American foulbrood: a review of its biology, diagnosis and control

Hansen, Hans Peter; Brødsgaard, Camilla J.

doi:10.1080/0005772x.1999.11099415

Cited by 165 publications

(136 citation statements)

References 61 publications

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“…This removal of infected larvae is very important and contributes to healthier colonies . Hygienic behaviour is a trait at the colony level (Spivak & Reuter 2001) and breeding of hygienic lines has resulted in bees with increased resistance to AFB infections but thus far no fully AFB-resistant lines have been bred (Hansen & Brødsgaard 1999).…”

Section: Prevention and Controlmentioning

confidence: 99%

The Honeybee Disease American Foulbrood — An African Perspective

et al. 2011

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Sustaining apiculture worldwide has been threatened by bee diseases and unexplained colony losses. African honeybee populations seem healthier and no major losses have been reported despite the presence of all the major pests and diseases. The scattered colonies in the large wild population of the continent might ensure slow pathogen spread and thus protect the unmanaged colonies in comparison with the concentration of colonies in managed apiaries. Beekeeping and trade in bee products is responsible for spreading many diseases throughout the world. The recent outbreak of the bacterial disease American foulbrood (AFB) in South Africa is a matter of great concern. Despite a growing number of apiaries testing positive for AFB, no major colony losses have been reported yet. This could be based on higher disease resistance of African honeybees, but such a trait might not persist if pathogens accumulate in the hives. In the first part of this article we review what is known on the history, biology and epidemiology of AFB as well as the control methods available. We then argue that given the particular context of honeybees in Africa, protection policies need to be put in place to ensure that African honeybees remain healthy.

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Section: Prevention and Controlmentioning

confidence: 99%

The Honeybee Disease American Foulbrood — An African Perspective

et al. 2011

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“…Distinct honeybee (Apis mellifera L.) colonies and lines can possess different levels of resistance to the most serious larval honeybee disease American foulbrood (AFB), caused by a Gram-positive bacterial pathogen Paenibacillus larvae larvae (for reviews see Rothenbuhler, 1958;Spivak and Gilliam, 1998;Hansen and Brødsgaard, 1999). Two mechanisms of AFB resistance are thought to be associated with larval food.…”

Section: Introductionmentioning

confidence: 99%

Identification of honeybee peptide active against Paenibacillus larvae larvae through bacterial growth-inhibition assay on polyacrylamide gel

et al. 2002

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-The inhibition bands showing activity against Gram-positive bacteria were detected by analyses of acidic extracts of honeybee heads, thoraxes, and royal jellies (RJs) using a bacterial growth-inhibition assay on polyacrylamide gel. The presence of antibacterial peptide royalisin and another unknown peptide was found in two detected RJ inhibition bands by N-terminal sequencing. The data suggested that royalisin was the peptide responsible for the activity against Paenibacillus larvae larvae and other tested Gram-positive bacteria. The analyses of RJs collected from individual colonies at two apiaries, one of which showed incidence of American foulbrood, revealed differences in the content of the antibacterial peptide. The results suggest that the differences might be associated with genetic variability between colonies.Apis mellifera / royal jelly / Paenibacillus larvae larvae / American foulbrood / antibacterial peptide

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“…Subsequently, the liquid part was analysed for the presence of spores and giant whips by phase-contrast microscopy. P. l. larvae is characterized by the lack of catalase activity and giant whips occurring during sporulation (Ritter, 1996;Hansen & Brodsgaard, 1999).…”

Section: Introductionmentioning

confidence: 99%

Biochemical characterization of different genotypes of Paenibacillus larvae subsp. larvae, a honey bee bacterial pathogen

Neuendorf

Hedtke

Tangen³

et al. 2004

Microbiology

109

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Paenibacillus larvae subsp. larvae (P. l. larvae) is the aetiological agent of American foulbrood (AFB), the most virulent bacterial disease of honey bee brood worldwide. In many countries AFB is a notifiable disease since it is highly contagious, in most cases incurable and able to kill affected colonies. Genotyping of field isolates of P. l. larvae revealed at least four genotypes (AB, Ab, ab and aB) present in Germany which are genotypically different from the reference strain DSM 7030. Therefore, based on these data, five different genotypes of P. l. larvae are now identified with genotype AB standing out with a characteristic brown-orange and circled two-coloured colony morphology. Analysing the metabolic profiles of three German genotypes (AB, Ab and ab) as well as of the reference strain using the Biolog system, a characteristic biochemical fingerprint could be obtained for each strain. Cluster analysis showed that while genotypes Ab, ab and the reference strain DSM 7030 are rather similar, genotype AB is clearly different from the others. Analysis of all isolates for plasmid DNA revealed two different plasmids present only in isolates belonging to genotype AB. Therefore, genotype AB is remarkable in all aspects analysed so far. Future analysis will show whether or not these differences will expand to differences in virulence.

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American foulbrood: a review of its biology, diagnosis and control

Cited by 165 publications

References 61 publications

The Honeybee Disease American Foulbrood — An African Perspective

The Honeybee Disease American Foulbrood — An African Perspective

Identification of honeybee peptide active against Paenibacillus larvae larvae through bacterial growth-inhibition assay on polyacrylamide gel

Biochemical characterization of different genotypes of Paenibacillus larvae subsp. larvae, a honey bee bacterial pathogen

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