Folia Parasitologica, vol. 33 (1986), issue 2

On the problem of retarding definitive host (s.l.).

J K Macko

Folia Parasitologica 33[2] 97-105 (1986)

The significance of the species and individual level in determining the hosts as a category of helminth life cycles is pointed out. From the viewpoint of species level, the categories of intermediate host and definitive host are ascribed to certain organisms as representatives of a certain species on the basis of the fact that a respective stage of helminth life cycle can take place inside them. From the viewpoint of individual level, these types of hosts are determined on the basis of associations between the helminth individual and host individual. In order to avoid discrepancies, which might occur in determining the host type in these ways, it is...

Trypsin-sensitive plasmodia in the liver of post-infection rats and rhesus monkeys.

Q Z Hussain, C R Pillai, B Ravindran, N Kaushik

Folia Parasitologica 33[2] 107-113 (1986)

Kupffer cells from the liver and erythrocytes from peripheral blood were collected at the post-patent period from albino rats infected earlier with Plasmodium berghei and rhesus monkeys infected earlier with P. cynomolgi var. bastianelli or P. knowlesi. The cells were subinoculated into individual normal recipients. These recipients subsequently showed parasitaemia in their circulation. The parasites present in Kupffer cell preparations were found to be sensitive to trypsin treatment, while those in erythrocytes were found to be resistant to trypsin treatment. This differential sensitivity of parasites to trypsin was observed in all the three species...

Histopathological changes in the liver tissue of house mouse and common vole during sarcocytosis.

V Skárková

Folia Parasitologica 33[2] 115 (1986)

The asexual reproduction of Sarcocystis dispersa was studied in the liver of the house mouse. Histopathological examinations revealed infection of parenchymal cells with the parasite and diffuse cellular infiltrations with the presence of polymorphonuclear cells, monocytes and eosinophilic leukocytes. The volume and number of cellular infiltrates increased gradually from day 3 till day 10 p.i. Then appeared necrotic foci and both phenomena reached the maximum on days 10-12 p.i. On days 21-34 p.i., no changes occurred in the tissue and the liver healed without scars. The infection of common vole with Sarcocystis cernae sporocysts caused cellular infiltrations...

RECORD OF PLAGIORCHIS-NEOMIDIS-BRENDOW, 1970 (TREMATODA, PLAGIORCHIDAE) IN CZECHOSLOVAKIA AND STUDIES ON ITS LIFE-CYCLE

J BUSTA, V NASINCOVA

Folia Parasitologica 33[2] 123 (1986)

OCCURRENCE OF SOLENOPOTES-CAPREOLI (ANOPLURA) IN CZECH LANDS

J PREISLER, V CERNY

Folia Parasitologica 33[2] 129-130 (1986)

Morphological and histochemical studies on the development of testis and spermatogenesis in the ruminal trematode of sheep, Paramphistomum cervi (Digenea: Paramphistomatidae).

B C Gupta, V R Parshad, S S Guraya

Folia Parasitologica 33[2] 131 (1986)

Morphological and histochemical changes accompanying testicular development and spermatogenesis have been described in the ruminal trematode Paramphistomum cervi during the course of its infection in sheep. Small testes of 4-week-old worms contain a few primordial germ cells. Spermatogonial cells appear first in 6-week-old worms and increase in number by the 10th week when the testes become large and follicular. Mature spermatozoa appear in the testes of 16-week-old worms. General pattern of spermatogenesis is the same as described for other trematodes, i.e. a single spermatogonium gives rise to 32 spermatozoa. Cytophore is formed at secondary spermatogonial...

Study of cytochromes from mitochondria of Taenia crassiceps (Zeder, 1800) cysticerci.

J Zenka, J Prokopic

Folia Parasitologica 33[2] 145-148 (1986)

Cytochrome components of mitochondria from Taenia crassiceps cysticerci were studied by difference spectrophotometry (at 22 degrees C). The following concentrations of cytochromes (expressed in nmol X mg-1 protein) were found: 0.132 (cytochrome b), 0.083 (cytochrome c), and 0.0856 (cytochrome aa3). The participation of aerobic processes in the general production of energy is discussed and the results are compared with literary data obtained in cytochrome studies of other parasitic worms.

Efficacy of benzimidazoles against larval Ancylostoma caninum infection in mice.

G M Bhopale, B S Bhatnagar

Folia Parasitologica 33[2] 148-150 (1986)

A NEW CAPILLARIID, PARACAPILLARIA-KUNTZI SP-N (NEMATODA, TRICHURIDAE), FROM COLUBRID SNAKES IN TAIWAN

F MORAVEC, D I GIBSON

Folia Parasitologica 33[2] 151-155 (1986)

The absence of an interaction between a Microtus pennsylvanicus density cycle and Dermacentor variabilis infestation levels.

W D McEnroe

Folia Parasitologica 33[2] 155-156 (1986)

The response of captive rodents to the migration of Ancylostoma caninum larvae.

B O Fagbemi, O Fagbemi, O O Dipeolu

Folia Parasitologica 33[2] 157-162 (1986)

The distribution of the larvae of Ancylostoma caninum in tissues of captive wild rodents (Rattus rattus) and the leucocytic and behavioural responses of these rodents were studied after experimental oral infection. There was a wide distribution of larvae in tissues with a preponderance of the larvae in the skeletal muscles of the anterior part of the body in older infection. The rats responded by an elevation of total leucocytes and eosinophils in blood, alternation of locomotory activity and behavioural dominance that may have a correlation with predation and epidemiology of A. caninum in a sylvatic setting.

Serum levels of aspartate transaminase, alanine transaminase and worm burden in mice infected with Ancylostoma caninum larvae.

V V Vardhani

Folia Parasitologica 33[2] 163-167 (1986)

Aspartate transaminase and alanine transaminase levels showed considerable increase during initial (1 to 9 days) period of infection in all the experimental groups of mice and their level reached higher values than in the controls. The increase of enzymes was influenced by the degree of retention of worm load and the immunological damage caused by Ancylostoma caninum larvae within the host system.

THE FORMATION OF ASCAROSID LAYER OF THE EGGSHELL IN ASCARIS-LUMBRICOIDES

D SROMOVA

Folia Parasitologica 33[2] 169 (1986)

A COMPARISON OF SOME DIAGNOSTIC FEATURES OF EULAELAPS-STABULARIS (KOCH, 1839) AND EULAELAPS-OUDEMANSI-TURK, 1945 (ACARINA, PARASITIFORMES) BY MEANS OF SCANNING ELECTRON-MICROSCOPE

M KOHN, J STERBA

Folia Parasitologica 33[2] 173 (1986)

INFLUENCE OF SUSPENDED ORGANIC AND ANORGANIC SUBSTANCES IN WATER UPON THE NUMBERS OF BLACKFLY LARVAE (DIPTERA, SIMULIIDAE)

J OLEJNICEK

Folia Parasitologica 33[2] 177-187 (1986)

TERATOLOGICAL ABERRATIONS IN PARICTEROTAENIA-POROSA (RUD, 1810) (CESTODA, DILEPIDIDAE)

P KOUBEK

Folia Parasitologica 33[2] 189-192 (1986)