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자료유형
학술저널
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저널정보
한국잠사학회 International Journal of Industrial Entomology International Journal of Industrial Entomology 제11권 제2호
발행연도
2005.1
수록면
81 - 86 (6page)

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The mode of transmission, effect on fecundity, hatching and tissues specificity of a microsporidian (Lbms) recovered from Lamerin breed of the silkworm Bombyx mori L. was studied and compared with standard strain Nosema bombycis. Peroral inoculation of Lbms or N. bombycis to zeroday of 4th instar larvae of silkworm was the most suitable method for producing information on development of stage specific mortality,pupation and obtaining infected adults for transovarial transmission studies. It was observed that pupal mortality, the percentage of moths emerged and the percentage of moths infected were significantly high in N. bombycis infected batches as compared Lbms in all the three tested breeds of the silkworm. However no significant difference was observed in larval mortality.The fecundity and hatchability was not affected significantly in Lbms infected adults, however significant reduction in egg production, fecundity, hatchability and increased egg retention was observed in mother moths infected with N. bombycis. The Lbms is transmitted both horizontally and vertically at lower rate due to its low rate of proliferation. The transovarial transmission of Lbms to the F1 progeny generation through eggs averaged only 61.33 ± 5.10% whereas N. bombycis was transmitted at 100%. The Lbms had low oral infectivity and low transovarial transmission in silkworm B. mori.

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