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Distribution and transmission of American foulbrood in honey bees

Lindström, Anders (2006). Distribution and transmission of American foulbrood in honey bees. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2006:22
ISBN 91-576-7071-4
[Doctoral thesis]

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Abstract

The distribution of Paenibacillus larvae spores, the causative agent of American foulbrood, was studied on three different levels in the honey bee system; the apiary level, the colony level and the individual honey bee level. The increased understanding of spore distribution has been used to give recommendations regarding sampling of adult honey bees. The vertical transmission of P. larvae spores through natural swarms has been described for the first time and artificial swarming as a method for control of American foulbrood have been evaluated. The results demonstrated that there is no practical difference in spore load between supers and brood chambers, and that the spore load in samples of adult honey bees on the different levels correspond to the clinical disease status of the colony. The study on individual bees showed that spores are unequally distributed among the bees and that as more bees get contaminated each positive bee also contains more spores. This may present a problem when sampling from colonies with low levels of clinical disease, although the study on colony and apiary level showed no false negatives. A model for calculating the number of bees that needs to be sampled to detect P. larvae in a composite sample of adult bees, given certain detection levels and proportions of positive honey bees in the sample, was developed The swarm study demonstrated vertical transmission of P. larvae spores. Furthermore, the artificial swarm study showed that single and double shaking are equally effective treatment methods, and that the original disease status is of little importance for the spore load decrease.

Authors/Creators:Lindström, Anders
Title:Distribution and transmission of American foulbrood in honey bees
Year of publishing :March 2006
Volume:2006:22
Number of Pages:28
Papers/manuscripts:
NumberReferences
ALLLindström, A. & Fries, I 2005. Sampling of adult bees for detection of American foulbrood (Paenibacillus larvae subsp. larvae) spores in honey bee (Apis mellifera) colonies. Journal of Apicultural Research, 44, 82-86. Lindström, A. 2006. Distribution of American foulbrood (Paenibacillus larvae) spores among adult honey bees (Apis mellifera). Submitted manuscript. Fries, I., Lindström, A. & Korpela, S. 2006. Vertical transmission of American foulbrood (Paenibacillus larvae) in honey bees (Apis mellifera). Veterinary Microbiology, in press. Lindström, A. 2006. Control of American foulbrood (Paenibacillus larvae) in honey bees (Apis mellifera) using artificial swarming. Submitted manuscript.
Place of Publication:Uppsala
ISBN for printed version:91-576-7071-4
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L72 Pests of animals
L Animal production > L01 Animal husbandry
Subjects:Not in use, please see Agris categories
Agrovoc terms:apis mellifera, honey bees, apiculture, bacillus larvae, foul brood, disease transmission, epidemiology, sampling
Keywords:Apis mellifera, honey bee pathology, epidemiology, shaking, evolutionary epidemiology, foulbrood, AFB, adult bee sampling, transmission
URN:NBN:urn:nbn:se:slu:epsilon-976
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-976
ID Code:1053
Department:(NL, NJ) > Dept. of Entomology
Deposited By: Anders Lindström
Deposited On:08 Mar 2006 00:00
Metadata Last Modified:02 Dec 2014 10:09

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