Light- and electron microscopical study of Leptomonas pyrrhocoris Z. (Kinetoplastida, Trypanosomatidae). P. 3-9.
A comparative lihgt-microscopical study was carried out on Leptomonas pyrrhocoris from midgut, rectum and hemolymph of the bug Pyrrhocoris apterus. The culture forms of this flagellate were studied too. The morphology of L. pyrrhocoris changes considerably at different life cycle stages. Geographical isolation of P. apterus populations seems to have no influence on the morphology of these flagellates. The present paper reports the result of observations on the fine structure of L. pyrrhocoris and the interrelations between the flagellates and the extracellular membrane formations inside the bug's intestine.
in RussianObservations on the cocoonformation process in fleas of Nosopsyllus fasciatus. P. 10-15.
The succession of the cocoon formation by larvae of the flea Nosopsyllus fasciatus has been studied. The ability of larvae to use different material for cocoon formation has been shown. It has been found out that glands producing silky substance in the cocoon formation period are modified salivary glands characteristic of larvae at feeding stages.
in RussianSome peculiarities of digestion and peritrophic membrane formation in sand flies Sergentomyia arpaklensis. P. 16-21.
Dissections and hystologic sections of sand flies of S. arpaklensis, which were fed-experimentally with blood of reptiles, have shown that mode of clot and peritrophic membrane formation differs in a number of characters from similar processes in members of the genus Phlebotomus. Most essential differences are as follows: rapid excretion of thick dense-layer of membrane prosecretion and destruction of nuclear erythrocytes, delamination of engorged blood into nuclear and anuclear fractions and separation of these fractions with an additional layer.
in RussianDistribution and infection rate of fleas of the common vole with nematodes in the Caucasus. P. 22-25.
The paper presents data on the distribution of nematodes among fleas of the common vole and the extensiveness of the infection of these insects in the Caucasus and Transcaucasia. The nematodes are assumed to play a certain role in the natural regulation of populations of fleas from wild rodents.
in RussianStructure of integument in plerocercoids and mature Grillotia erinaceus (Gestoda, Trypanorhyncha). P. 26-34.
As a result of a detailed study morphofunctional differentiation of integument of Grillotia erinaceus during ontogenesis was identified. During the development of plerocercoids the formation of specialized bothria and differentiation of integument of scolex, which includes a change of simple microtrichia for larger complex polymicrotrichia with distinct fixative function, take place. In addition to polymicrotrichia, on the surface of the tegument of scolex and strobile microtrichia of the trophic type, microvilli and receptor cilia were found. There ia a distinct zonal distribution of surface structures which form sensory-trophic area of the apical plate, fixative area of the external side of bothria and mixed fixative-trophic one on the remaining surface of scolex and strobile with a domination of trophic function. Comparative morpho-metric data for microtrichia of the trophic type are given on account of which the surface of strobile increases by a factor of 38. Tegumental cells on the scolex are specialized for fulfilling a secretory function, on the strobile and neck — to the assimilation of nutrients. Most tegumental cells of the strobile have bacteria in the cytoplasm, the presence of which changes considerably the ultrafine organisation of these cells.
in RussianMorphology and biology of trematodes of Hypoderaeum cubanicum comb. n. and H. conoideum (Echinostomatidae). P. 35-42.
The trematode Cotylotretus cubanicus Artjuch, 1958 (the fam. Cotylotretidae) from wild Anatidae of the Novosibirsk District (region of the Lake Chany) was studied. A study of morphological characters and their statistical analysis have shown that its structure does not correspond to the diagnosis of the genus Cotylotretus and that reliable evidences for the presence of members of the family Cotylotretidae in the USSR are missing. The trematode C. cubanicus is referred to the genus Hypoderaeum (fam. Echinostomatidae) — H. cubanicum (Artjuch, 1958), Jatschenko comb. n. The life cycle of this trematode was observed experimentally and marites and larvae of H. cubanicum with similar stages of H. conoideum were compared. Addition to the diagnosis of the geuus Hypoderaeum has been made.
in RussianBlood patern of Hypophthalmichthys molitrix, Aristichthys nobilis and Ictiobus cyprinellus during their infection with metacercariae of the genus Diplostomum (Trematoda, Diplostomidae). P. 43-49.
Investigations of the blood of one summer old fishes, yearlings and two-year old specimens of silver carps and of Ictiobus cyprinellus infected with Diplostomum spathaceum s. str. have revealed anemia, neutrophilia on account of metamyelocytes and stab neutrophils, lymphopenia. Seasonal differences in the reaction of red and white blood of fishes to the infection, which are associated with variations in the fermentative activity of metacercariae, intensity of hemopoiesis and infection indices, have been noted.
in RussianDynamics of immunoglobulins and immunocompetent lymphocytes in guinea pigs during experimental ascariasis. P. 50-57.
