Iridovirus and microsporidian linked to honey bee colony decline.
<h4>Background</h4>In 2010 Colony Collapse Disorder (CCD), again devastated honey bee colonies in the USA, indicating that the problem is neither diminishing nor has it been resolved. Many CCD investigations, using sensitive genome-based methods, have found small RNA bee viruses and the...
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2010
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oai:doaj.org-article:9b675e4dc9fb48d69aa888006f7c6d032021-11-18T07:03:37ZIridovirus and microsporidian linked to honey bee colony decline.1932-620310.1371/journal.pone.0013181https://doaj.org/article/9b675e4dc9fb48d69aa888006f7c6d032010-10-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20949138/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>In 2010 Colony Collapse Disorder (CCD), again devastated honey bee colonies in the USA, indicating that the problem is neither diminishing nor has it been resolved. Many CCD investigations, using sensitive genome-based methods, have found small RNA bee viruses and the microsporidia, Nosema apis and N. ceranae in healthy and collapsing colonies alike with no single pathogen firmly linked to honey bee losses.<h4>Methodology/principal findings</h4>We used Mass spectrometry-based proteomics (MSP) to identify and quantify thousands of proteins from healthy and collapsing bee colonies. MSP revealed two unreported RNA viruses in North American honey bees, Varroa destructor-1 virus and Kakugo virus, and identified an invertebrate iridescent virus (IIV) (Iridoviridae) associated with CCD colonies. Prevalence of IIV significantly discriminated among strong, failing, and collapsed colonies. In addition, bees in failing colonies contained not only IIV, but also Nosema. Co-occurrence of these microbes consistently marked CCD in (1) bees from commercial apiaries sampled across the U.S. in 2006-2007, (2) bees sequentially sampled as the disorder progressed in an observation hive colony in 2008, and (3) bees from a recurrence of CCD in Florida in 2009. The pathogen pairing was not observed in samples from colonies with no history of CCD, namely bees from Australia and a large, non-migratory beekeeping business in Montana. Laboratory cage trials with a strain of IIV type 6 and Nosema ceranae confirmed that co-infection with these two pathogens was more lethal to bees than either pathogen alone.<h4>Conclusions/significance</h4>These findings implicate co-infection by IIV and Nosema with honey bee colony decline, giving credence to older research pointing to IIV, interacting with Nosema and mites, as probable cause of bee losses in the USA, Europe, and Asia. We next need to characterize the IIV and Nosema that we detected and develop management practices to reduce honey bee losses.Jerry J BromenshenkColin B HendersonCharles H WickMichael F StanfordAlan W ZulichRabih E JabbourSamir V DeshpandePatrick E McCubbinRobert A SeccombPhillip M WelchTrevor WilliamsDavid R FirthEvan SkowronskiMargaret M LehmannShan L BilimoriaJoanna GressKevin W WannerRobert A CramerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 10, p e13181 (2010) |
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Medicine R Science Q Jerry J Bromenshenk Colin B Henderson Charles H Wick Michael F Stanford Alan W Zulich Rabih E Jabbour Samir V Deshpande Patrick E McCubbin Robert A Seccomb Phillip M Welch Trevor Williams David R Firth Evan Skowronski Margaret M Lehmann Shan L Bilimoria Joanna Gress Kevin W Wanner Robert A Cramer Iridovirus and microsporidian linked to honey bee colony decline. |
| description |
<h4>Background</h4>In 2010 Colony Collapse Disorder (CCD), again devastated honey bee colonies in the USA, indicating that the problem is neither diminishing nor has it been resolved. Many CCD investigations, using sensitive genome-based methods, have found small RNA bee viruses and the microsporidia, Nosema apis and N. ceranae in healthy and collapsing colonies alike with no single pathogen firmly linked to honey bee losses.<h4>Methodology/principal findings</h4>We used Mass spectrometry-based proteomics (MSP) to identify and quantify thousands of proteins from healthy and collapsing bee colonies. MSP revealed two unreported RNA viruses in North American honey bees, Varroa destructor-1 virus and Kakugo virus, and identified an invertebrate iridescent virus (IIV) (Iridoviridae) associated with CCD colonies. Prevalence of IIV significantly discriminated among strong, failing, and collapsed colonies. In addition, bees in failing colonies contained not only IIV, but also Nosema. Co-occurrence of these microbes consistently marked CCD in (1) bees from commercial apiaries sampled across the U.S. in 2006-2007, (2) bees sequentially sampled as the disorder progressed in an observation hive colony in 2008, and (3) bees from a recurrence of CCD in Florida in 2009. The pathogen pairing was not observed in samples from colonies with no history of CCD, namely bees from Australia and a large, non-migratory beekeeping business in Montana. Laboratory cage trials with a strain of IIV type 6 and Nosema ceranae confirmed that co-infection with these two pathogens was more lethal to bees than either pathogen alone.<h4>Conclusions/significance</h4>These findings implicate co-infection by IIV and Nosema with honey bee colony decline, giving credence to older research pointing to IIV, interacting with Nosema and mites, as probable cause of bee losses in the USA, Europe, and Asia. We next need to characterize the IIV and Nosema that we detected and develop management practices to reduce honey bee losses. |
| format |
article |
| author |
Jerry J Bromenshenk Colin B Henderson Charles H Wick Michael F Stanford Alan W Zulich Rabih E Jabbour Samir V Deshpande Patrick E McCubbin Robert A Seccomb Phillip M Welch Trevor Williams David R Firth Evan Skowronski Margaret M Lehmann Shan L Bilimoria Joanna Gress Kevin W Wanner Robert A Cramer |
| author_facet |
Jerry J Bromenshenk Colin B Henderson Charles H Wick Michael F Stanford Alan W Zulich Rabih E Jabbour Samir V Deshpande Patrick E McCubbin Robert A Seccomb Phillip M Welch Trevor Williams David R Firth Evan Skowronski Margaret M Lehmann Shan L Bilimoria Joanna Gress Kevin W Wanner Robert A Cramer |
| author_sort |
Jerry J Bromenshenk |
| title |
Iridovirus and microsporidian linked to honey bee colony decline. |
| title_short |
Iridovirus and microsporidian linked to honey bee colony decline. |
| title_full |
Iridovirus and microsporidian linked to honey bee colony decline. |
| title_fullStr |
Iridovirus and microsporidian linked to honey bee colony decline. |
| title_full_unstemmed |
Iridovirus and microsporidian linked to honey bee colony decline. |
| title_sort |
iridovirus and microsporidian linked to honey bee colony decline. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2010 |
| url |
https://doaj.org/article/9b675e4dc9fb48d69aa888006f7c6d03 |
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