Nosema Disease 



CAUSE. 



Scientific research conducted in Britain, Germany, 

 America, New Zealand, and many other countries has 

 confirmed the existence of a widespread disease of adult 

 bees known as Nosema Disease, which is due to a pro- 

 tozoon called Nosema apis. Although not necessarily 

 fatal, this disease is weakening to colonies and may be 

 responsible for the degeneration of stocks, resulting 

 in the diminution or even loss of the honey harvest. 



SYMPTOMS. 



This disease, if present, is not difficult to diagnose 

 microscopically by examination of the Chyle Stomachs 

 of suspected specimens. It is no more correct to assert 

 the presence of Nosema Disease or its absence than to 

 do the same with Acarine Disease, purely guided by 

 outward symptoms which are often very slight. The 

 suspicion of the apiarist is generally aroused by the 

 slowness or the failure of the affected colony to develop 

 normally. Some crawling may also be witnessed in bad 

 cases with the crawling bees suffering from distended 

 abdomens. Many affected bees are lost whilst foraging. 



EFFECT. 



In the presence of a good queen the disease may follow 

 a slow course and ultimately die out. Under other 



