Table 2 Functional response parameters estimated for a single female of P. diaspidis and A. debachi parasitizing D. echinocacti second instar nymphs
Parasitoid | Parameter | Estimate | SE | 95% CI | |
|---|---|---|---|---|---|
Lower | Upper | ||||
P. diaspidis | Attack rate (h–1) (a) | 0.73 | 0.25 | 0.63 | 0.84 |
Handling time (h) (Th) | 0.09 | 0.02 | 0.08 | 0.10 | |
Max. attack rate (T/Th) | 323.59 | 109.45 | 278.44 | 368.74 | |
Searching efficiency (E) | 0.71 | 0.26 | 0.60 | 0.81 | |
Searching time (T − ThNe) | 22.88 | 0.74 | 22.68 | 23.08 | |
A. debachi | Attack rate (h–1) (a) | 0.60 | 0.18 | 0.54 | 0.67 |
Handling time (h) (Th) | 0.06 | 0.02 | 0.05 | 0.07 | |
Max. attack rate (T/Th) | 480.21 | 146.78 | 428.40 | 532.02 | |
Searching efficiency (E) | 0.59 | 0.19 | 0.52 | 0.68 | |
Searching time (T − ThNe) | 23.36 | 0.43 | 23.24 | 23.48 | |