Influence of Neem oil on Ovipositon Deterrence of Uzifly Exorista Bombysis


Authors : Dr.Cheruku Appiya Chinnamma

Volume/Issue : Volume 2 - 2017, Issue 4 - April

Google Scholar : https://goo.gl/qW5nFF

Scribd : https://goo.gl/QwyxNR

Thomson Reuters ResearcherID : https://goo.gl/3bkzwv

Pests and diseases are important factors affecting the productivity of silk worm. Many kinds of pests and diseases of Mulberry and silk worm along with appropriate measures to control them, have been identified. Besides being susceptible to different diseases, the silkworm, Bombyx mori L. is also attacked by a number of pests. Among the insect pests that attack silkworm, the most formidable one is a dipteran parasitoid, Uzifly. Fifth instar silkworm larvae were reared in the wire mesh cage and one pair of two day old Uzifly were released into the cage for oviposition. Sixty Uzifly eggs on the body of the fifth instar silkworm larvae were selected (Silkworm larvae having minimum one egg and maximum two Uzifly eggs were selected) and treated with 0.5, 1 and 1.5 µl of neem oil / 1µl of acetone with help of automizer to record the egg hatchability. Controls and Carrier controls were maintained to compare the results and the experiments were replicated six times. At 0.5µl, 1µl and 1.5µl of neem oil/1µl of acetone oviposition of the adult Uzifly on silkworm larvae recorded on an average was 126.83±0.477, 108.83±0.703 and 90.17±0.654 respectively where as in the control and carrier control it was recorded as 169.33±0.615 and 164.67±0.333 respectively. From the results it is evident that neem oil treated resultants reduced the oviposition of Uzifly on the fifth instar silkworm larvae compared to the controls and the oviposition of Uzifly on the fifth instar silkworm larvae reduced with increase in the concentration of neem oil.

Keywords : Silk worm ( Bombyx mori) Uzifly( Exorista bombysis) Neem oil, Oviposition deterrence.

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