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Diagnosis of Varroa jacobsoni in field conditions

Apicoltura ( 10): 23-31

Diagnosis of Varroa jacobsoni in field conditions

The effects of various factors (the apiary, the hive and the physiological stage of the sample) on the diagnosis of Varroa jacobsoni infestations was studied. Examination of 100 honey bee colonies (Apis mellifera) in 5 apiaries, by means of a randomized block scheme, showed that samples should be taken periodically for diagnosis because many factors (climate, management and other uncontrolled conditions) make it difficult to predict infestation.

Accession: 002800747

Related references

Gomez Pajuelo, A.; Molins Marin, J.L.; Perez Garcia, F., 1987: Rapid field diagnosis of Varroa jacobsoni. A frame of sealed brood on the point of hatching is taken from one of the weakest colonies, and 100-300 bees are brushed into a container (after ensuring that the queen is not among them). They are put into a 5-6 litre plastic container with 2 lit...

Accorti, M.; Barbattini, R.; Marchetti, S., 1986: Diagnosis and control of Varroa jacobsoni in the field: a proposal for the unification of methodologies in experimental trials. Standardized methods used in cooperative research on Varroa, carried out by two institutes in Italy and one in the German Federal Republic, are described. They concern the following: (1) collection of mites dying from natural causes; (2) collectio...

Lange, A.B.; Natskii, K.V., 1990: The populational relationship between Varroa jacobsoni Oudm. and honey bees (Apis mellifera L.) and assessment of protection effectiveness against Varroa jacobsoni. Data concerning the life cycle of V. jacobsoni and the population dynamics of the mite during the year were established, including the exponential growth parallel to the growth in population size of juvenile and adult bees during the summer, the s...

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Marcangeli, Jorge Augusto., 2000: Determinant factors of honeybee brood cells invasion by Varroa jacobsoni Distribucion del acaro Varroa jacobsoni en el interior de celdas de cria de la abeja Apis mellifera en el sudeste de la provincia de Buenos Aires, Argentina. Natura Neotropicalis. 1999( ); 301-2: 51-56

Ho, K.K.; Hsu, E.L.; An, J.K., 1980: Study of chemical control of Varroa jacobsoni. 1. Screen tests of miticides on Varroa jacobsoni and toxicity measurement of five miticides on Apis mellifera. A survey conducted in Taiwan showed that all 52 apiaries (of Apis mellifera L.) visited were infested with Varroa jacobsoni Oudm. Tests carried out to evaluate the effectiveness of 5 acaricides against the mite indicated that treatment with 51% co...

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Moretto, G.; Goncalves, L.S.gui.;, D., 1997: Relationship between the infestation rate Varroa jacobsoni in adult bees and the capacity of the workers to remove the mite from their bodies Relacao entre o grau de infestacao causado pela varroatose em abelhas adultas e a capacidade das operarias de se livrarem do Acaro Varroa jacobsoni. A study was made of the correlation between the capacity of the africanized honey bees to relieve themselves of infesting Varroa mites, and the infestation rate of the colony. This study was made with 16 colonies. Varroa females were placed on the...

Eguaras, M.; Oppedisano, M.; Velis, G.; Marcangeli, J.; Romero, JLC., 2001: Reproductive capacity of Varroa jacobsoni, and his relation with some parameters of Apis mellifera colony Capacidad reproductiva de Varroa jacobsoni y su relacion con parametros propios de la colonia de Apis mellifera. Suplemento ao Boletim da Sociedade Portuguesa de Entomologia, 6: 541-546