Aly, S. (2005). EFFECT OF PHOTOPERIOD ON SOME BIOLOGICAL PARAMETERS AND UTILIZATION OF FOOD OF THE MULBERRY SILKWORM Bombyx morl L. (LEPIDOPTERA: BOMBYCIDAE). Journal of Plant Protection and Pathology, 30(11), 7141-7146. doi: 10.21608/jppp.2005.239427
Somaia E. Aly. "EFFECT OF PHOTOPERIOD ON SOME BIOLOGICAL PARAMETERS AND UTILIZATION OF FOOD OF THE MULBERRY SILKWORM Bombyx morl L. (LEPIDOPTERA: BOMBYCIDAE)". Journal of Plant Protection and Pathology, 30, 11, 2005, 7141-7146. doi: 10.21608/jppp.2005.239427
Aly, S. (2005). 'EFFECT OF PHOTOPERIOD ON SOME BIOLOGICAL PARAMETERS AND UTILIZATION OF FOOD OF THE MULBERRY SILKWORM Bombyx morl L. (LEPIDOPTERA: BOMBYCIDAE)', Journal of Plant Protection and Pathology, 30(11), pp. 7141-7146. doi: 10.21608/jppp.2005.239427
Aly, S. EFFECT OF PHOTOPERIOD ON SOME BIOLOGICAL PARAMETERS AND UTILIZATION OF FOOD OF THE MULBERRY SILKWORM Bombyx morl L. (LEPIDOPTERA: BOMBYCIDAE). Journal of Plant Protection and Pathology, 2005; 30(11): 7141-7146. doi: 10.21608/jppp.2005.239427
EFFECT OF PHOTOPERIOD ON SOME BIOLOGICAL PARAMETERS AND UTILIZATION OF FOOD OF THE MULBERRY SILKWORM Bombyx morl L. (LEPIDOPTERA: BOMBYCIDAE)
Dept. of Economic Entomology, Fac. of Agric., Alexandria Univ., Egypt
Abstract
The effect of photoperiod on the relative developmental speed of fifth instar larvae of mulberry silkworm Bombyx moti were studied. Tested photoperiodic conditions were: 24 hours lightO hours darkness(24L:OD), (12L:12D) and OL:24D). The mean weight of each of mature larvae, pupae, shell cocoon and silk glands significantly increased under complete darkness. Also, the other biometric measurements,i.e, the total mean laid eggs/female and utilization of food increased significantly under complete darkness compared with those reared under other tested photoperiods.