Table 3 Mutual Interference parameters estimated by Hassell and Varley model equation at various densities of parasitoids and constant density (50) of D. echinocacti second instar nymphs
Parasitoid | Parasitoids density | Host density | Host parasitized per parasitoid female (mean ± SE) | Area of discovery (a) | Searching efficiency (E) |
|---|---|---|---|---|---|
P. diaspidis | 1 | 50 | 11.80 ± 1.04 A | 0.12 A | 0.060 A |
2 | 50 | 8.75 ± 0.9 B | 0.09 B | 0.022 B | |
4 | 50 | 7.15 ± 0.37 C | 0.09 B | 0.005 C | |
8 | 50 | 4.16 ± 0.23 D | 0.06 C | 0.002 D | |
A. debachi | 1 | 50 | 10.10 ± 0.94 A | 0.10 A | 0.067 A |
2 | 50 | 7.80 ± 0.63 B | 0.08 B | 0.024 B | |
4 | 50 | 6.48 ± 0.34 C | 0.08 B | 0.007 C | |
8 | 50 | 3.76 ± 0.16 D | 0.05 C | 0.003 D |