International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Effect of Different Periods of Cold Storing of Bivoltine Eggs on Subsequent Generation Rearing Performance

  • Venkatesh, H. (Karnataka State Sericulture Research and Development Institute Thalaghattapura) ;
  • Raghuraman, R. (Karnataka State Sericulture Research and Development Institute Thalaghattapura) ;
  • Katti, S.R. (Karnataka State Sericulture Research and Development Institute Thalaghattapura)
  • Published : 2004.12.01
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Abstract

Different methods of cold storing of bivoltine eggs are in practice to postpone hatching. Bivoltine eggs undergo hibernation if they are not acid treated within 20 - 24 hrs of oviposition, which depends on race, ambient temperature and humidity. The schedules adopted for cold storing include hibernation schedule (Hib), ordinary chilling (OC), short term chilling (STC) and acid treated layings (AT). Peanut cocooning race ${NB_4}{D_2}$ has been subjected for the present assessment. Cocoons harvested from the crop pertaining to all the four methods of cold storing have been used for producing different combinations and acid treated followed by rearing. The performance in respect of chawki loss, maximum larval weight 4({5^th} age)$, yield/ 10,000 larvae (no), cocoon and shell weight showed maximum values for hibernation ${\times}$ hibernation combination followed hibernation with OC and hibernation with AT. Lowest performance was recorded when STC batch source females were used.

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References

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