Affected hosts
- Apis mellifera
Chronic bee paralysis virus infection
Chronic bee paralysis
Viral disease of adult bees that may cause trembling, inability to fly, black shiny bees, and an accumulation of crawling bees near the hive.
Agent
Chronic bee paralysis virus
Legal status
No
Signs and symptoms
Adults
- Trembling
- Inability to fly
- Crawling bees
- Distended abdomen
- Black, shiny, hairless bees
Colony
- Large numbers of dead or crawling bees
- Weakening
Diagnosis and confirmation
Field methods
- Recognition of a compatible syndrome
Laboratory methods
- RT-PCR and viral load assessment
Control and prevention
Good practices
- Reduce stress factors
- Improve ventilation
- Avoid overcrowding
- Replace the queen in recurrent outbreaks when technically justified
Prevention
- Good ventilation
- Adequate space
- Stress reduction
- Biosecurity
Monitoring
Indicators
- Number of crawling bees
- Trembling
- Laboratory confirmation
Frequency
- When mortality or abnormal behavior is observed