Folia Parasitologica, vol. 34 (1987), issue 3

Studies on the life cycle of Cryptosporidium coccidia in experimentally infected chickens.

I Pavlásek

Folia Parasitologica 34[3] 193 (1987)

Experimental infections of 7-28-day-old chickens with Cryptosporidium oocysts isolated from spontaneously infected chickens demonstrated that the endogenous development of this parasite takes place simultaneously in the organs of digestive, respiratory and excretory systems and in bursa of Fabricius. It was demonstrated for the first time that the oocysts of Cryptosporidium are shed through the respiratory tract into the beak cavity. A novel rapid and simple method has been developed for the detection of oocysts. Its principle is the rinsing of the beak cavity. This method enabled to isolate the oocysts from experimentally infected chickens and immediately...

Finding of coccidia of the genus Cryptosporidium in the organs of calf excretory system.

I Pavlásek, V F Nikitin

Folia Parasitologica 34[3] 197-198 (1987)

Pathology of natural isosporosis in nursing piglets.

J Vítovec, B Koudela

Folia Parasitologica 34[3] 199 (1987)

In piglets suffering from natural coccidiosis, post-mortem examination showed that pathological changes induced by Isospora suis were evident from day 7 to day 14 of life, and particularly, by days 9 and 10. Macroscopically, the changes were manifest as enteritis varying from catarrhal to pseudomembraneous form. Microscopically, they consisted of more or less extensive atrophy of villi whose apical parts were necrotic, of metaplasia and erosion of epithelium. With the exception of duodenum and the adjoining sector of jejunum, the alterations were manifest along the entire small gut though intensity of lesions and incidence of endogenous stages of Isospora...

Contribution to the knowledge of Gyrodactylus gurleyi Price, 1937 (Monogenea: Gyrodactylidae).

R Ergens, S S Yukhimenko

Folia Parasitologica 34[3] 205-209 (1987)

Gyrodactylus longoacuminatus Zitnan, 1964, forma minor sensu Ergens (1985) was identified as G. gurleyi Price, 1937. Morphological and metrical evaluations of the hard parts of opisthaptor of more than 200 specimens provided data on the variability of this parasite; Cyprinus carpio haematopterus represents its new host. Since the shape of the hard parts of opisthaptor of G. gurleyi is very similar to that of G. longoacuminatus, further detailed studies of the two species will be necessary, particularly of their reaction to the changes of environmental temperature.

Experimental verification of the effect of physical condition of Gobio gobio (L.) on the growth rate of micropopulations of Gyrodactylus gobiensis Gläser, 1974 (Monogenea).

M Gelnar

Folia Parasitologica 34[3] 211-217 (1987)

It has been verified experimentally that the growth rate of G. gobiensis micropopulations is markedly affected by the physical condition of the host (Gobio gobio). If the fish were weakened by 50% oxygen deficiency and lack of food, the number of parasites increased much more rapidly than on the fish also unfed but kept in water with 100% oxygen content. If the fish weakened by oxygen deficiency were intensively fed, the growth of the parasite micropopulations started to slow down after 4-5 days. When the feeding was stopped, the number of parasites increased again after 10-11 days. These time shifts seem to be associated with the physical condition...

PREDATION BY THE LARVAE OF THE FLEA HYSTRICHOPSYLLA-TALPAE (CURTIS, 1826)

F NEMEC, J MACA

Folia Parasitologica 34[3] 217-218 (1987)

CHAETOTAXY OF THE CERCARIA OF PLAGIORCHIS-MACULOSUS (RUDOLPHI, 1802) (TREMATODA, PLAGIORCHIIDAE)

J BUSTA

Folia Parasitologica 34[3] 219-224 (1987)

DISTRIBUTION OF MUCOSUBSTANCES, PROTEINS, ENZYMES AND LIPIDS IN THE TREMATODE BRACHYLAIMUS-AEQUANS

Z ZDARSKA, T N SOBOLEVA

Folia Parasitologica 34[3] 225 (1987)

Characteristics of malic enzyme from the cysticerci of Taenia crassiceps (Zeder, 1800).

