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Table 2 Mean developmental duration (mean ± S.E.) of A. asychis, A. ervi, and D. rapae on different nymphal instars 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

Aphid Instar Developmental duration (days)
A. asychis A. ervi D. rapae
Oviposition to mummification Mummification to adult emergence Oviposition to adult emergence Oviposition to mummification Mummification to adult emergence Oviposition to adult emergence Oviposition to mummification Mummification to adult emergence Oviposition to adult emergence
I 6.80 ± 1.04a (6–8) 7.80 ± 0.56a (7–8) 14.60 ± 1.11a (14–16) 15.20 ± 0.56a (15–16) 14.40 ± 0.68a (14–15) 29.60 ± 0.68a (29–30) 7.20 ± 1.04a (6–8) 8.00 ± 0.88a (7–9) 15.20 ± 1.36a (13–16)
II 6.60 ± 0.68ab (5–7) 5.00 ± 0.88b (4–6) 11.60 ± 1.89b (10–13) 15.00 ± 0.88a (15–16) 13.80 ± 1.04ab (13–15) 28.80 ± 1.04a (28–30) 6.60 ± 0.68ab (5–7) 6.60 ± 0.68b (6–8) 13.20 ± 1.04b (13–14)
III 5.80 ± 1.04bc (5–6) 4.80 ± 1.04b (4–6) 10.60 ± 0.68b (9–12) 13.40 ± 0.68b (13–15) 13.40 ± 0.68b (13–14) 26.80 ± 1.04b (26–29) 6.00 ± 0.88bc (5–6) 5.60 ± 0.68c (5–7) 11.40 ± 0.68c (11–12)
IV 5.60 ± 0.68c (5–6) 4.60 ± 0.68b (4–5) 10.40 ± 0.68b (9–11) 12.20 ± 0.56c (12–13) 12.00 ± 0.88c (11–13) 24.20 ± 1.04c (24–25) 5.60 ± 0.68c (5–6) 4.60 ± 1.11d (4–5) 10.20 ± 1.36c (9–11)
LSD (p = 0.05) 0.95 0.87 1.29 0.73 0.90 1.04 0.90 0.92 1.24
F3, 16 3.47 26.78 20.32 33.50 11.56 48.31 5.44 22.18 28.00
p value 0.041 < 0.00001 0.000011 < 0.00001 0.000337 < 0.00001 0.009 < 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