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Bienengesundheit

... und was die Bienen krank macht, es werden die Verschiedenen Krankheiten der Honigbiene aufgelistet...

Ameisensäure für die Imkerei

oder Seit 2016? FORMIVAR®, ad us. vet., Lösung (Ameisensäure)

Im Anhang die files für die Ameisensäure 85% und dem Liebig Dispenser
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Download this file (Flyer_Liebig_de.pdf)Flyer_Liebig_de.pdf 1246 kB1743
Download this file (Gebrauchsanweisung_Liebig_Dispenser.pdf)Gebrauchsanweisung_Liebig_Dispenser.pdf 1833 kB1963
Download this file (Sicherheitsdatenblatt_FORMIVAR_85_.pdf)Sicherheitsdatenblatt_FORMIVAR_85_.pdfSicherheitsdatenblatt gemäss Art. 53 der ChemV von 18.05.2005 (Stand am 01.12.2010) 181 kB1798

Daisuke TAKAMATSU, Masumi SATO, Mikio YOSHIYAMA (2016): Infection of Melissococcus plutonius clonal complex 12 strain in European honeybee larvae is essentially confined to the digestive tract European foulbrood (EFB)

 

Melissococcus plutonius is an important pathogen that causes European foulbrood (EFB) in honeybee larvae. Recently, we discovered a group of M. plutonius strains that are phenotypically and genetically distinct from other strains. These strains belong to clonal complex (CC) 12, as determined by multilocus sequence typing analysis, and show atypical cultural and biochemical characteristics in vitro compared with strains of other CCs tested. Although EFB is considered to be a purely intestinal infection according to early studies, it is unknown whether the recently found CC12 strains cause EFB by the same pathomechanism. In this study, to obtain a better understanding of EFB, we infected European honeybee (Apis mellifera) larvae per os with a well-characterized CC12 strain, DAT561, and analyzed the larvae histopathologically. Ingested DAT561 was mainly localized in the midgut lumen surrounded by the peritrophic matrix (PM) in the larvae. In badly affected larvae, the PM and midgut epithelial cells degenerated, and some bacterial cells were detected outside of the midgut. However, they did not proliferate in the deep tissues actively. By immunohistochemical analysis, the PM was stained with anti-M. plutonius serum in most of the DAT561-infected larvae. In some larvae, luminal surfaces of the PM were more strongly stained than the inside. These results suggest that infection of CC12 strain in honeybee larvae is essentially confined to the intestine. Moreover, our results imply the presence of M. plutonius-derived substances diffusing into the larval tissues in the course of infection.

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Download this file (78_15-0405.pdf)78_15-0405.pdf 1983 kB2186

Unterkategorien


Faulbrut (Amerikanische Faulbrut) ausgelöst durch die Bakterien Paenibacillus larvae

Sauerbrut (Europäische Faulbrut) ausgelöst durch die Bakterien Melissococcus plutonius
Die Kalkbrut (Ascosphaerose) ist eine Krankheit der Westlichen Honigbiene. Sie wird durch den Pilz Ascosphaera apis verursacht.
 Varroa sensitive hygiene (VSH) is a behavioral trait of honey bees (Apis mellifera) in which bees detect and remove bee pupae that are infested by the parasitic mite Varroa destructor. V. destructor is considered to be the most dangerous pest problem for honey bees worldwide. VSH activity results in significant resistance to the mites.. (wikipedia)

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