Folia Parasitologica, vol. 36 (1989), issue 1

The effect of infection by Babesia sp. on some biological parameters of engorged females of Boophilus microplus.

A A Guglielmone, A J Mangold, D H Aguirre, A B Gaido, A A De Olsen

Folia Parasitologica 36[1] 1-6 (1989)

Engorged females (EF) of Boophilus microplus tick were collected from Hereford, Criolla and Nelloreheifers of three different herds to study the influence of natural babesial infection on the following biological parameters of the EF: engorgement weight, preoviposition period, minimal egg incubation period, egg hatching and Reproductive Efficiency Index. No detrimental consequences to the reproduction of EF carrying babesial infection were found when compared with those EF in which no kinetes of Babesia were detected. Even the groups of EF most highly parasitized (21 to 110 kinetes per microscope field of hemolymph) showed biological values considered...

The morphology of Trianchoratus aecleithrium Price et Berry, 1966 (Dactylogyridae, Monogenea) from a new host Trichogaster trichopterus trichopterus (Pallas, 1777).

M Gelnar

Folia Parasitologica 36[1] 7-11 (1989)

The monogenean parasite Trianchoratus aecleithrium Price et Berry, 1966 is comparatively described from the gills of Trichogaster trichopterus trichopterus from aquarium in Czechoslovakia. T. trichopterus trichopterus represents a new host record for this parasite.

The ecology of Crepidostomum species (Allocreadiidae: Digenea) in the salmonoids of Lake Yli-Kitka in northeastern Finland.

R Rahkonen, E T Valtonen

Folia Parasitologica 36[1] 13-24 (1989)

Crepidostomum spp. were studied from 417 whitefish (Coregonus acronius Rapp, 1854), 220 vendace (Coregonus albula L.) and 38 brown trout (Salmo trutta m. lacustris (L.)) from Lake Yli-Kitka in northeastern Finland during 1980-1983.12.7% of the whitefish were infected with Crepidostomum with a mean intensity of 4.6 worms per infected fish. The species involvedare C. farionis (Müller, 1784) and Crepidostomum wikgreni Gibson et Valtonen, 1988, which differed from C. farionis in the number and size of the eggs. Both types were encountered in the gall-bladder and intestine, but were unable to be distinguished as immature stages. 21% of the brown trout harboured...

Ultrastructural observations on the redia of Echinostoma revolutum (Froelich, 1802).

J Valkounová, Z Zdárská, V Nasincová

Folia Parasitologica 36[1] 25 (1989)

E. revolutum redia digestive and excretory system ultrastructure, as well as body wall tegument were studied in TEM. The body tegument protrudes in short microvilli and contains uni- and multiciliate sensory endings. The anterior part of the digestive system (pharynx, short oesophagus) is lined with body tegument, the caecum being covered with a flat epithelium with sporadic microvilli. Oesophageal gland cells are filled with minute electron-dense granules. The excretory capillaries joined to large flame cells are composed of spirally wrapped cells, in the cytoplasm of which there are clusters of microtubules. The special features of the digestive...

Porcine neonatal coccidiosis in Cuba.

B Koudela, E Gómez, R Abreu, J Vítovec

Folia Parasitologica 36[1] 31-32 (1989)

Occurrence of Proteocephalus percae and P. cernuae in the perch and ruff in northern Finland.

E T Valtonen, P Rintamäki

Folia Parasitologica 36[1] 33-42 (1989)

The occurrence of two palearctic Proteocephalus species, P. percae and P. cernuae, in the perch and ruff, respectively, was studied in two areas of northern Finland in 1977-1983. In the Bothnian Bay, 243 perch (Perca fluviatilis) and 406 ruff (Gymnocephalus cernuus) were studied, of which 60% and 40%, respectively, were infected, while in Lake Yli-Kitka the prevalences were 10% in 213 perch and 24% in 307 ruff. Higher mean intensities of infection were found in the Bothnian Bay fish than in those from the lake, but no infected fish had as many as 10 worms. Proteocephalus infection in the perch and ruff did not vary significantly according to the length...