The paper presents data on variations in the level of serous immunoglobulins (Ig M and Ig G classes), immunocompetent T- and B-lymphocytes in lymphoid organs (spleen, mesenteric, portal and mediastinallymph nodes) and specific antiparasitic antibodies in guinea pigs during the dynamics of experimental ascariasis.
in RussianMusca osiris, a new intermediate host of Thelazia gulosa. P. 58-59.
Musca osiris Wd. was first recorded as an intermediate host of the nematode Th. gulosa. In Tadjikistan Musca autumnalis Deg. was first recorded as an intermediate host of Th. gulosa and Th. skrjabini. The flies are suggested to be used as indicators of thelaziasis infection by using akey suggested for the first time for the definition of species of larvae belonging to the genus Thelazia during differentiation of infected larvae from flies.
in RussianCheliceral sensillae of the ixodid tick Hyalomma asiaticum. P. 60-62.
Cheliceral sensillae of the ixodid tick Hyalomma asiaticum were studied by means of scanning electron microscopy. On the internal digit of chelicerae sensillae are represented by a poreform recess, fossae on the tooth and a flat sensilla at the base of this digit. On the external digit sensillae are represented by pores at the base of the apical tooth. Males have two and females three pores.
in RussianFinding of the fungus Coelomycidium sp. (Chytridiales) in larvae of black flies from Azerbaijan. P. 62-64.
The fungus of the genus Coelomycidium was first recorded from larvae of black flies of Azerbaijan. External characters of the infection and morphology of zoosporangia are described.
in RussianDistribution of some species of parasites on the gills of ruffe. P. 64-68.
Data on the distribution of Dactylogyrus amphibothrium, Ergasilus sieboldi, Gyrodactylus longiradix and Myxobolus muelleri on the gills of ruffe Gymnocephalus acerinae are given. In different years the distribution of the parasites on the gills may vary that is apparently due to the intereffect of the parasites. The paper concerns as well the effect of host sex and oxygen content in the water on the distribution of dactylogyruses. The parasites have a similar distribution on the gills of males and females of the ruffe. With the decrease in oxigen content a change in the localization of the worms and decrease in their abundance were observed.
in RussianOn the systematic position of the genus Neoheterobothrium Price, 1943 (Monogenea, Diclidophloridae) in connection with the description of a new species N. syacii sp. n. P. 69-73.
A new species, Neoheterobothrium syacii Mamaev et Zhukov, sp. n., from Syacium sp. from the Gulf of Mexico is described. The diagnosis of the genus Neoheterobothrium Price, 1943 (which should be assigned to the subfamily Choricotylinae) is made more precise. The genus includes three species, N. affine (Linton, 1898), a new species N. syacii and N. exilis (Crane, 1972) comb. n. For the species Diclidophora pugetensis Robinson, 1961 (syn. Neoheterobothrium pugetensis) a new monotypical genus, Neodiclidophora Mamaev, gen. n., belonging to the subfamily Diclidophorinae is erected.
in RussianGryptaphelenchus diversispicularis sp. n. (Tylenchida, Aphelenchoididae), a new nematode of Ips subelongatus Motsch. (Coleoptera, Ipidae). P. 73-78.
When studying nematodes of larch stem pests from the Magadan district a new species of nematodes, Cryptaphelenchus diversispicularis sp. n., was recorded from Ips subelongatus. The species differs from other species of the genus in the dimorphism of spicules: the right one has a longer and distinctly separating capitulum than the left one. Parasitic are koryogamycally inseminated juvenile females which are localized in young beetles in coxal pits of anterior legs. Localization of nematodes in flying beetles is not established. In passages of bark-beetles several free-living generations of these worms develop. Cultivation of Cryptaphelenchus on miceto-bacterial media shows that under laboratory conditions the development of nematodes proceeds for 4 days, egg laying lasts 7 to 10 days and a female lays on the average 8 eggs a day. Relatively rapid development, high fecundity and parasitism of inseminated females favour the distribution and great abundance of C. diversispicularis in the passages of I. subelongatus.
in RussianFacultative intrauterine development in phytonematodes. P. 78-81.
Parasitic nematodes from rhizosphere of pine seedlings were studied. Of 16 examined nematodes one female of Helicotylenchus paxilli containing second-instar larvae in both uteruses was recorded. This is the second report concerning such phenomenon in H. paxilli. A brief analysis of literature on this problem is given. Russian terms corresponding to "matricidal hatching" and "intra-uterine development" are suggested.
in RussianChronicle. P. 82-84.
Summary is absent.
in Russian---
Summary is absent.
in RussianBook revies. P. 86.
Summary is absent.
in Russian
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