Folia Parasitologica, vol. 37 (1990), issue 1

The interaction of fish trypanosome culture forms with some lectins.

P Zajícek, H Pecková

Folia Parasitologica 37[1] 1-7 (1990)

The interactions of fish trypanosome culture forms with 11 purified lectins were compared using the agglutination test in microwell plates. Altogether, ten stocks of ten different freshwater fish species were examined. Three basic types of cell-lectin interactions were observed on the microscopical level. The strong agglutination of all stocks regardless their original host was found in the presence of Con A, PSA, RCA60, and RCA120, which implies the presence of relatively high amounts of sugar residues of D-mannose and D-galactose in the surface of culture forms of these parasites. Weak agglutinations of some stocks were observed in the presence of...

Entamoeba histolytica--the virulence of imported strains.

M Giboda, O Ditrich, N Vrchotová, J Gutvirth, P Noll, J Sterba

Folia Parasitologica 37[1] 9-19 (1990)

We tested the virulence of 15 strains of Entamoeba histolytica, imported to Czechoslovakia, by intracaecal inoculation of laboratory rats. According to the scoring system of Neal, none of the 15 strains possessed the virulence index greater than 2. This indicates that all the organisms tested should be classified as avirulent. However, it should be noted that all the strains produced infection of the caecum and thus should be considered infective for rat. For 7 strains, isoenzyme patterns were determined for PGM, HK and ME. One imported strain, obtained from student from Congo, demonstrated isoenzyme pattern for PGM and HK indicated that the strain...

Double alteration of the small intestine in conventional and gnotobiotic piglets experimentally infected with the coccidium Isospora suis (Apicomplexa, Eimeriidae).

J Vítovec, B Koudela

Folia Parasitologica 37[1] 21-33 (1990)

The pathogenicity of the coccidium Isospora suis was studied in 42 conventional and 26 gnotobiotic piglets at 1-13 days post infection (DPI). The prepatent period of the coccidium I. suis was 4.5-5 days. Only in one experiment in conventional piglets the prepatent period of 3.5 days was recorded. At least 9 days pathogenesis of I. suis was recorded during which double alteration of the small intestine occurred. The first alteration was found at 3-4 DPI. The second phase of alterative changes was observed at 8-9 DPI. In comparison with gnotobiotic piglets in conventional piglets clinical signs and pathological changes used to appear one day sooner but...

Some remarks on the prevalence and species composition of hare coccidia.

M Pakandl

Folia Parasitologica 37[1] 35-42 (1990)

In the period between autumn 1983 and winter 1985, 33 digestive tracts and 317 coprological samples of hares were examined. The prevalence of individual coccidian species was reported on the basis of the examination of both the digestive tracts and coprological samples. The following coccidian species were found: Eimeria babatica (with 26.4% prevalence in the season 1983/1984 and 31.1% in 1984/1985), E. europaea (21.2% and 30.3%), E. hungarica (6.5% and 7.6%), E. leporis (24.2% and 45.4%), E. macrosculpta (1.3% and 2.5%), E. robertsoni (36.8% and 29.4%), E. sculpta (6.9% and 13.4%), E. semisculpta (15.6% and 10.0%), and E. townsendi (67.1% and 74.8%),...

Additional records of nematode parasites from Papua New Guinea amphibians with a list of recorded endohelminths by amphibian hosts.

F Moravec

Folia Parasitologica 37[1] 43-58 (1990)

An examination of a small sample of four species of frogs (Cophixalus riparius, Phrynomantis humicola, Ph. stictogaster, Ph. wilhelmana) from Papua New Guinea yielded altogether 5 species of nematodes, 2 of them being new to science. These include: Cosmocercella phrynomantisi sp. n. (type host Ph. humicola), Spinicaudinae gen. sp., Parathelandros andersoni sp. n. (type host C. riparius), Oswaldocruzia bakeri, and Paracapillaria spratti. C. phrynomantisi sp. n. differs from congeneric species mainly in the length of spicules (0.180 mm) and the character, arrangement and number of caudal papillae in the male, while P. andersoni sp. n. is characterized...



