The theory of connections of feeding types and digestion of bloodsucking arthropods with their ability to be specific vectors of transmissive diseases agents. P. 3-7.
An attempt has been made to relate the ability of bloodsucking arthropods to be specific vectors of different groups of agents to such properties of digestive system of blood-suckers as the type of food consumption on larval and imaginal phases, composition of food consumed by larva and imago, structure of intestinal epithelium in adult arthropods and speed of blood digestion process.
in Russian
Ultrafine structure of Malpighian tubes of Diptera-haematophages (Diptera). P. 8-13.
The ultrastructure of Malpighian tubes of 5 species of bloodsucking Diptera was studied: Culicoides pulicaris, Tabanus bromius, Hybomitra schineri, Haematopota pluvialis and Stomoxys calcitrans. The Malpighian tubes of the above species include the cells of two types. The most abundant cells of the 1st type contain many spherical inclusions which represent deposits of mineral compounds. The microvilli of the 1st type cells always contain mitochondria. Cells of the 2nd type are characterized by a smaller size, their microvilli lack mitochondria and no sphere crystals are observed in cytoplasm. Differences in the ultrastructure of epithelial cells of Malpighian tubes were found out.
in Russian
Revision of the family Ischnopsyllidae (Siphonaptera). P. 14-26.
On the basis of morphological data on the head, thorax and aedeagus of 38 species of fleas belonging to 14 genera, analysis of geographical spread and taxon distribution of Chiroptera a revision of the family Ischnopsyllidae was carried out and a scheme of phylogenetic relations of the genera suggested.
5 tribes are distinguished in the limits of the subfamily Ischnopsyllinae: Chiropteropsyllini trib. n. (Chiropteropsylla); Ischnopsyllini trib. n. (Myodopsylla, Ischnopsyllus, Oxyparius, Dampfia, Mitchella, Rhinolophopsylla, Araeopsylla, Lagaropsylla); Nycteridopsyllini trib. n. (Nycteridopsylla); Sternopsyllini trib. n. (Hormopsylla, Sternopsylla, Rothschildopsylla, Ptilopsylla, Allectopsylla); Porribiini trib. n. (Coorila, Porribius, Serendipsylla).
The types of the structure of the head, thorax and aedeagus of fleas of the family Ischnopsyllidae are described.
in Russian
On the fauna of dust inhabiting mites from Primorje. P. 27-31.
The specific composition of acarid mites occurring in dust of rural dwellings in the Far East of the USSR has been first studied and characters of their fauna have been revealed. 3 species are most frequently encountered of which Dermatophagoides pteronyssinus accounts for 56% of all finds. 6 species happened to be new for the fauna of dwellings. The typical synanthropic species Glycyphagus domesticus is totally absent from dwellings but occurs in 90 % of honey-bee hives.
in Russian
Morphology of frontal glands of Grillotia erinaceus (Cestoda, Trypanorhyncha). P. 32-38.
Two types of frontal glands differing in their location, structure and specialization level were identified in the scolex of G. erinaceus. Unicellular glands of the first type represent a modification of integumentary cells of worms. Their secretion comes directly into cytoplasm of tegument and is excreted in an apocrine way. The second type of glands is connected with the central part of scolex. Specialized secretory ducts open in the parietal plate region and are accompanied by sensory nerve endings.
in Russian
Postembryonal development of the cestode Nippotaenia mogurndae (Nippotaeniidea, Nippotaeniidae). P. 39-43.
Postembryonal development of Nippotaenia mogurndae Yamaguti et Miyata, J 940 (Nippotaeniidea, Nippotaeniidae) was studied experimentally. Morphological changes ol this metacestode at all developmental stages in its intermediate host, Mesocyclops leuckarti Claus, are described.
in Russian
Adaptability of cercariae of Diplostomum to carp and the influence of the previous infection upon it. P. 44-48.
Experiments on the infection of carp fry with cercariae of Diplostomum have shown that cercariae of Diplostomum spathaceum can penetrate crystalline lens of larvae of these fishes in three days after their hatching and that the adaptability of cercariae of D. paracaudum to carp is much higher than that of cercariae of D. spathaceum. After the first infection with cercariae a relative postinfectious immunity against infection with cercariae of this or close species of this genus arises in carp fry.
in Russian
The effect of trematode infection and extreme conditions of the environment on the ascorbic acid content in the haemolymph of freshwater gastropods (Gastropoda, Pulmonata). P. 49-54.
In Lymnaea stagnalis and Planorbarius corneus infected with parthenites of trematodes the ascorbic acid content in haemolymph increases at their infection with sporocysts containing mature cercariae at high intensity of infection. At high infection intensity when host's protective reactions are inhibited by parasites the level of ascorbic acid content in haemolymph does not increase. Under conditions of phenol intoxication and starvation the concentration of ascorbic acid in haemolymph of molluscs decreases. In infected individuals this process develops more swiftly.
in Russian
Blood parasites of the birds of the White Sea-Baltic migrational direction. 2. Fauna and distribution of Haemoproteus (Sporozoa, Haemosporidia). P. 55-64.
