INVESTIGADORES
EGUARAS Martin Javier
artículos
Título:
Rotenone for Varroa Destructor Control: Effectiviness in Field Trials
Autor/es:
MARTIN JAVIER EGUARAS; PALACIO, A; HOYO, M.; M.BENAVENTE,; G.VELIS,; I.FLORIS,
Revista:
BIOPESTICIDE INTERNATIONAL
Editorial:
Opender Koul
Referencias:
Año: 2005 vol. 1-2 p. 104 - 108
Resumen:
ABSTRACT Two field trials were performed in an experimental apiary of Apis mellifera L.
Langstroth hives in Miramar (Argentina) during spring (Sept.-Nov. 2001) and autumn/winter
(Jun-Jul 2002), to evaluate the effectiveness of rotenone impregnated in polyvinyl chloride strips
against Varroa destructor (Anderson & Trueman). Colonies were standardized for consistency of
adult bee population, brood combs and food storage. In spring, a group of 10 colonies received
1.2 g of rotenone/hive (0.6 g/strip). Another group of 10 colonies received 0.8 g of rotenone/hive
(0.4 g/strip). Five colonies were left untreated. In autumn/winter, a group of 10 colonies received
0.8 g of rotenone/hive, while 7 colonies were left untreated. During the assay, female adult mites
collected at the bottom of each hive were counted three times per week. After twenty days, all
strips were removed and fluvalinate and oxalic acid miticides were applied, to determine the
mites remaining in each hive. Rotenone effectiveness was evaluated by the percent efficacy (E%)
and the percent control (C%), according to Abbotts formula. Efficacies of 79.2 and 82.7 per cent
for the spring and autumn/winter treatments, respectively, were observed. Bee mortality ranged
between 10 and 20 per cent. A single treatment of 0.8 g of rotenone/hive was enough to control
Varroosis and represents a promising alternative for beekeepers.