Quite a number of you have sent me the recent
New York Times article on the discovery of the cause of colony collapse disorder or CCD. Firstly, thanks to everyone who thought to send it in; I try to keep up on the news, but there is quite a bit of it. By sharing any beekeeping related tidbits you run across you not only help me keep up, but let me know what kind of things you are interested in.
I like that. I’d also like to share my interpretation of the paper and the reaction that followed.
So, as seems to be the norm in the news, the story has come across a little differently than it was originally intended. The title of the NYT article says it all: Scientists and Soldiers Solve a Bee Mystery. While I understand their enthusiasm, the
actual research article on PLoS ONE makes no such claim. Rather, their research points to the combination of
Nosema ceranae and an Invertebrate Iridescent Virus (IIV) as the proverbial straw that broke the camels back, NOT the exclusive causative agent of CCD.
In their relative small scale study (41 colonies) they found a statistically significant correlation between colonies suffering from CCD and a co-infection by
nosema ceranae and IIV. The combination of both
N. ceranae and IIV type 6 was detected in 100% of the collapsed or failing colonies in a small scale study done in 2006. Similarly, follow up studies on an observation hive undergoing collapse in 2007 and 9 colonies in Florida in 2008 showed that the combination was present in all colonies that collapsed.
Even with such a small sample size, such a strong connection is hard to ignore, but there is a fly (bee?) in the ointment for anyone who would like to believe that they found the
one true cause of CCD.