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 | ||
| Article 8, Volume 30, Issue 11, November 2005, Pages 7141-7146 PDF (1.61 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2005.239427 | ||
| Author | ||
| Somaia E. Aly | ||
| 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. | ||
| Keywords | ||
| Bombyx mori; Photoperiod; Utilization of food | ||
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