Reader Comments
Post a new comment on this article
Post Your Discussion Comment
Please follow our guidelines for comments and review our competing interests policy. Comments that do not conform to our guidelines will be promptly removed and the user account disabled. The following must be avoided:
- Remarks that could be interpreted as allegations of misconduct
- Unsupported assertions or statements
- Inflammatory or insulting language
Thank You!
Thank you for taking the time to flag this posting; we review flagged postings on a regular basis.
closeNosema / IIV interaction and its correlation with Colony Collapse Disorder (CCD) in bees
Posted by DavidFirth on 15 Jun 2011 at 15:57 GMT
Chalkley et al. attempted to corroborate our findings (Bromenshenk et al., 2010; Iridovirus and Microsporidian Linked to Honey Bee Colony Decline. PLoS ONE 5(10): e13181. doi:10.1371/journal.pone.0013181) that a Nosema / IIV interaction is correlated with Colony Collapse Disorder (CCD) in bees.
Our findings (Bromenshenk et al.) of a Nosema / IIV interaction were based on a multi-year, extensive and intensive survey of over 100 collapsed, non-collapsed and collapsing colonies across the United States.
Chalkley et al. report results from only three (3) samples, which they did not collect themselves; two of which were controls and as such should not have had any Nosema or IIV.
We are glad that Chalkley et al. has recognized the importance of the Bromenshenk et al. findings and the relevance of our publication in PLoS One, and we welcome other more robust tests of our findings that a Nosema / IIV interaction is correlated with Colony Collapse Disorder (CCD) in bees.
We are preparing a more complete response to questions about the proteomics approach used in our paper, which we expect to be publicly available shortly.
RE: Nosema / IIV interaction and its correlation with Colony Collapse Disorder (CCD) in bees
gmknudsen replied to DavidFirth on 23 Jun 2011 at 16:37 GMT
We have waited a week to respond in case the promised more complete response was about to appear (and we look forward to reading it), but we shouldn’t let this issue drag on.
You say that you welcome robust tests of your reported findings, and that is exactly what we seek. We have shown a lack of evidence of iridovirus and nosema in two controls and one collapsing/collapsed, despite your reporting their presence in all three of these samples. Having demonstrated that the small subset of raw data that was eventually released was unreliably interpreted, it is now even clearer that the rest of the data needs to be re-evaluated.
Hence, we renew our request to make available to the community the remaining raw data that you report shows evidence of the presence of iridovirus and nosema. All that is required is the .raw mass spectrometry files, which can be freely uploaded to a site such as Tranche, in the way we did in our manuscript, and as required to publish proteomic results in most journals publishing this type of data. The ECBC report here (http://www.dtic.mil/cgi-b...) contains sufficient information, in combination with the .raw files, for the proteomic community to evaluate these data and database search results.
If the scientific process is allowed to take its course, these data will speak for themselves.
Best regards,
Giselle Knudsen and Robert Chalkley
RE: Nosema / IIV interaction and its correlation with Colony Collapse Disorder (CCD) in bees
jdevans replied to DavidFirth on 29 Jun 2011 at 13:32 GMT
Dr. Firth,
I appreciate your enthusiasm and that of your co-authors, many of whom I consider friends. Nevertheless, concerns over this work have been raised since publication from the angle of
1) biological improbability (the 'presence' of more Nosema species than have been found across all insects previously, the claimed presence of hundreds of other microbes in a host known for having a relatively simple microbiome, and claims of a ubiquitous DNA virus not yet seen by other methods despite strong evidence for other DNA and RNA viruses in bees),
2) stoichiometry (i.e., equal representation of all peptides in the focal species, a putative iridovirus)
3) imprecise methods for each step of the proteomic component from sampling to database searching, despite wide evidence that these steps can give precisely the erratic results many now believe to define this screening (see Foster Mol. Cell Proteomics 2011 and the above paper by Knudsen and Chalkley).
and
4) a persistent promise since last fall that the underlying data will be revealed as a defense against these and other strong critiques.
It is not profitable to critique other scientists and you must realize by now that the main drive to do so is because many of us have ‘seen this movie’ wherein hubris and reluctance to question ones own results can put science in a tailspin. Knudsen and Chalkley worked hard to unearth and reanalyze three samples that were claimed to contain IIV and in each case found a more plausible alternative. This result was found to be convincing by reviewers and PlosONe editors. I would urge you in weeks, not months, to release further raw data from this study if you wish to reverse a growing sense that the main results were a sad, if presumably honest, mistake. Your coauthors and the community deserve a swift resolution of this, and no-one has benefitted from nine months of silence.
Respectfully,
Jay
RE: RE: Nosema / IIV interaction and its correlation with Colony Collapse Disorder (CCD) in bees
Apis_mellifera replied to jdevans on 04 Jul 2011 at 22:03 GMT
Dear Dr. Firth & colleagues,
I must add my voice to that of Dr. Evans and Drs. Chalkley and Knudsen: the continued lack of sharing of your full dataset against all norms and requirements in the field, including those of this journal, suggest that you have something to hide and cast a bad light not only on your own publication but on the whole bee research community. These data should be made available immediately.
Leonard Foster