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Control of hatching time of eggs of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae)

  • R. F. Chapman (a1), E. A. Bernays (a1), S. Woodhead (a1), D. E. Padgham (a1) and S. J. Simpson (a1)...

In the field in India, most eggs of Chilo partellus (Swinh.) hatched in the morning soon after first light. Laboratory experiments show that in continuous light hatching occurs after 250 hour-degrees of development above 12°C from the time at which the head capsule darkens (blackheading). Hatching may be advanced by a lights-on stimulus or retarded by darkness, and these effects account for the extensive hatching at dawn. Hatching is not entrained by a circadian rhythm. The significance of hatching at this time of day is discussed.

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Bernays, E. A.Chapman, R. F.. & Woodhead, S. (1983). Behaviour of newly hatched larvae of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) associated with their establishment in the host–plant, sorghum. — Bull. ent. Res. 73, 7583.
Chapman, R. F.Woodhead, S.Bernays, E. A. (1983). Survival and dispersal of young larvae of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) in two cultivars of sorghum. — Bull. ent. Res. 73, 6574.
Kiritani, K.. & Iwao, S. (1967). The biology and life cycle of Chilo suppressalis (Walker) and Tryporyza (Schoenobius) incertulas (Walker) in temperate–climate areas. — pp. 45–101 in The major insect pests of the rice plant. Proceedings of a symposium at the International Rice Research Institute, September, 1964. — 729 pp. Baltimore, Johns Hopkins Press.
Marumo, I. (1932). On the hatching time of Chilo simplex, Butl. [in Japanese]. — Oyo-Dobuts.-Zasshi. 4, 292299.[Summarised in Kiritani & Iwao (1967).]
Minis, D. H.Pittendrigh, C. S. (1968). Circadian oscillation controlling hatching: its ontogeny during embryogenesis of a moth. — Science, N.Y. 159, 534536.
Reddy, K. V. S.. & Davies, J. C. (1978). A new medium for mass rearing of the sorghum stem borer, Chilo partellus Swinhoe (Lepidoptera: Pyralidae) and its use in resistance screening. — Indian J. Pl. Prot. 6 (1), 4855.
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Bulletin of Entomological Research
  • ISSN: 0007-4853
  • EISSN: 1475-2670
  • URL: /core/journals/bulletin-of-entomological-research
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