• Title/Summary/Keyword: Occasional artificial hatching

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Improvement of Occasional Artificial Hatching and Incubation Method in Diapause Egg of the Wild Silkmoth, Antheraea yamamai (천잠알의 수시부화 및 최청법 개선)

  • Yoon, Hyung-Joo;Kang, Pil-Don;Lee, Sang-Mong;Kim, Sam-Eun;Kim, Ki-Young
    • Korean journal of applied entomology
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    • v.46 no.2
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    • pp.295-302
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    • 2007
  • We investigated starvation of hatching larvae, occasional artificial hatching and incubation method to establish year-round rearing of the wild silkmoth, Antheraea yamamai. In the test of starvation of hatching larvae for brushing at a time, the survival rate of the fourth instar of larvae starved for 1 day after hatching in $25^{\circ}C\;and\;5^{\circ}C$ was 83.3% and 96.0%, respectively. The result represents that the survival rate is high at low temperature during starvation. In the occasional artificial hatching test for multi-times rearing of A. yamamai, the useful hatchability is high at $5^{\circ}C$ in case of preserving eggs for 2 months from incubation time, and at both $2.5^{\circ}C\;and\;0^{\circ}C$ in case of over 6 months. A new incubation method with pre-incubation at $15^{\circ}C$ and 24 D photoperiod showed high hatchability about 80% for only 2 days compared with hatching for 5-6 days in traditional incubation method with the preservation at $25^{\circ}C$.