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I. A. Akimov and O. P. Korzh

Ecological Characteristics of Varroa destructor (Parasitiformes, Varroidae) and Its Environmental Capacity as a Key Factor for Development of Varroosis Panzootia. Akimov I. A., Korzh O. P. - By means of formalized schematic models of relationship with hosts the varroa mite uniqueness as a parasite is shown. The life cycle of this species requires the change of a host species at different stages of their development and physiological states. Thus the mite parasitizes not only a separate bee but a whole hive. The fact that the whole hive but not a single bee dies during varroosis development supports this idea. The impetus for this type of parasitism is the relative constancy of the environment in the hive supported by bees even in winter. Exactly this fact causes high pathogenicity of the varroa for the honey bee and its control complexity.

Open access

A. P. Korzh and V. Y. Zadorozhnyaya

In blood of frogs in two of seven studied biotopes the presence of the genus Hepatozoon representatives was revealed. Morphometric parametres allowed defining a specific accessory of the revealed haemoparasite Hepatozoon in a blood channel of village Malozaharino frogs which were closest to the species H. magna (Grassi et Feletti, 1891) Labbe, 1899