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KMID : 1041219690100010001
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Journal of Sericultural and Entomological Science
1969 Volume.10 No. 1 p.1 ~ p.25
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Studies of the Physiological Impediments on the Silkworm(Bombyx mori L.) due to Anthracite Gas -Regarding with Carbon Monoxide and Sulphur Dioxide-
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Yoon Chong-Kwan
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Abstract
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Since widely use of anthracite for the radiating purpose in a rearing room in Korea, the weakness of silkworm, poor uniformity of the worm growth, the increase of missing worm ratio, unusual cocoon assorting ratio, and the decrease of cocoon layer ratio have been realized by the author, therefore, he has started out to search the mechanism of these evil influences regarding with various gas densities and terms of the gas treatment which will be supposed to be a warning for temperature control during the silkworm reading work. Among the anthracite gas components, CO or SO influence and their complexed harm effect were investigated through the use of anthracite gas, CO and SO gas. Meantime, each treatment was applied, separately, during the worm egg stage, young instar, adult instar and whole instar, because the harm intensity for any improperable rearing condition is flexible by the growing stages. Meantime, the gas density and term variation were applied for the above each treatment such as in case of anthracite and CO gas, the following treat methods were used. 1) 0.06% for 30 mins. 2) 0.06% for 1 hour. 3) 0.1% for 1 hour. 4) 0.15% for 1 hour. on the other hand, SO gas was used as 1) 120ppm for 30 mins. 2) 200ppm for 30 mins. 3) 400ppm for 30 mins. The measurement of gas density was proceeded by using CO tester (Carbon Monoxide Indicator) and SO tester (Indicator Sampler Cgf) which could keep any specific density before each treatment.
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