GROWTH AND DEVELOPMENT OF THE SILKWORM (BOMBYX MORI L.) C301 WITH HEAT SHOCK TREATMENTS

Darma Bakti, Masitta Tanjung, Syafruddin Ilyas, Maryani Cyccu Tobing

Abstract: Growth and development of the silkworm larvae are strongly influenced by environmental changes such as temperature. The role of temperature on the growth and development of larvae is included as new studies on heat shock proteins. Studies on the growth and development of silkworm larvae by heat shock with different temperatures have been conducted in physiology animal Laboratory Department of Biology University of Sumatera Utara. The Research design used was a complete randomized design (CRD) with four treatments and five replications each consisting of 20 larvae. The treatment consists of administering heat shock at temperature of 34, 38 and 42°C, and without heat shock (ambient temperature). Heat shock was conducted in early 4th instar for 3 hours. The research results showed that of the heat shock can increase the percentage of mortality, accelerate the larval stage, reducing larvae weight by lowering the growth; consumption and digestibility. It also decrease productivity and lead to failure of the formation of cocoon, pupae and imago.

Keywords: Bombyx mori; development; growth; heat shock

Date published: 2018-01-15