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

From: 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

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 ± 3.96a (20–30) 20.40 ± 1.52a (19–22)
A. ervi 11.20 ± 1.92b (9–14) 7.20 ± 1.48b (5–9)
D. rapae 9.50 ± 0.91b (7–11) 5.50 ± 1.13c (3–8)
LSD (p = 0.05) 2.04 1.37
F2, 27 162.14 296.88
p value < 0.00001 < 0.00001
  1. Figures in parentheses indicate range
  2. Mean values within the columns bearing the same letters are not significantly different—LSD (p = 0.05)
  3. *All values are mean of 10 observations