Folia Parasitologica 37[1] 59-62 (1990)

Electrophoretic analysis of gene-enzyme systems in Chabertia ovina.

J E Ortega, M Sanchez-Moreno, A Fatou, A Valero

Folia Parasitologica 37[1] 63-66 (1990)

In Chaberia ovina species an electrophoretic study of 15 loci of the following enzymes has been conducted: glucose phosphate isomerase, mannose phosphate isomerase, glucose-6-phosphate dehydrogenase, glutamate-oxaloacetate transaminase, superoxide dismutase, isocitrate dehydrogenase, hexokinase, adenylate kinase, malate dehydrogenase, malic enzyme, carbonic anhydrase and 6-phosphogluconate dehydrogenase. The genetic variability has been relatively high, with 40% polymorphism values noted, an 0.10 mean heterozygosity observed and an 0.17 mean heterozygosity expected. The greater part of the allele frequencies were not in Hardy-Weinberg equilibrium.

A new genus of capillariids from birds, Tridentocapillaria gen. n. (Nematoda: Capillariidae).

V Barus, T P Sergeeva

Folia Parasitologica 37[1] 67-75 (1990)

A new genus of the family Capillariidae, Tridentocapillaria gen. n., has been established. A type species is Tridentocapillaria tridens (Dujardin, 1845) comb. n. Other species of this genus are T. eurycerca (Oschmarin et Parukhin, 1963) comb. n., T. parusi (Wakelin, Schmidt et Kuntz, 1970) comb. n., and T. javanensis (Wakelin, Schmidt et Kuntz, 1971) comb. n. The new genus is characterized by the presence of a trilobed pseudobursa formed by three processes, and a vulvar appendage is always present in females. The genus includes species parasitic in the intestine of birds of the orders Passeriformes and Piciformes.



Folia Parasitologica 37[1] 76 (1990)

Visualization of chitin-protein layer formation in Ascaris lumbricoides egg-shells.

D Sromová, H Lýsek

Folia Parasitologica 37[1] 77-80 (1990)

The formation of chitin-protein layer in Ascaris lumbricoides egg-shells was studied using the method of chitin structures visualization by means of derivatives of stilbene-disulfonic acid (Blankophor, Bayer, FRG). Intensive formation of chitin structures in A. lumbricoides egg-shell occurred only in fertilized females in a very short portion of uterus from the site of connection of the oviduct with the uterus up to 25-30 mm distally, i.e. in the section forming about one fifth or less than one sixth of length of adult female uterus. Already 3 mm from the beginning of uterus there was a thin layer on the surface of the fertilized eggs which contained...

Three species of the hair follicle mites (Acari: Demodicidae) parasitizing the sheep, Ovis aries L.

V Bukva

Folia Parasitologica 37[1] 81-91 (1990)

Evidence of three distinct Demodex species parasitizing the sheep is given for the first time. A newly distinguished Demodex sp. is described, and diagnostic characters are compared for Demodex ovis Hirst, 1919, D. aries Desch, 1983, and Demodex sp. Information on prevalence, distribution in the tissues, and pathogenicity of these three Demodex species in 132 head of sheep in Czechoslovakia is presented, with a review of such data published to date.

Occurrence of the tick Ixodes laguri Ol. on the territory of Czechoslovakia.

V Cerný

Folia Parasitologica 37[1] 92 (1990)

First record of Avioserpens larvae (Nematoda) from the naturally infected intermediate host.

F Moravec, T Scholz

Folia Parasitologica 37[1] 93-94 (1990)

First record of mite hypopi (Acaridae) on fleas from Czechoslovakia.

J Preisler, K Samsinák, V Cerný

Folia Parasitologica 37[1] 94 (1990)