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Nosema ceranae


Nosema: Part 7C — The Prevention of Dysentery

Contents Review.. 1 Balancing moisture elimination and heat loss. 2 Broodrearing in the winter cluster. 3 So let’s do the arithmetic!. 5 Practical applications. 5 Optimal Cluster size. 5 Winter stores ― honey and beebread. 8 Hive placement. 8 Hive insulation. 9 Hive ventilation. 10 Literature cited. 11 Nosema and Dysentery: 7c The Prevention of […]

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The Causes of Dysentery in Honey Bees:  Part 2

Contents The bees’ need for water. 1 Water and the winter cluster. 1 Water Balance. 2 Water homeostasis and buffering in the winter cluster. 3 Water in the gut. 3 Atmosphere and Humidity within the winter cluster. 3 Evaporation via respiration. 5 Defecation/Dysentery. 6 Literature cited. 8     Nosema and Dysentery: 7b The Causes […]

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The Nosema Problem Part 5: Monitoring and Disinfection

Contents What the beekeeper can do. 1 seasonality. 2 detection and Sampling. 3 Queens And Nosema. 6 Deadout equipment. 7 citations and notes. 8   Nosema and dysentery: 5 Monitoring and Disinfection First published in ABJ October 2019 Randy Oliver ScientificBeekeeping.com Some beekeepers are concerned about the current unavailability of fumagillin. Although the Canadians are […]

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The Causes of Dysentery in Honey Bees — Part 1

Contents Why would a colony exhibit signs of dysentery?. 3 honeydew.. 4 Microbial dysbiosis or parastism.. 5 The link between pollen and nosema. 7 How about those “winter bees”?. 8 Literature cited. 10     Nosema and Dysentery: 7a The Causes of Dysentery in Honey Bees, Part 1 First published in ABJ December 2019 Randy Oliver […]

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The Nosema Problem Part 6: Treatment

Contents First a return to queens. 1 Treatments for nosema. 2 fumagillin. 3 Alternative treatments. 3 What else is on the market?. 6 Nozevit®. 6 Hive alive®. 9 Acids in syrup. 9 Possibilities on the radar. 9 What if you don’t want to treat?. 9 citations and notes. 10   Nosema and Dysentery: 6 Treatment […]

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It’s “Common Knowledge” that Nosema Causes Dysentery… But is it actually true?

Contents What is dysentery?. 4 So why does everyone think that nosema causes dysentery?. 7 The sad part. 7 Nosema apparently does not cause dysentery. 7 next. 9 citations and notes. 9   Nosema and Dysentery: 1 It’s “Common Knowledge” that Nosema Causes Dysentery… But is it actually true? First published in ABJ May 2019 […]

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The Seasonality of Nosema Ceranae

First published in: American Bee Journal, April 2015

The Seasonality of Nosema Ceranae Randy Oliver ScientificBeekeeping.com First Published in ABJ in April 2015 Nosema apis has long been known to cause disease primarily during winter and spring. Many misinterpreted Dr. Mariano Higes’ finding that one could detect spores of N. ceranae throughout the year [1] as indicating that infection was no longer seasonal. […]

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“Fried Eggs” Identified!

“Fried Eggs” Identified! Randy Oliver ScientificBeekeeping.com First Published in ABJ in Feb 2012 I mentioned in my previous article that I’ve been seeing an unidentified organism that looked like “fried eggs”  in the guts of bees from my operation in the California foothills (Figure 1).  I sent out requests to a number of researchers for […]

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Sick Bees Part 17b: Nosema – The Smoldering Epidemic

First published in: ABJ April 2012

The Scientific Method Effect of the Invasion Why Would Nosema ceranae Not Cause Problems? Understanding Nosema Understanding the Honey Bee Superorganism Nosema and Energy Metabolism Nosema and Protein Metabolism References Sick Bees 17: Nosema—the Smoldering Epidemic Part B First published in ABJ April 2012 Randy Oliver ScientificBeekeeping.com You may have noticed that I’m doing a […]

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Sick Bees – Part 17b: Nosema – The Smoldering Epidemic

First published in: American Bee Journal, April, 2012

Sick Bees 17: Nosema The Smoldering Epidemic Part B First published in ABJ April 2012 Randy Oliver ScientificBeekeeping.com   The Scientific Method Effect of the Invasion Why Would Nosema ceranae Not Cause Problems? Understanding Nosema Understanding the Honey Bee Superorganism Energy and Protein Metabolism References You may have noticed that I’m doing a sort of […]

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Sick Bees 17A: Nosema – The Smoldering Epidemic

First published in: American Bee Journal, March 2012

Sick Bees 17a: Nosema—the Smoldering Epidemic Randy Oliver ScientificBeekeeping.com First published in ABJ in March 2011   The “Invisible” Infection Something Changed This Decade Historical Prevalence of Nosema Was Nosema ceranae a Game Changer? References The latest National Honey Bee Diseases Survey found that as many as seven out of ten U.S. colonies were infected […]

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Sick Bees – Part 16: The “Quick Squash” Method for Determining Nosema Prevalence in a Colony

Infection Prevalence Sequential Sampling A Neat Little Shortcut Validation Summary (completely subject to revision) More Details Next Month Acknowledgements References 2019 Quick Nosema Prevalence Assessment Method First published in ABJ February 2012 Updated March 13, 2019 Randy Oliver Since the discovery of Nosema ceranae, I and many other beekeepers and researchers have been frustrated by […]

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Sick Bees – Part 15: An Improved Method for Nosema Sampling

Author’s Note Samples from Within the Hive Soundbite Science Infection Rate So How Did We Get on the Wrong Track? How to Determine the Colony Infection Rate So What if I Count the Number of Infected Bees out of 10? An Assessment of Our Situation One HUGE Assumption Validation of the Method Update Sequential Sampling […]

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Sick Bees – Part 14: An Update on the “Nosema Cousins”

Contents Worldwide Status and Distribution Ceranae vs. apis Coinfection Seasonality Sample Interpretation What if You’re Dealing with N. apis? Seasonality Recommendations Acknowledgements References Sick Bees 14: An Update on the “Nosema Cousins” First published in ABJ December 2011 Randy Oliver ScientificBeekeeping.com In my last article, I described how to quickly sample for nosema.  So what […]

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Sick Bees – Part 13: An Update on the “Nosema Cousins”

CONTENTS Worldwide Status and Distribution Ceranae vs. apis Coinfection Seasonality Sample Interpretation What if You’re Dealing with N. apis? Seasonality Recommendations Acknowledgements References Randy Oliver ScientificBeekeeping.com In my last article, I described how to quickly sample for nosema.  So what do the spore counts actually mean as far as colony health is concerned?  I wrote […]

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