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Obukhov, M. L. 1980. Kleshch Varroa i khishchnie chlenistonogie. [Varroa mite and predatory arthropods.] Pchelovodstvo 1980(10):24.
Obukhov, M. L. 1981. Murav’i i pcheli. [Ants and bees.] Pchelovodstvo 1981(9):17-18.
Oliver, J. H. Jr., Pound, J. M., Severino, G. 1985. Evidence of a juvenile-hormone-like compound in the reproduction of Dermanyssus gallinae (Acari: Dermanyssidae). J. Med. Entomol. 22:281-286.
Okada, I. 1990. A book on the Japanese honeybee. Tamagawa Univ. Press., Tokyo. Japanese; Engl. Summary.
Oku, K., Hara, N., Sano, H. 1983. Occurrence of wing abnormality in honey bees. Honeybee Science 4:109-110. (Japanese; Engl. Summary.)
Olsson, J. 1992. Honey bee disease in south India. Beekeeping and Development 23:6.
Omholt, S. W., Crailsheim, K. 1991. The possible prediction of the degree of infestation of honey bee (Apis mellifera) colonies by Varroa jacobsoni Oud. by means of its natural death rate: a dynamic model approach. Norwegian J. Agric. Sci. 5(4):393-400.
Omholt, S.W., Hagen, A., Emholdt, O., Rishovd, S. 1995. A laboratory hive for frequent collection of honeybee eggs. Apidologie 26: 297-304.
Örösi-Pál, Z. 1934. Experiments on the feeding habits of the Acarapis mites. Bee World 15:93-94.
Örösi-Pál, Z. 1935. [Find title.--tracheal mites preferentially infest young bees.] Z. Parasitenk 7:401-407.
Otis, G. 1986. [Find Title--re poor wintering of mite infested bees.] Canadian Beekeeping 12(10):231-232.
Otis, G. W. 1990. Results of a survey on the economic impact of tracheal mites. Amer. Bee J. 130(1): 28-41.
*Otis, G. W., Bath, J. B., Ramirez B., W. 1988. Have Africanized bees brought honey-bee tracheal mites to Costa Rica? In: Africanized Honey bees and bee mtes. (Needham, G. R., Page, R. E., Delfinado-Baker, M., Bowman, C. E., eds.) John Wiley, New York, 541-545.
Otis, G. W., Bath., J. B., Randall, D. L., Grant, G. M. 1988. Studies of the honey bee tracheal mite (Acarapis woodi) (Acari: Tarsonemidae) during winter. Can. J. Zool. 66: 2122-2127.
Otis, G. W., Grant, G. M., Randall, D. L., Bath, J. B. 1986. Summary of the tracheal mite project in New York. Proc. Honey Bee Tracheal Mite (Acarapis woodi R.) Sci. Symp., Amer. Assoc. Prof. Apic. and Can. Assoc. Prof. Apic., 22-30.
Otis, G. W., Scott-Dupree, C. D. 1992. Effects of Acarapis woodi on overwintered colonies of honey bee (Hymenoptera: Apidae) in New York. J. Econ. Entomol. 85(1):40-46.
Otten, C. 1991. Factors and effects of a different distribution of Varroa jacobsoni between adult bees and bee brood [summary]. Apidologie 22(4): 465-467.
Otten, C. 1991. Vergleichende Untersuchungen zum Populationswachstum von Varroa jacobsoni Oud. In Volkern von Apis mellifera unterschiedlicher geographischer Herkunft. PhD thesis; Institut für Bienenkunde (Polytechnische Gesellschaft), Oberusel, Fachbereich Biologie der J. W. Goethe-Universität, Frankfurt am Main, Germany; 206 pp.
Otten, C., Fuchs, S. 1990. Saisonale Unterschiede im Reproduktionsverhalten von Varroa jacobsoni in Völkern der Rassen A. mellifera carnica, A. m. ligustica und A. m. mellifera. Apidologie 21: 367-368.
Oudemans, A. C. 1904. Acarologische Aanteekeningen. XII. Entomol. Ber. Uitgegeven Door Ned Entomol. Verh. 1:160-164. (Anderson 1994, Apidol. 25:421)
Oudemans, A. C. 1904. On a new genus and species of parasitic acari. Notes from Leyden Museum 24: 216-222. (Colin 90, JAE 110:25)
