Israeli Acute Paralysis Virus: Epidemiology, Pathogenesis and Implications for Honey Bee Health
Figure 3
Average prevalence of IAPV infection in a single month.
(A) Strong colonies. (B) Weak colonies. For both strong and weak colonies, the prevalence of IAPV infection in the brood was significantly higher than in adult bees. While strong colonies did not exhibit significant seasonal variation in IAPV infection, the infection rate of IAPV in adult bees in weak colonies increased from Spring to Summer and Fall and peaked in the Winter. All strong colonies survived through the cold winter months while the weak colonies collapsed before February.