13^c (3–8)
LSD (p = 0.05)	2.04	1.37
F_{2, 27}	162.14	296.88
p value	< 0.00001	< 0.00001

Figures in parentheses indicate range
Mean values within the columns bearing the same letters are not significantly different—LSD (p = 0.05)
*All values are mean of 10 observations