Orthoptera as intermediate hosts of Staphylocystis furcata (Stieda, 1862) (Cestoda: Hymenolepididae).

B Rysavý

Folia Parasitologica 36[1] 43-47 (1989)

Cysticercoids of Staphylocystis furcata (Stieda, 1962), the adults of which parasitize the shrews (Soricidae), were found in the thoracic and abdominal cavities of orthopterous insects (Orthoptera, Acridioidea) belonging to five species: Chorthippus apricarius (L.), Chorthippus paralellus (Zett.), Omocestus viridulus (L.), Chrysochraon brachypterus (Ocsk.), and Chrysochraon dispar (Germ.). The cysticercoids are described and their incidence in both sexes of the examined intermediate hosts is compared.

Dynamics of egg production of the cestode Diphyllobothrium dendriticum (Nitzsch, 1824) (Cestoda: Pseudophyllidea) and the concept of fecundity in helminths.

N M Pronin, T M Timoshenko, S D Sanzhieva

Folia Parasitologica 36[1] 49-57 (1989)

The dynamics of egg production of the tapeworm D. dendriticum has been estimated experimentally in nestlings of the herring gull Larus argentatus per day and per reproductive period. Numbers of eggs in strobilae have been estimated for the maturation period. Mean egg production, of one tapeworm per day (10.42 +/- 2.72 mln) is two orders of magnitude as high as the maximal number of eggs in a mature strobila (0.206 +/- 0.007). It is proposed to estimate the coefficient of reproduction intensity as the ratio of egg output per unit of time and maximum egg numbers in a mature strobila.

Purification and properties of cytoplasmic malate dehydrogenase from Taenia crassiceps (Zeder, 1800) cysticerci.

J Zenka, J Prokopic

Folia Parasitologica 36[1] 59-65 (1989)

Malate dehydrogenase (L-malate: NAD oxidoreductase, EC from the cytoplasm of Taenia crassiceps cysticerci was purified and the basic kinetic parameters of this enzyme were determined. The pH optimum range of enzyme reaction was found to be very wide: 8.8-11.0 for malate oxidation and 6.0-8.5 for oxaloacetate reduction. KM values for oxaloacetate, malate, NAD, and NADH were 7.8.10(-5) M, 1.4.10(-4) M, 1.2.10(-4) M, and 6.10(-5) M, respectively. Malate dehydrogenase activity was inhibited by malate excess. Molecular weight of malate dehydrogenase was 70,800. A comparison of the data obtained with those from other organisms including vertebrates...



Folia Parasitologica 36[1] 65-66 (1989)

Neoascaris vitulorum (Goeze, 1782): a scanning electron microscopy study.

J Prokopic, J Sterba

Folia Parasitologica 36[1] 67 (1989)

The surface structures of male and female head and tail ends of Neoascaris vitulorum were studied by means of scanning electron microscopy. Lips, denticles, spicules in male and caudal end of female were studied in detail.



Folia Parasitologica 36[1] 69-70 (1989)



Folia Parasitologica 36[1] 71 (1989)

Antibody-mediated response of pigeons to Argas polonicus larval feeding and characterization of larval antigen.

F Dusbábek, S Lukes, V Matha, L Grubhoffer

Folia Parasitologica 36[1] 83-92 (1989)

Circulating antibodies to larval Argas polonicus antigen detected in the blood of pigeons by means of ELISA reach their highest level 3-6 days post-tick attachment. During 6-8 days post infestation when most larvae detach from their host, there is an abrupt drop of the antibody level in blood followed by second peak at day 10-15. During the secondary and subsequent infestations the dynamics of the antibody production is analogous, but the maximum absorbance values found are higher with each following infestation. This is in direct correlation with the growth of immune resistance of hosts. The transfer of immunoglobulins of resistant pigeons produces...

Results of the Czechoslovak-Cuban cooperation concerning investigations of ticks and arboviruses transmitted by ticks.

V Cerný, D Málková

Folia Parasitologica 36[1] 93-96 (1989)