Free Access Observations on Apis cerana colonies surviving from Thai Sacbrood Virus infestation p. 169 L.R. Verma, B.S. Rana and S. Verma DOI: https://doi.org/10.1051/apido:19900301 AbstractPDF (402.5 KB)
Free Access Heritabilities for several colony traits in the honeybee (Apis mellifera carnica) p. 175 K. Bienefeld and F. Pirchner DOI: https://doi.org/10.1051/apido:19900302 AbstractPDF (533.5 KB)
Free Access Cornual secretion on the endophallus of the honeybee drone (Apis mellifera L) p. 185 G. Koeniger, M. Wissel and W. Herth DOI: https://doi.org/10.1051/apido:19900303 AbstractPDF (473.2 KB)
Free Access Preference for drone brood cells by Varroa jacobsoni Oud in colonies of Apis mellifera carnica p. 193 S. Fuchs DOI: https://doi.org/10.1051/apido:19900304 AbstractPDF (405.7 KB)
Free Access Congregation of Apis cerana indica Fabricius 1798 drones in the canopy of trees in Sri Lanka p. 201 R.W.K. Punchihewa, N. Koeniger and G. Koeniger DOI: https://doi.org/10.1051/apido:19900305 AbstractPDF (622.2 KB)
Free Access Chalkbrood (Ascosphaera aggregata) resistance in the leafcutting bee (Megachile rotundata). I. Challenge of selected lines p. 209 W.P. Stephen and B.L. Fichter DOI: https://doi.org/10.1051/apido:19900306 AbstractPDF (674.2 KB)
Free Access Chalkbrood (Ascosphaera aggregata) resistance in the leafcutting bee (Megachile rotundata). II. Random matings of resistant lines to wild type p. 221 W.P. Stephen and B.L. Fichter DOI: https://doi.org/10.1051/apido:19900307 AbstractPDF (556.6 KB)
Free Access Isolation and characterization of Bacillus coagulans associated with half-moon disorder of honey bees p. 233 J.D. Vandenberg and H. Shimanuki DOI: https://doi.org/10.1051/apido:19900308 AbstractPDF (683.5 KB)
Free Access Effect of amitraz treatments on honey bees and on the honey bee tracheal mite p. 243 J.D. Vandenberg and H. Shimanuki DOI: https://doi.org/10.1051/apido:19900309 AbstractPDF (285.1 KB)
Free Access Nachweis und Herkunft von Abscisinsäure und Prolin in HonigDetection and origin of abscissic acid and proline in honey p. 249 J. Lipp DOI: https://doi.org/10.1051/apido:19900310 AbstractPDF (694.9 KB)
Free Access A comparison between the efficiency of summer treatments using formic acid and Taktic® against Varroa jacobsoni in beehives p. 261 A. Lupo and D. Gerling DOI: https://doi.org/10.1051/apido:19900311 AbstractPDF (440.5 KB)
