微粒子病蛾早期発蛾の特性利用による母蛾の微粒子病検査法改良に対する実験計画

概要

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Theoretical consideration was made to make inspection for pebrine control by making use of the characteristic of early eclosion of silkworm moths diseased with pebrine of a lot, and the description was made on the five factors of investigations which are considered to be indispensable and sufficient for establishing a new sampling inspection method : -1. Infection formula of pebrine disease. 2. Relationship between eclosion dates and percentage of diseased moths of a lot. In this item, there include experiments which are performed in all cases which have from the case of heavily infected moths with high, diseased percentage to the case of the very lightly infected, and in an unhealthy lot. 3. Comparison of descending grade of percentages of diseased moths among heavily to lightly infected moths accrding to the retardation of eclosion dates by the results of experiments 2. 4. Comparison between weights of healthy undried an economicl and rational method of sampling cocoon, its silk layer and those of the diseased respectively. 5. Investigation on the hereditary transportation of parasites into silkworm eggs. 5A. The case of hibernating eggs. 5B. Comparison between common acid treated eggs and those of the chilled and the acid treated. In order to perform above experiments, it is necessary to make moths with various desired percentages of diseased ones infected with pebrine at ones discretion. Therefore, the results of experiment on the numerical infection of spores to a silkworm larva per os which gave satisfactory answer were described. By this and the other correlated experiments, it became easy to obtain moths, apparently healthy despite infected with pebrine, and those with any desired disease percentages by oral infection at any instar.
日本応用動物昆虫学会の論文
1965-06-25

著者

大島格
農林省蛋糸試験場:(現)東京都世田谷区砧町59の5

微粒子病蛾早期発蛾の特性利用による母蛾の微粒子病検査法改良に対する実験計画

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