J Zenka, J Prokopic

Folia Parasitologica 34[3] 233-241 (1987)

Kinetic parameters of partly purified malic enzymes (NADP+: L-malate oxidoreductase (decarboxylating) EC 1.1.1.40) from the cytoplasm and mitochondria of Taenia crassiceps cysticerci were compared. The cytoplasmic malic enzyme differed from the mitochondrial malic enzyme in the K'M for malate; other studied properties were identical. The chromatographies of both the cytoplasmic and mitochondrial enzymes were identical. They exhibited a hyperbolic dependence of the activity on malate concentration, sigmoidal kinetics was not observed. The effects of succinate and fumarate known as positive modulators of the activity of malic enzymes from other sources...

Immune reactions in guinea pigs due to somatic antigens from fourth-stage larvae of Bunostomum trigonocephalum.

S Kumar

Folia Parasitologica 34[3] 243-247 (1987)

Lyophilized somatic antigens obtained from fourth-stage larvae of Bunostomum trigonocephalum induced significant resistance against the development of L4 from L3 and adults from L4. The higher antigen dose (1,000 LE) significantly reduced the number of adults developed from L4 as compared to the lower dose (600 LE) which did so only insignificantly. Inflammation of the intestinal tissue and loosening of the intestinal luminal contents were characteristics of the immunized animals.

Evaluation of specific humoral immune responses in human filariasis.

H Kumar, A Malhotra, S Santhanam, D C Jain, T K Ghosh

Folia Parasitologica 34[3] 249-254 (1987)

Using the antigens prepared from adult worms of B. malayi and D. immitis, a total of 37 malayan and 150 bancroftian serum samples were analysed for the presence of filarial specific antibodies by counterimmunoelectrophoresis and indirect enzyme linked immunosorbent assay. It was observed that microfilaraemic cases do show good specific humoral immune responses against homologous as well as heterologous antigen. Of the two antigens used, B. malayi adult antigen was found to be superior to D. immitis antigen in the detection of filarial antibodies.

SOME PARASITIC NEMATODES, EXCLUDING HETERAKIDAE AND PHARYNGODONIDAE, FROM AMPHIBIANS AND REPTILES IN EGYPT

F MORAVEC, V BARUS, B RYSAVY

Folia Parasitologica 34[3] 255 (1987)

ON PARASITIC NEMATODES OF THE FAMILIES HETERAKIDAE AND PHARYNGODONIDAE FROM REPTILES IN EGYPT

F MORAVEC, V BARUS, B RYSAVY

Folia Parasitologica 34[3] 269 (1987)

Haemagglutination-inhibiting antibodies against arboviruses of the families Togaviridae and Bunyaviridae in birds caught in southern Moravia, Czechoslovakia.

Z Juricová, Z Hubálek, J Halouzka, J Pellantová, J Chytil

Folia Parasitologica 34[3] 281-284 (1987)

A total of 295 birds belonging to 19 species of 7 families of wild Passeriformes were examined by haemagglutination-inhibition test. The birds were caught for an international research program "Balt" at the time of autumn migration (August-September 1984). Their blood sera were examined for antibodies against 6 arbovirus antigens of the genera Alphavirus (Sindbis-SIN) and Flavivirus (tick-borne encephalitis-TBE, West Nile-WN) and family Bunyaviridae (Tahyna-TAH, Calovo-CVO and Bhanja-BHA). Antibodies against all studied viruses were detected at different frequencies: SIN 6.4%, TBE 7.1%, WN 9.7%, TAH 16.3%, CVO 12.1%, and BHA 1.0%.

First record of Sphaerospora renicola Dyková et Lom, 1982 and Myxobolus encephalicus Mulsow, 1911, pathogenic protozoans of carp from the U.S.S.R.

M Pavlásková, O N Strelkov

Folia Parasitologica 34[3] 285-286 (1987)

MORPHOLOGICAL VARIATION IN TEETH OF RHABDOCHONA-ONCORHYNCHI (FUJITA, 1921) FROM JAPANESE FRESH-WATER SALMONIDS

M ITO, K NAGASAWA, H KAMIYA, M OHBAYASHI

Folia Parasitologica 34[3] 287 (1987)