頁籤選單縮合
題名 | 幼蟲芽孢桿菌對蜜蜂的致病力=Pathogenicity of Bacillus Larvae to Larvae of the Honeybee (Apis Mellifera) |
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作者姓名(中文) | 陳裕文; 王重雄; 何鎧光; | 書刊名 | 中華昆蟲 |
卷期 | 17:1 1997.03[民86.03] |
頁次 | 頁23-32 |
分類號 | 433.3 |
關鍵詞 | 蜜蜂; 幼蟲芽孢桿菌; 美洲幼蟲病; 致病力; Honeybee; Bacillus larvae; American foulbrood; Pathogenicity; |
語文 | 中文(Chinese) |
中文摘要 | 利用人工接種幼蟲芽孢桿菌(Bacillus larvae)孢子於l日齡工蜂幼蟲,發現幼蟲罹病率與死亡率並無季節性的差異,LD50及LD95分別為21個孢子與442個孢子,顯示病原孢子對此齡幼蟲有很高的致病力。罹病幼蟲進入封蓋期(capping stages)後才會呈現典型美洲幼蟲病(American foulbrood)的病徵,高劑量的感染會造成部分幼蟲(13.8%-23.3%)無法進入封蓋期。相對於l日齡幼蟲的高致病力,此病原孢子對2日齡幼蟲的致病方大為降低,接種高劑量孢子(4.5 ´ 104個孢子)只有37.2% ±3.4%的死亡率。幼蟲芽孢桿菌對3日齡幼蟲的致病力極低,接種同一劑量孢子仍無罹病蟲體的出現。 |
英文摘要 | Pathogenicity of Bacillus larvae spores to 1-day-old larvae of the worker honeybee, Apis mellifera, in which season (15-20℃) was determined by experimental infection in Taiwan. Pooled data showed that LD50 and LD95 are 21 spores and 422 spores, respectively. The results revealed that 1-day-old larvae are highly susceptible to B. larvae. From the results of winter bioassay, 4 selected lethal doses, LD30, LD50, LD70, and LD95, were inoculated onto 1-day-old larvae the following early summer (25-30℃). The results showed no significant differences in pathogenicity between these 2 bioassays ran in different seasons. However, the mortality of 2-day-old larvae to B. larvae was much lower than that of 1-day-old larvae. The mortality of 2-day-old larvae was 37.2%±3.4% after 4.5×104 spores/larva inoculation, while 3-day-old larvae were not susceptible to this pathogen even at the same dose. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。