Egyptian Journal of Biological Pest Control

Table 3 Stage-specific life table of H. dimidiata on R. padi at 24 ± 1 °C

From: Age and stage-specific life table parameters of Harmonia dimidiata (Coleoptera: Coccinellidae) fed on Rhopalosiphum padi (Hemiptera: Aphididae) at different temperatures

Stage X	l_x	D_x	lx	100 q_x	S_x	T_x	MSR	IM	Log l_x	e_x	k-values
Egg	100	6	97	6	0.94	644	0.07	5.14	2	6.44	0.027
1st instar	94	6	91	6.38	0.94	547	0.07	5.38	1.97	5.82	0.029
2nd instar	88	2	87	2.27	0.98	456	0.02	1.84	1.94	5.18	0.01
3rd instar	86	2	85	2.33	0.98	369	0.02	1.87	1.93	4.29	0.01
4th instar	84	1	83.5	1.19	0.99	284	0.01	0.95	1.92	3.38	0.005
Pre-pupa	83	2	82	2.41	0.98	200.5	0.03	1.96	1.92	2.42	0.011
Pupa	81	3	79.5	3.70	0.96	118.5	0.08	6.00	1.91	1.46	0.016
Adult	78	78	39						1.89		K = 0.108

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