Free Access Biometrische Unterscheidung zwischen Apis mellifera carnica Poll und allen anderen Rassen von Apis mellifera LDiscrimination of Apis mellifera carnica Poll from the other races of Apis mellifera L p. 97 D. Kauhausen-Keller DOI: https://doi.org/10.1051/apido:19910201 PDF (534.2 KB)
Free Access Aging and transcriptional activity in worker honey bees p. 105 D.W. Severson, J.L. Williamson and J.M. Aiken DOI: https://doi.org/10.1051/apido:19910202 PDF (357.5 KB)
Free Access Degradation of oxytetracycline in honey as measured by fluorescence and liquid chromatographic assays p. 109 R.J. Argauer and W.A. Moats DOI: https://doi.org/10.1051/apido:19910203 PDF (369.9 KB)
Free Access Incidence and effects of four parasites in natural populations of bumble bees in Switzerland p. 117 J.A. Shykoff and P. Schmid-Hempel DOI: https://doi.org/10.1051/apido:19910204 PDF (545.1 KB)
Free Access Geographical distribution, levels of infestation and population density of the mite Euvarroa sinhai Delfinado and Baker (Acarina: Mesostigmata) in Apis florea F colonies in Iran p. 127 M.S. Mossadegh DOI: https://doi.org/10.1051/apido:19910205 PDF (352.8 KB)
Free Access Effective control of varroatosis using powdered thymol p. 135 F. Chiesa and M. D'Agaro DOI: https://doi.org/10.1051/apido:19910206 PDF (630.8 KB)
Free Access Control of Varroa jacobsoni in honey-bee colonies in Yugoslavia by fumigation with low doses of fluvalinate or amitraz p. 147 J.M. Kulinčević, T.E. Rinderer, V.J. Mladjan and S.M. Buco DOI: https://doi.org/10.1051/apido:19910207 PDF (471.1 KB)
Free Access Immunomodulatory action of propolis. Influence on anti-infectious protection and macrophage function p. 155 V. Dimov, N. Ivanovska, N. Manolova, V. Bankova, N. Nikolov and S. Popov DOI: https://doi.org/10.1051/apido:19910208 PDF (457.8 KB)
