Influence of leaf volatiles of Eucalyptus citriodora Hook. on the growth and development of Exorista bombycis (Louis)

Koduvayur  C. Narayanaswamy,

Influence of leaf volatiles of Eucalyptus citriodora Hook. on the growth and development of Exorista bombycis (Louis)

Abstract:

Narayanaswamy K.C. 2000. Influence of leaf volatiles of Eucalyptus citriodora Hook.on the growth and development of Exorista bombycis (Louis). Ann. Trop. Res. 22[1-2]:32-39. The study evaluated the influence of olatiles emanating from crushed leaves of Eucalyptus citriodora Hook. on the growth and development of uzi fly (Exorista bombycis Louis), a serious endoparasitoid of silkworn (Bombyx mori L.). Exposure of freshly laid eggs of E. bombycis (Louis) to volatiles from the leaves of E.citriodora Hook, for different durations resulted in significant reduction in their hatchability. None of the maggots emerged from the host larvae when the eggs of the parasitoid were exposed for 64 and 74 hours to the volatiles. There was a significant increase in the duration of the life cycle aside from the reduction in the rate of pupation and adult emergence as the egg exposure period increascd. Findings indicate that the chronic effects of volatiles were sustained during embryonic development. The known major chemical components of E. citriodora such as citronellal, cineole, pinenes, pinocarveol, cuminaldehyde, sesquiterpene alcohols, aromadendrene, phenols and aldehydes are presumed to be responsible for its adverse effects on E. bombycis.

References:

ANONYMOUS. 1953. A Wealth of India - A Dictionary of Indian Raw Materials and Industrial Products. Part III: Industrial Products, CSIR, New Delhi.
ANONYMOUS. 1979. Eucalyptus for Planting. Food and Agriculture Organization, United Nations, Rome.
BARNBY, M.A. and J.A. KLOCKE, 1987. Effects of azardirachtin on the nutrition and development of the tobacco budworm, Helicoperva virescens (Fab.). J. Insect Physiol. 33:69-75.
FERNANDEZ, R.R. and K.K. SURI. 1981. Studies on the oil of Eucalyptus citriodora Hook. Grown at Dehra Dun. Indian Forester. 107:243-248.
JAIN, S.S., A.N. SAOJI and V.K. DESHMUKH. 1976. Indian J. Pharmacy. 38(2):57.
JOLLY, M.S. 1981. Uzi Fly, Its Identification, Prevention and Control, CSRTI, Mysore, India.
KUMAR, P., D. MANJUNATH, K.S. PRASAD, R. KISHORE, V. KUMAR and R.K. DATTA. 1993. Integrated management against the uzi fly, Exorista bombycis (Louis), a parasitoid of the silkworm, Bombyx mori L. Int’l J. Pest Mgt. 39(4):445-448.
PATHAK. P.H. and S.S. KRISHNA. 1991. Post-embryonic development and reproduction in Corceyra cephalonica (Stainton) on exposure to eucalyptus and neem oil volatiles. J. Chemical Ecology. 17(2):2553-2578.
PATHAK. P.H. and S.S. KRISHNA. 1993. Effect of certain plant oil volatiles on the eggs of Earias viotella (F.). Ann. For: 1(2):1165-1167.
SNEDECOR, G. W. 1956. Statistical Methods. Iowa State College Press, Ames.
SOOD, V.K., M.G. KARNIK and H. NARAIN. 1964. Studies on oils of Indian Eucalyptus citriodora. Indian Forester: 90:176-178.
SRIVSTAVA, R.K. and S.S. KRISHNA. 1990. Temperature and exposure duration-related cucalyptus oil odour effects on egg hatchability and subsequent post-cmbryonic development in Dysdercus koenigii (F.). J. Adv. Zool. 11(2):103-105.
SRIVSTAVA, R.K. and S. S. KRISHNA. 1991. Effect of eucalyptus oil treatment provided to adults of Dysdercus koenigii (F.) on the insect reproductivity and subsequent post-embryonic developmental progress. J. Adv. Zool. 12(1):18-23.
STAMOPOULUS. D.C. 1991. Effect of four oil vapours on the oviposition and fecundity of Acanthoscelides obtectus (Says.). Laboratory evaluation. J. Stored Prod. Res. 27(4):199-203.