An analysis of the fauna and distribution of haemosporidiae of the genus Haemoproteus in birds of the White Sea-Baltic migrational direction is given. The author examined 2605 birds belonging to 86 species. Of them 906 birds (34.8%) belonging to 54 species were infected with haemoproteids. The fauna of these parasites is represented by 16 species. The problem of species and difficulties of specific differentiation of haemosporidiae of birds are discussed.
in Russian
The fauna of fleas (Siphonaptera) of jerboas from Central Asia and Kazakhstan. P. 65-67.
91 forms of fleas were found on 14 species of jerboas in Central Asia and Kazakhstan. Of. these forms 27 are specific to these rodents. The forms belonging to Turan (17 forms) and Gobi (5 forms) zoogeographic provinces are dominant. Of non-specific species the fleas of gerbils account for 45.2% and fleas of sousliks — for 17.7%. The specific composition of these insects is most diverse on small five-toed jerboa, Allactaga sibirica saltator Eversmann, northern three-oed jerboa, little earth hare and thick-tailed three-toed jerboa.
in Russian
On phoresia of sucking lice (Anoplura) on flies (Diptera). P. 67-68.
Literary data are given on phoresia of bird lice and lice on louse flies and horn flies. Such finds are unusual on non-bloodsucking flies. In order to study parasite fauna of agricultural animals cattle breeding housings were inspected in the Donetsk region. Some thousands of flies were caught of which about 800 specimens belonged to Coproica ferruginata. A male of Polyplax spinulosa, a louse typical to rats, was found on one fly of this species. Such find is explained by the abundance of Norway rats (Rattus norvegicus) in inspected housings.
in Russian
The find of the flea Xenopsylla cheopis in nests of Microtus arvalis (Pall.) within the precincts of Leningrad. P. 68-70.
Summary is absent.
in Russian
Volfartiosis of wild ruminants in the Zoo "Askania-Nova". P. 70-72.
The paper presents data on the sick rate with volfartiosis in different species of wild ruminants. The animals were maintained in spacious enclosures (up to 1550 hectare). This disease was recorded in 24 species of animals, African eland (33.5%) and American bison (9.4%) being infected mostly often. The morbidity dynamics within years and its dependence on weather conditions is given. The methods of prophylaxis and medical treatment of wild animals are discussed.
in Russian
New species of Gregarinids of the genus Cephaloidophora, parasites of Enphausia superba. P. 72-75.
The description of two new species of Gregarinids, Cephaloidophora pacifica sp. n. and C. indica sp. n., found in the intestine and liver of Euphausia superba is given. The high level of infection causes the pathogenic effect on the host's organism.
in Russian
A study of the development of trypanosomes and cryptobiae of carp and tench in Piscicola geometra. P. 75-77.
The paper presents the results of studies of the development of trypanosomes and cryptobiae of carp and tench in Piscicola geometra. The paper describes an unknown way of reproduction by means of fusion of individuals and formation of cystlike bodies, the subsequent development of which results in a special form schizogony with a formation of rosettes.
in Russian
The effect of thermal and photoperiodic factors on the hatching of miracidia of the trematode Bunodera luciopercae. P. 78-81.
The process of hatching of Bunodera luciopercae miracidia was shown to have its specific dynamics. Hatching took place at its maximum at the morning hours that coincides in time with the period of maximum filtration of clams (g. Pisidium). The total duration of hatching depends on photoperiodic and temperature factors. The minimum period of development is observed under conditions of temperature rhythm and the "light-dark" rhythm, the maximum one — during incubation in the dark or at low temperatures.
in Russian
On the taxonomic status of the genus Mamorchipedum (Trematoda, Orchipedidae). P. 81-85.
37 specimens of trematodes found in the nasal cavity of predatory mammals confirm the validity of the genus Mamorchipedum described on metacercarian form Distoma isostoma Rudolphi, 1819. For 164-year old history of this species it is the second find of M. isostoma marita in naturally infected animals. A study of morphology on serial preparations did not confirm the taxonomic validity of most characters given for substantiation of the genus Mamorchipedum. The paper presents a key to the genera Orchipedum and Mamorchipedum, corrected diagnosis of the genus Mamorchipedum. generalized description of M. isostoma, a host range and data on geographical distribution.
in Russian
The occurrence of Acanthocephalus lucii (Müller) (Palaeacanthocephala, Echinorhynchidae) in the intestinal tract of perch. P. 85-87.
The distribution of Acanthocephalus lucii in the intestinal tract of perch was investigated. It has been established that host's sex and age do not affect the parasite's localisation. At the same time different age groups of A. lucii migrate to different parts of the host's intestine. With age females of A. lucii migrate in the direction of the hind department of the Gut while males remain in its anterior part.
in Russian
Chronicles. P. 88.
Summary is absent.
in Russian