Journal of Sericultural and Entomological Science (한국잠사곤충학회지)

Korean Society of Sericultural Science (한국잠사학회)
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Effects of Insect Growth Regulators on Developmental Physiology of the Silkworm, Bombyx mori L. III. With reference to the influence of Fenoxycarb on the egg laying and the hatching

곤충 성장조절제(IGR)가 누에의 발육생리에 미치는 영향 III. Fenoxycarb가 산란 및 부화에 미치는 영향

  • 황석조 (농촌진흥청 잠사곤충연구소)
  • Published : 1997.06.01
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Abstract

Oral application of fenoxycarb, O-ethyl N-(2-(4-phenoxyphenoxy)ethyl) carbamate, the commercial formulation Insegar, on the 1st day of the 3rd instar made no difference in the egg laying and the hatchability as compared to 750 grains for the number of eggs laid, 53 grains for the number of the resideual eggs unlaid, 749 grains for the number of fertirized eggs, 97% for the total hatchability, and 95% for the useful hatchability as in the control but on the first day of the 4th instar, the number of the remainder eggs in the ovary increased by 2.4 folds, and reduced number of the eggs laid, number of unfertilized eggs, the hatchabillity and useful hatchability by 39%, by 66%, by 68% and by 72%, respectively. When diluted Insegar was applied topically every other two days from the pupae to the moth at concentration of 10-6, 10-7, 10-8, 10-9, 10-10 the number of eggs laid, the number of the unfertilized eggs, the total hatchability and the useful hatchability were decreased. More severe decrease took place as concentration lowered and the earlier application.

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References

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