Term
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Definition
Infectious disease, slightly contagious, caused by RNA virus
- 90% of the time, not serious
- larvae die within a sac |
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Term
| Why does the larvae die within a sac? |
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Definition
| Because they can't molt skin |
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Term
| What is the development of Sac brood? |
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Definition
1) larvae either become infected with food, or queen layed already infected eggs
2) multiplies and prevents molting and pupation
3) death |
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Term
| What are the symptoms of Sac brood? |
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Definition
1) open and capped cells are affected
2) cappings may be pierced
3) die with upright head "upside down ice-cream cone"
4) head darkens and hardens
5) contained in a sac with fluid (rich with virus) |
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Term
| If the virus-containing fluid is so easily spread, why is the disease not easily transmitted? |
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Definition
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Term
| How can we control the spread of Sac Brood? |
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Definition
- chemotherapeutic agents registered
- replace with healthy combs if severe (only 1-2% of cases)
- use hygienic bees |
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