Journal of Chemical Ecology

, Volume 17, Issue 12, pp 2553–2558 | Cite as

Postembryonic development and reproduction inCorcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) on exposure to eucalyptus and neem oil volatiles

  • P. H. Pathak
  • S. S. Krishna


Postembryonic development and adult emergence ofCorcyra cephalonica (Stainton) were adversely affected in varying degrees when individuals were reared for the first 2 weeks of larval life or for a similar duration from the sixteenth day of their lives in an environment of eucalyptus oil volatiles. This was, however, not so in the progeny of parents exposed to these volatiles for only 5 min. Exposure of this pest to neem oil volatiles during larval stages for similar periods failed to produce such adverse effects. A marked decline in the reproductive potential, in terms of egg output and egg hatchability, of the moth was observed when the larvae were reared for the first 15 days in the presence of eucalyptus oil volatiles or when the parents were exposed for 5 min to such an environment during adult life. Thus, a “carry over” of the detrimental effect of the volatile(s) of this oil on the reproductive potential of the pyralid was indicated.

Key words

Plant oils Eucalyptus neem postembryonic development reproductive potential Corcyra cephalonica Lepidoptera Pyralidae 


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  1. Ansari, A.A., andKrishna, S.S. 1987. Clove oil vapour lowers reproductive efficiency inCorcyra cephalonica (Stainton) (Lepidoptera: Pyralidae).Biol. Bull. India, 9:7–10.Google Scholar
  2. Chapman, R.F. 1982. The Insects: Structure and Function. ELBS and Hodder and Stoughton, Hong Kong.Google Scholar
  3. Krishna, S.S., andMishra, S.N. 1985. A behavioural assessment of the impact of some environmental and physiological factors on the reproductive potential ofCorcyra cephalonica (Stainton) (Lepidoptera: Pyralidae).Proc. Indian Acad. Sci. (Anim. Sci.) 94:249–264.Google Scholar
  4. Kumar, A., andKrishna, S.S. 1991. Rice moth reproduction in relation to quality of stored products in the insect's breeding environment.Uttar Pradesh J. Zool. In press.Google Scholar
  5. Mishra, S.N., andKrishna, S.S. 1979. Influence of some specific time- and age-related mating schedules on oviposition and egg fertility inCorcyra cephalonica (Stainton) (Lepidoptera: Galleridae).Entomon. 4:197–199.Google Scholar
  6. Paterson, D.D. 1939. Statistical Technique in Agricultural Research. McGraw-Hill, New York.Google Scholar
  7. Pathak, P.H., andKrishna, S.S. 1985. Neem seed oil, a capable ingredient to check rice moth reproduction.Z. Ang. Ent. 100:33–35.Google Scholar
  8. Pathak, P.H., andKrishna, S.S. 1992. Effects of odours of certain plant oils or leaves on the egg hatchability inCorcyra cephalonica (Stainton) (Lepidoptera: Pyralidae).Mitt. Zool. Mus. Berl. 68. In press.Google Scholar
  9. Piltz, H. 1977.Corcyra cephalonica (Stainton), pp. 439–440,in J. Kranz, H. Schmutterer, and W. Koch (eds.). Diseases, Pests and Weeds in Tropical Crops. Verlag Paul Parey, Berlin.Google Scholar
  10. Snedecor, G.W. 1956. Statistical Methods. Iowa State College Press, Ames.Google Scholar
  11. Wigglesworth, V.B. 1972. The Principles of Insect Physiology. ELBS and Chapman & Hall, London.Google Scholar

Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • P. H. Pathak
    • 1
  • S. S. Krishna
    • 1
  1. 1.Entomology Laboratory Department of ZoologyUniversity of GorakhpurU.P.India

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