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Table 7 Developmental parameters (mean ± SE) of A. asychis 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

Aphid age groups

A. asychis

Oviposition period (days)

Post oviposition period (days)

Daily eggs laid/female

Total fecundity (eggs/female)

Daily host/female

Total host feeding (aphids/female)

1–2 days

19.00 ± 0.45 (19–20)

6.80 ± 0.66 (6–8)

7.00 ± 2.87 (2.8–11)

138.60 ± 7.40 (122–152)

4.0 ± 1.53

89.2

4–5 days

15.00 ± 0.45 (15–16)

5.40 ± 0.69 (4–7)

3.20 ± 1.43 (1.8–6.6)

49.80 ± 3.53 (39–55)

2.3 ± 0.65

43.4

t value

19.88*

3.21*

3.80*

4.41*

p value

< 0.00001

< 0.00001

< 0.00001

< 0.00001

  1. Figures in parentheses represent the range
  2. All values are mean of 10 observations
  3. *Significant at p < 0.05 and df = 18