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Year 2015, Volume 49, Issue 4
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Transformations of life cycles in the evolutionary history of trypanosomatids. Macrotransformations. P. 233-256.
The review concerns analysis of life cycle macrotransformations in the evolutionary history of trypanosomatids. The term "macrotransformations" stands for evolutionary processes leading to the establishment of heteroxenous and secondary homoxenous life cycles within Trypanosomatidae. There were three direct macrotransformations in the evolution of the group resulting in the rise of heteroxenous genera Leishmania, Trypanosoma and Phvtomonas, and one case of reverse macrotransformation in trypanosomes of T. (b. ) brucei group. The issues of the origin, diversity and phylogeny of taxa whose emergence resulted from macrotransformations of life cycles of homoxenous trypanosomatids.
in Russian
The description of Myxobolus pelecicola sp. nov. (Myxozoa: Myxobolidae) from Pelecus cultratus (Cypriniformes, Cyprinidae). P. 257-263.
Morphological study of myxosporean parasites Myxobolus pelecicola sp. n. from Pelecus cultratus (L., 1758), is presented. Presporogenic stage not observed. Polysporous, ellipsoidal plasmodia up to 1.2 mm in length and 0.1 to 0.4 mm in width develop in the skeletal musculature. Mature spores elongate oval or oval form in frontal view, lens-shaped in sutural view. Length of spores 16.5 ±0.83 (14.9—18.0), width 12.1 ± 0.63 (11.6—13.3) (n = 50), thickness 7.8 ± 0.3 (7.4—8.3) µm (n = 10). Polar capsules pyriform, unequal, length of large 8.0 ± 0.44 (7.5—8.8), small 7.6 ± 0.26 (7.2—7.8), width of large 4.5 ± 0.22 (4.2—4.7), small 4.0 ± 0.21 (3.8—4.3) µm. Five to 6 distinct filament coils oriented obliquely to capsule length, found in polar capsule. The length of extruded (in water) filament up to 130 µm. Large, but indistinct triangular intercapsular appendix present in spores. Single rodlet inclusion is very often observed in the posterior part of spore. Mucous envelope is absent. The type host of Myxobolus pelecicola sp. n. is sabrefish Pelecus cultratus (L., 1758). Type locality: Finnish Bay (60°05" N 29°55' E) and Ladoga lake (60°07' N 32°19' E), Russia.
in Russian
Anonchocephalus oligorhis sp. nov. (Cestoda: Bothriocephalidea) From ophidiformes fishes of the Atlantic Ocean. P. 264-272.
In presence article new species of genus Anonchocephalus Riggenbach Lühe, 1902 parasitazing on Hoplobrotula gnathopus Regan, 1921 from the south-eastern part of Atlantic Ocean is described. The morphometric analysis of species of genus Anonchocephalus is made, a description of new species is provided with emended of generic diagnosis.
in Russian
Questing behavior of hard ticks (Ixodidae) in ontogenesis. P. 273-288.
Literary and own data on questing behavior of larvae, nymphs, and adults in main genera of hard ticks are analyzed. Evolutionary patterns of this behavior and the role of different life stages in this process are discussed.
in Russian
Fleas (Siphonaptera) of mammals and birds in the Great Caucasus. P. 289-303.
There are 116 species of fleas in the territory of the Great Caucasus. 21 species are parasites of birds, others are the fleas of mammals. Among 41 genera of Caucasus' fauna only Caenopsylla, Phaenopsylla and Araeopsylla are absent in the Great Caucasus. There are 11 endemic species. Fleas of 66 species are distributed along all mountain system. Parasites of some birds and carnivorous mammals, insectivores and rodents live from lowlands till highlands. Some species are living at the forest altitudinal belt, others prefer the foothills and the mid-height areas; they are absent at the highlands. Their hosts may live at all longitudinal belts; the distribution of other species is limited to lowlands in accordance with distribution of their main hosts.
in Russian
New data on bird helminths in Mongolia. P. 304-308.
For the first time the data on helminths in piscivorous birds (the great cormorant and the Mongolian gull) in Mongolia were obtained. Surveys yielded 11 species (Cestoda — 2, Trematoda — 6, Nematoda — 3). The cormorant hosted 5 helminth species, the herring gull — 6 species.
in Russian