Folia Parasitologica, vol. 37 (1990), issue 2

Amoebiasis in foreign students.

M Giboda, O Ditrich, N Vokurková-Vrchotová

Folia Parasitologica 37[2] 97-104 (1990)

A total of 2,883 foreign students at the age of 18-30 years were examined for amoebiasis after their arrival to Czechoslovakia. Stool examinations revealed the presence of Entamoeba histolytica in 112 of them (3.9%). Students from 38 countries were found to be infected with this parasite. In a set of 2,064 students from these countries E. histolytica prevalence in stool was 5.4%. There were greater differences in the prevalence between individual countries inside a geographical region than between individual geographical regions. The highest E. histolytica prevalence in stool was found in students from tropical and southern Africa (6.7% of 745 examined)...

Isolation, cultivation and isoenzyme characterization of Giardia intestinalis strains.

P Horák, N Vrchotová, E A Meyer, M Giboda

Folia Parasitologica 37[2] 105-106 (1990)

Mammalian cell cultures affected by Naegleria gruberi.

D T John, R A John

Folia Parasitologica 37[2] 107 (1990)

Amebae of 8 strains of Naegleria gruberi were able to destroy 10 established mammalian cell lines including lung, kidney, ovary, connective tissue, neuroblastoma, and laryngeal and cervical carcinoma cells. The strains of N. gruberi varied in their ability to produce a destructive effect (DE) in African green monkey kidney (Vero) cell cultures. However, cell line susceptibility was found to be equivalent when tested with the considerably destructive 1518/l strain of N. gruberi. The Vero cell line proved to be a useful indicator culture for assessing the destructive potential of N. gruberi strains. Other factors affecting the extent of DE produced were...

Experimental verification of the water temperature effect on the micropopulation growth of Gyrodactylus rutilensis Gläser, 1974 (Monogenea).

M Gelnar

Folia Parasitologica 37[2] 113-114 (1990)

SYNOPSIS OF TYPE SPECIMENS DEPOSITED IN THE HELMINTHOLOGICAL COLLECTION OF THE INSTITUTE OF PARASITOLOGY, CZECHOSLOVAK-ACADEMY-OF-SCIENCES, IN CESKE-BUDEJOVICE .1. MONOGENEA

F MORAVEC

Folia Parasitologica 37[2] 115-129 (1990)

First record of Raphidascaris (Sprentascaris) hypostomi (Petter et Cassone, 1984) comb. n. and R. (S.) mahnerti (Petter et Cassone, 1984) comb. n. (Nematoda: Anisakidae) from Brazil with remarks on the taxonomic status of the genus Sprentascaris Petter et Cassone, 1984.

F Moravec, A Kohn, B M Fernandes

Folia Parasitologica 37[2] 131-140 (1990)

Large numbers of anisakid nematodes identified as Raphidascaris (Sprentascaris) hypostom (Petter et Cassone, 1984) were collected from the stomach and intestine of armoured catfishes P leco stomus albopunctatus, P. commersoni, P. derbyi, and Ancistrus cirrhosus (all representing new host records) from the three water reservoirs, Salto Osório, Salto Santiago and Passo Fundo, in southern Brazil. Another closely related species, R. (S.) mahnerti (Petter et Cassone, 1984), was recorded from the intestine of the armoured catfish Loricaria laticeps of the Paraná River. Since these are the first records of these parasites since their original descriptions,...

The susceptibility of different gastropod species to the infection with Varestrongylus sagittatus (Mueller, 1890) Dougherty, 1945.

P Rezác

Folia Parasitologica 37[2] 141-149 (1990)

The susceptibility of 11 species of terrestrial gastropods to the infection with Varestrongylus sagittatus has been studied under laboratory conditions. The gastropods Zenobiella umbrosa, Monachoides incarnata. Deroceras reticulatum, Cepaea nemoralis, Cepaea hortensis, Arion rufus, and Trichia hispida are new potential intermediate hosts of V. sagittatus. The highest susceptibility and the shortest period of development of the V. sagittatus larvae occurred in Succinea putris. The development of V. sagittatus larvae inside S. putris did not proceed at the temperature of 5 degrees C, but at 10 degrees C, 15 degrees C, 20 degrees C, and 25 degrees C,...

