Free Access
Issue
Apidologie
Volume 30, Number 4, 1999
Page(s) 289 - 292
DOI https://doi.org/10.1051/apido:19990404
Apidologie 30 (1999) 289-292
DOI: 10.1051/apido:19990404

Negative long-term effects on bee colonies treated with oxalic acid against Varroa jacobsoni Oud.

Mariano Higesa, Aránzazu Meanab, Miguel Suáreza and Jesús Llorentea

a  Centro Apícola Regional, Servicio de Investigación Agraria de Castilla-La Mancha, Marchamalo, Guadalajara, Spain
b  Dpto. Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense de Madrid, Avda Puerta de Hierro s/n, 28040 Madrid, Spain

Abstract - Two oxalic acid treatments were given to five colonies in autumn and five colonies in spring. In each treatment, colonies were treated every 7 days for 4 weeks with a 3 % sprayed oxalic acid. Another five colonies in each season served as controls and were sprayed only with water. Efficacy of oxalic acid in autumn was 94 % and in spring was 73 %. A long-term study of the colonies for 3-4 months after the last application of oxalic acid showed a statistically significant negative effect of the acid on brood development. In addition, three queens died in the treated colonies. © Inra/DIB/AGIB/Elsevier, Paris


Key words: Apis mellifera / Varroa jacobsoni / oxalic acid / brood development

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.