Korean Journal of Veterinary Research 1976;16(2):165-171.
Studies on Nosema Disease of Honey Bees 2. Effectiveness of Thimerosal to Control Growth of Nosema apis(Zander, 1909) in Rearing Honey Bees
Myung Deuk Suh, Yung Bai Kang, Chang Sup Kim, Dong Sung Kim
Institute of Veterinary Research, Office of Rural Development
꿀벌의 Nosema병에 관한 연구 2. 인공감염봉군에 대한 실험실내 치료시험
서명득, 강영배, 김창섭, 김동성
농촌진흥청 가축위생연구소
Abstract
Experimental approaches on the effectiveness of thimerosal to control growth of Nosema apis (Zander, 1909) were carried out in the rearing honey bees. The rearing honey bees were artificially infected with various levels of spore isolated from local honey bees. The results obtained were summarized as follows: 1. In the experiments of therapeutic chemicals for Nosema disease, 0.01% and 0.02% thimerosal of sucrose-honey mixture was the most effective agent but the each concentration of amprolium, furazolidone, hygiene, sulfadimethoxine and terramycin did not show the any effects 2. It showed very high therapeutic effectiveness (over than 90%) that the treatment of three times every other day after the treatment of three times consecutive every day with 0.01% thimerosal, or the treatment of three times consecutive every day with 0.02% thimerosal. 3. When 0.02% thimerosal was administered three times consecutive every day to honey bees at the 4th day before artificial inoculation of N. apis, it showed very high degree (100%) of prevalence control effectiveness, and it also showed high degree (over than 90%) in administration at the 7th day before, and over than 80% at the 10th day before. Then authors found that thimerosal has the prevalence control effectiveness as well as the treatment effectiveness. 4. In the rearing honey bee colony, 0.02% thimerosal showed the high degree (over than 80%) of therapeutic effectiveness with the various levels which contained from the light decree of infection to the severe degree of it.


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