Mechanism and pathway of glucose transportation in a digenetic trematode Ceylonocotyle scoliocoelium.

M Bose, C R Maity, S K Ghosal, G Majumdar

Folia Parasitologica 37[2] 151 (1990)

The mode of absorption, kinetics and mechanism of transportation of 14C--glucose in a digenetic trematode, Ceylonocotyle scoliocoelium were studied by culturing the trematodes under in vitro condition in Hank's saline supplemented with radioactive tracer. It was then followed separately by autoradiography and liquid scintillation. Autoradiographic study reveals that the maximum amount of glucose uptake occurs through cuticle whereas the role of intestinal canal is insignificant in this respect. Maximum cpm is recorded in the precipitate followed by TCA treatment. This is due to the presence of a protein-bound 14C-glucose which is assumed as the carrier...

PRECOCENES - POSSIBLE MEANS TO CONTROL THE BEE MITE, VARROA-JACOBSONI (OUDEMANS)

V NEMEC, J KAHOVCOVA, M PEROUTKA, V VESELY

Folia Parasitologica 37[2] 157 (1990)

A survey on indoor resting mosquito species in Phnom Penh, Kampuchea.

M Kohn

Folia Parasitologica 37[2] 165-174 (1990)

Indoor resting mosquitoes were collected in 7 localities (250 houses) of Phnom Penh at various periods. The mosquitoes were collected for 8 min in every house by means of an aspirator and net. A total of 16 species of mosquitoes resting in houses were found, one of them for the first time in Kampuchea. Culex quinquefasciatus was the predominant species in 6 of the localities observed; its predominance in houses was more or less evident; Aedes aegypti prevailed in one locality. The percentage of A. aegypti predominance in houses corresponds with the risk of occurrence of dengue haemorrhagic fever. Anopheles vagus was found resting in higher abundance...

Structure of the Aedes aegypti (L.) and Culex quinquefasciatus Say (Diptera: Culicidae) populations in the houses of Phnom Penh (Kampuchea).

M Kohn

Folia Parasitologica 37[2] 175-181 (1990)

Sex ratio and engorged females ratio were studied in the main mosquito species populations (Aedes aegypti, Culex quinquefasciatus and partially Anopheles vagus) in the houses of Phnom Penh. Collections were carried out in 7 different localities, including area from the centre of the town to the periphery. In Ae. aegypti and C. quinquefasciatus populations females were dominant in 5 localities, while males were dominant in 2 localities. Engorged females were predominant over unfed ones in all cases (collections were always carried out in the morning). Structure of population varied slightly according to the date of collection. The influence of two main...

Occurrence of the tick Ixodes ricinus (L.) under the conditions of anthropopressure.

M Daniel, V Cerný

Folia Parasitologica 37[2] 183-186 (1990)

The authors report on their findings of the tick Ixodes ricinus under urban conditions of Prague. The concrete data were taken as a basis for a general scheme of possible occurrence of this species in various town parts, determined by the state of vegetation and presence of large mammals. Discussed are also conditions for I. ricinus maintenance in another type of anthropogenous landscape, the spoil banks resulting from brown coal exploitation.

Study on the population of the warble fly, Oestromyia leporina (Pallas. 1778) (Diptera, Hypodermatidae) in Bohemia.

P Volf, J Lukes, V Srp

Folia Parasitologica 37[2] 187-190 (1990)

A new population of the warble fly, Oestromyia leporina from Western Bohemia is described. The parasite was recorded on Microtus arvalis and M. agrestis. The infection of offspring in the den did not occur.

SPECIAL TEGUMENT ARRANGEMENT IN POSHARMOSTOMUM-GALLINUM METACERCARIA AS REVEALED BY SCANNING ELECTRON-MICROSCOPY

Z ZDARSKA, TA BAKKE, TN SOBOLEVA

Folia Parasitologica 37[2] 191 (1990)