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 Hassan-Roland Nasser

Cardoso Moreira Waldburger T., Anken T., Cockburn M., Walter A., Hatt M., Chiang C., Nasser H.-R.
Automated irrigation of apple trees based on dendrometer sensors.
Agricultural Water Management, 311, 2025, Article 109398.

Cardoso Moreira Waldburger T., Walter A., Cockburn M., Nasser H.-R., Monney P., Hatt M., Anken T.
Dendrometer as a water stress indicator for apple trees.
Agricultural Water Management, 309, 2025, Article 109326.

Rey S., Nasser H.-R., Cockburn M.
Evaluation of shelter design on equine rhythmicity.
In: 75th Annual Meeting of the European Federation of Animal Science. 1-5 September, Publ. EAAP, Florence (IT). 2024, 230.

Cardoso Moreira Waldburger T., Anken T., Walter A., Nasser R., Monney P., Cockburn M.
Growing cocoa in semi-arid climate and the rhythmicity of stem growth and leaf flushing determined by dendrometers.
Heliyon, 10, 2024.

Rey S., Nasser R., Cockburn M.
Effect of sampling rate and data source on rhythmicity computation.
In: 13th International Conference on Methods and Techniques in Behavioral Research. 15 - 17 May, Publ. Noldus Information Technology, Aberdeen (GB). 2024, 482-483.

Rey S., Nasser R., Cockburn M.
Rhythmicity as a welfare indicator – looking into the effect of extrinsic and intrinsic motivation in group housed horses.
In: 13th International Conference on Methods and Techniques in Behavioral Research. 15 - 17 May, Publ. Noldus Information Technology, Aberdeen (GB). 2024, 332-336.

Schneider M., Umstatter C., Nasser H.-R., Gallmann E., Barth K.
Effect of the daily duration of calf contact on the dam's ultradian and circadian activity rhythms.
JDS Communications, 51, (5), 2024, 457-461.

Sax M., Stoop R., Nasser R., Seatovic D., Keel S., Lehrmann A., Höfer T., Anken T.
Broad-leaved dock control by unmanned aerial vehicles: What image quality is needed for a plant detection?
In: 80th International Conference on Agricultural Engineering. 10 - 11 November, Publ. VDI Wissensforum, Hannover. 2023, 505-512.

Schneider M., Umstätter C., Nasser H. R., Gallmann E., Barth K.
Vorläufige Ergebnisse zum Einfluss der muttergebundenen Kälberaufzucht auf die ultra- und circadiane Aktivitätsrhythmik von Milchkühen.
In: One step ahead - einen Schritt voraus. 7. März - 10. März, Publ. FiBL, Frick (CH). 2023, 454-455.

Hiltebrand C., Roig-Pons M., Baumgartner M., Cockburn M., Doetterl S., Bachmann I., Keller T., Briefer S., Würbel H., Gmel A., Pauler C., Schneider M. K., Nasser R.
Laufende Versuche auf Agroscope-Forschungsterrain St.Aubin.
In: Jeudi au Haras. 20. Juli, Avenches. 2023, 1.
other Languages: french

Schneider M., Umstätter C., Nasser H. R., Gallmann E., Barth K.
Erste Untersuchungen zum Einfluss der muttergebundenen Kälberaufzucht auf die ultra- und circadiane Aktivitätsrhythmik von Milchkühen.
In: 16. Wissenchaftstagung Ökologischer Landbau. 8. März, Publ. FiBL, Frick (CH). 2023.

Nasser H. R., Schneider M., Stachowicz J., Umstätter C.
digiRhythm: Analyzing Animal's Rhythmicity.

Stachowicz J., Nasser H. R., Adrion F., Umstätter C.
Can we detect patterns in behavioral time series of cows using cluster analysis?
Journal of Dairy Science, 105, (12), 2022, 1-11.

Stachowicz J., Nasser R., Adrion F., Umstätter C.
Zeigen Milchkühe individuelle Tagesmuster bei der Nutzung von Funktionsbereichen im Stall?
In: 53. Internationale Arbeitstagung Angewandte Ethologie bei Nutztieren. 25.-26. November, Publ. Deutsche Veterinärmedizinische Gesellschaft e.V. (DVG), Online. 2021.

Stachowicz J., Adrion F., Nasser R., Umstätter C.
Detecting behavioural patterns of cows using an automated tracking system.
In: 72nd Annual Meeting of the European Federation of Animal Science. 30. August, Publ. EAAP, Davos (CH). 2021, 385.

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/c2NvcGVJZD0yMTU4MSZpc0RhdGVuUHVibGlrYXRpb25zbGlzdG/U9RmFsc2U=.html