Functional response of the predatory species Orius albidipennis Reuter (Hemiptera: Anthocoridae) to two life stages of Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Egyptian Journal of Biological Pest Control

Table 2 Estimated (mean ± SE) searching efficiency (a) and handling time (T_h) of O. albidipennis female on eggs and third nymphal stages of B. tabaci

Developmental stage	Parameters	Estimate	Asymptotic SE	Asymptotic 95% CI		T/T_h	R ²
				Lower	Upper
Third nymphal instar	Constant (b)	0.0069	0.000612	0.00598	0.00842	23.20	0.9551
	T _h	1.034	0.0314	0.9519	1.0772
Egg	a	0.0723	0.00693	0.0506	0.0782	68.39	0.997
	T _h	0.3509	0.0975	0.1667	0.5548