Talk to Tom L. who is on bee source about what happened to his 400 hives on sunflowers this year. Additionally, talk to Lyle Johnson who runs about 40,000 bees on almonds about the number of loses that came from SD and ND. He graded them and can tell you first hand. Unfortunately, my bees were not on sunflowers so I didn't experience these losses. However, since my information is second hand as related to me by those who actually dealt with it and therefore not preferable, you now can contact them for "first hand" feedback.I think first hand info/feedback from folks is preferable to second/third hand stories.
Written in the older editions of the ABC & XYZ of Beekeeping there are to diseases documented.I do not treat and have over 50% loses. I posted videos of huge die offs during cold and wet weather, Nov - Jan and I still see an excess of dying bees. Didn't seem like mites to me.
Tom, do you treat prophylactically or are you avoiding chems?Semi to ND, #1 bees, low to no mites. After check, same for nosema. Virtually 100% loss. 80+ lbs surplus honey. I've been sprayed so many times i can't remember them all but never seen anything like this
Sure, Why not.Additionally, wouldn't the survey have to include those who DO treat with chemicals and haven't experienced CCD?
Frank, was your video the one with two rows of colonies with large masses of crawling bees in the aisle in between?I do not treat and have over 50% loses. I posted videos of huge die offs during cold and wet weather, Nov - Jan and I still see an excess of dying bees. Didn't seem like mites to me.
SEE:I've never heard anyone make a correlation between CCD and Nosema before.
ALSO, back in 2007:This is the first case report of honeybee colony collapse due to N. ceranae in professional apiaries in field conditions reported worldwide. No other significant pathogens or pesticides (neonicotinoids) were detected and the bees had not been foraging in corn or sunflower crops. The treatment with fumagillin avoided the loss of surviving weak colonies.
"Honeybee colony collapse due to Nosema ceranae in professional apiaries" Mariano Higes Environmental Microbiology Reports (2009)
A higher virulence of N. ceranae, if conclusively demonstrated to be the case, could account for the unusual reported course of nosema disease in central and southern Europe over the last few years, in which nosema disease is a year-round phenomenon rather than a spring disease, and is associated with higher colony losses (Hatjina and Haristos, 2005; Higes et al., 2005; Imdorf et al., 2006). Colony level infection experiments in the field are now required to demonstrate a causal link between N. ceranae infection and colony collapse.
Nosema ceranae has infected Apis mellifera in Europe since at least 1998 and may be more virulent than Nosema apis
Robert J. Paxton Apidologie 38 (2007) 558–565 Available online