Thymol

thymolbehandlung_20170128

In the 1990s, the Bee Research Centre took part in a screening programme testing the potential effectiveness of over 100 essential oils and essential oil components against the varroa mite. Although sage, hyssop and thyme oils proved interesting, only thymol has been used in acaricide products. Thymol treatments require little effort, and there are a variety of preparations on the market. The advantages and drawbacks of thymol use are listed in the articles "Apilife VAR: A new varroacide with thymol as the main ingredient" and "THYMOVAR for Varroa control".

Use of essential oils for the control of Varroa jacobsoni (Oud.) in honey bee colonies (PDF, 1 MB, 20.01.2017)
A. Imdorf, S. Bogdanov, R. Ibáñez Ochoa, N. W. Calderone (1999)

Publication List

Publication List

Publications Fabian Wahl

Ammann J., Bär C., Bütikofer U., Vergères G., Wahl F., Walther B.
Wohin soll die Forschung gehen?
Ars Medici, 3, 2025, 124-126.

Wahl F., Bisig W.
IDF World Dairy Summit 2024 Paris: Highlights und IDF Prioritäten.
In: Liebefelder Milchtagung. 19. November, Publ. Agroscope / HAFL, Bern-Zollikofen (CH). 2024.
other Languages: french

Bérard J., Schori F., Reiche A.-M., Lerch S., Tretola M., Mariotte P., Wahl F., Lüscher A., Kay S.
Models of research and implementation for sustainability in animal nutrition.
In: Regional Forum on Innovations to Support Sustainable Livestock Transformation in the Asia and Pacific Region. 13 November, Publ. FAO, Khon Kaen (TH). 2024.

Wahl F., Pittet P.-A., Bisig W.
IDF World Dairy Summit Chicago.
In: Liebefelder Milchtagung. 28. November, Publ. Agroscope, Bern. 2023, 1-63.
other Languages: french

Wüthrich C., Fan Z., Vergères G., Wahl F., Zenobi R., Giannoukos S.
Analysis of volatile short-chain fatty acids in the gas phase using secondary electrospray ionization high-resolution mass spectrometry.
Analytical Methods, 15, (5), 2023, 553-561.

Nemati G., Romanò A., Wahl F., Berger T., Vazquez Rojo L., Graber H. U.
Bovine Staphylococcus aureus: a European study of contagiousness and antimicrobial resistance.
Frontiers in Veterinary Science, 10, 2023, 1-11.

Wüthrich C., de Figueiredo M., Pimentel K. J., Vergères G., Wahl F., Zenobi R., Giannoukos S.
Breath response following a nutritional challenge monitored by secondary electrospray ionization high-resolution mass spectrometry.
Journal of Breath Research, 16, (4), 2022, 1-12.

Bagnoud M., Baumeyer Brahier A., Douziech M., Riedl W., Wahl F.
Algafeed: on-farm production of protein-rich microalgae for animal feed.
In: Innofood. 20. juin, Publ. Cluster Food & Nutrition, Bulle. 2022, 1.

Petignat-Keller S., Wahl F.
Wenn Ideen zum Produkt reifen - eine Co-Kreation.
Die Grüne, 6, 2022, 13.

Wahl F.
Fostering nutrition research in Switzerland.
Bulletin VSH-AEU, 47, (1), 2021, 13-16.

Apilife VAR: A new varroacide with thymol as the main ingredient (PDF, 103 kB, 20.01.2017)
A. Imdorf, S. Bogdanov, V. Kilchenmann, C. Maquelin (1994)

"THYMOVAR" for Varroa control (PDF, 75 kB, 27.01.2017)
F. Bollhalder (1998)


Although the use of thymol leads to residues in the wax and honey, these are negligible from a toxicological viewpoint. Since about 2008 the use of thymol-based products has been declining in Switzerland, and beekeepers making use of these products have tended to experience greater winter losses than those using e.g. formic acid.

Thymol residues in wax and honey after Apilife VAR treatment (PDF, 757 kB, 14.09.2016)
S. Bogdanov, A. Imdorf, V. Kilchenmann (1998) 

https://www.agroscope.admin.ch/content/agroscope/en/home/themen/nutztiere/bienen/bienenkrankheiten/varroa/varroa-bekaempfung/thymol.exturl.html/aHR0cHM6Ly9pcmEuYWdyb3Njb3BlLmNoL2VuLVVTL1BhZ2UvUH/VibGlrYXRpb25zbGlzdGUvSW5kZXhNaXRhcmJlaXRlcj9hZ3Jv/c2NvcGVJZD0xNzU5MiZpc0RhdGVuUHVibGlrYXRpb25zbGlzdG/U9RmFsc2U=.html