Volume 26, Number 5, 1995
|Page(s)||415 - 429|
The resistance of Varroa jacobsoni Oud to pyrethroids: a laboratory assayN. Milani
Dipartimento di Biologia applicata alla Difesa delle Piante, Udine University, Via delle Scienze, 208, I 33100 Udine, Italy
Abstract - A bioassay has been developed to assess the susceptibility of Varroa mites to fluvalinate, flumethrin and acrinathrin. No significant differences were found among groups of mites from the same origin but from different brood stages (capped larvae, pupae with white eyes, pupae with dark eyes and white or pale bodies), while a rather variable response was observed when mites from adult bees were assayed. The LC50 of mites from areas where treatments with fluvalinate are no longer effective was about 25-50 times higher than that of susceptible mites; an even larger increase in the LC95 was found. The LC50 of flumethrin and acrinathrin on mites surviving Apistan treatments increased 10-60 times.
Key words: pyrethroid / Varroa jacobsoni / resistance / laboratory assay
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.