Kalender next 42tg

Montag Mai 20 - All Day
-i- UNO Weltbienentag 20.05

Event Kalender

Mai 2024
Mo Di Mi Do Fr Sa So
29 30 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31 1 2

Banners

Bienengesundheit

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

Garedew, Assegid et al. (2001): The varroacidal action of propolis: a laboratory assay


The varroacidal action of propolis: a laboratory assay
Assegid GAREDEW, Ingolf LAMPRECHT, Erik SCHMOLZ, Burkhard SCHRICKER


(Received 23 February 2001; revised 21 August 2001; accepted 16 October 2001)

Abstract
– The action of propolis (bee glue) against the ectoparasitic mite
Varroa destructor
Ander-
sonandTruemanhasbeeninvestigatedandshowednarcoticandlethaleffects.Lengthofnarcosisand
rate of mortality depended on the extraction procedure, concentration of propolis and contact time.
Propolis extracted with 70% ethanol was found to be highly toxic, a 10% (w/v) propolis resulting in
100%mortalitywithabriefcontacttimeof5s.Inaddition,theeffectofpropolisonthemetabolicrate
of the mites has been investigated calorimetrically. Even sublethal propolis concentrations without
varroacidal effects and of only short lasting narcotic effects resulted in a significant reduction in the
heat production rate, indicating weakening of the mites.


Varroa destructor / varroatosis / varroacides / propolis / Apis mellifera / calorimetry
Attachments:
FileDescriptionFile sizeDownloads
Download this file (Propolis_treatment_varroa.pdf)Propolis_treatment_varroa.pdf 459 kB1637

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)

Phänologie

aktualisierte Beiträge

Wetter

who is online

Aktuell sind 796 Gäste, 7 Bots und keine Mitglieder online


7 Bots:
3 x bingbot
2 x DotBot
1 x AhrefsBot
1 x SemrushBot