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Pathology and Parasitology

Efficacy and safety of Varterminator, a new formic acid medicine against the varroa mite

Eficacia y seguridad del Varterminator, una medicina nueva de ácido fórmico contra el ácaro varroa

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Pages 162-167 | Received 01 Feb 2016, Accepted 23 Jan 2017, Published online: 15 Mar 2017
 

Abstract

A new veterinary medicinal product called Varterminator for varroa mite control has been developed. The medicine is made of a gel containing formic acid (FA) and is able to produce a passive evaporation of FA and to guarantee a high degree of safety for the bee colony. To verify the efficacy of the treatment and the effect on eggs, larvae, adult bees and queens, clinical trials were performed in several apiaries spread throughout Italy, under different climatic and regional conditions. The average acaricide efficacy rate was more than 95%, with a maximum level of 99%. With regard to safety, no adverse reactions were observed on larvae, adult bees and queens when compared to untreated colonies. One adverse reaction was noted, however, a high mortality of eggs. The eggs were quickly replaced by the queen in a few days, without affecting the wellbeing of the colony. The results showed that the acaricide is efficacious and safe for colonies. The medicine can be used with brood, throughout the season of the bee activity. Moreover, the product is ready-to-use, safe for users and suitable for organic farming.

Se ha desarrollado un nuevo producto medicinal veterinario llamado Varterminator para el control del ácaro varroa. La medicina está hecha de gel conteniendo ácido fórmico (AF) y capaz de producir una evaporación pasiva del AF y de garantizar un alto nivel de seguridad para la colmena de abejas. Se han llevado acabo ensayos clínicos para verificar la eficacia del tratamiento y el efecto en los huevos, larvas, abejas adultas y reinas en varios apiarios distribuidos a lo largo de Italia, bajo diferentes condiciones climáticas y regionales. La eficacia media acaricida fue de más del 95%, con un nivel máximo del 99%. Con respecto a la seguridad, no se observaron reacciones adversas en larvas, abejas adultas y reinas cuando se compararon con colonias sin tratar. Sin embargo, se apreció una reacción adversa, una alta mortalidad en los huevos. Los huevos fueron reemplazados rápidamente por la reina en unos pocos días, sin afectar al bienestar de la colmena. Los resultados mostraron que el acaricida es eficaz y seguro para las colonias. La medicina puede usarse con la puesta, a lo largo de la temporada de actividad de las abejas. Además, el producto está listo para usar, es seguro para los usuarios y adecuado para los sistemas orgánicos.

Acknowledgements

A special thanks to Marcello Ortolani and all the beekeepers involved in the field trials for their professionality and availability.

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