Folia Parasitologica, vol. 50 (2003), issue 4

Leishmania tropica (Kinetoplastida: Trypanosomatidae) - a perplexing parasite

Raymond L. Jacobson

Folia Parasitologica 50[4] 241-250 (2003) | 10.14411/fp.2003.042

Leishmania tropica is one of the causative agents of cutaneous leishmaniasis (CL), a disfiguring parasitic disease that recently was found to be viscerotropic. In urban areas it is transmitted from infected individuals by the bite of phlebotomine sand flies to naïve persons (anthroponotic CL). In rural areas animals are thought to be the reservoir, but the full life cycle is still under investigation (zoonotic CL). For many years L. tropica was either confused or merely grouped with L. major while Phlebotomus sergenti was the only proven vector. In recent years new foci have erupted, but few have been investigated....

Myxobolus buckei sp. n. (Myxozoa), a new pathogenic parasite from the spinal column of three cyprinid fishes from the United Kingdom

Matt Longshaw, Paul Frear, Stephen W. Feist

Folia Parasitologica 50[4] 251-262 (2003) | 10.14411/fp.2003.043

Myxobolus buckei sp. n. is described from the spinal column of Leuciscus cephalus (L.), Rutilus rutilus (L.) and Abramis brama (L.) from freshwater rivers in the North of England. The plasmodia develop within the remnants of the embryonic notochord in the intervertebral spaces. The spores are large, measuring (in µm) 14.0 ± 0.7 × 11.5 ± 0.6 (mean ± SD), smooth, round to ellipsoid in valvular view with several sutural edge markings. The polar capsules are pyriform and of equal size, measuring 7.5 ± 0.5 × 4.2 ± 0.2 (mean ± SD), with 11-12 turns of the polar filament arranged...

New data on Myxobolus longisporus (Myxozoa: Myxobolidae), a gill infecting parasite of carp, Cyprinus carpio haematopterus, from Chinese lakes

Iva Dyková, Ivan Fiala, Pin Nie

Folia Parasitologica 50[4] 263-268 (2003) | 10.14411/fp.2003.044

The original description of Myxobolus longisporus Nie et Li, 1992, the species infecting gills of Cyprinus carpio haematopterus L., is supplemented with new data on the spore morphology and pathogenicity. Spores are elongate pyriform with pointed anterior end, 15.7 (15.5-16.5) µm long, 6.7 (6-8) µm wide and 5.5 µm thick. Sutural ridge is straight and narrow. Mucus envelope is lacking. Two equal-sized elongate pyriform polar capsules are 8.5 µm long and 2.5 µm wide with convergent long axes. Polar filament coiled perpendicularly to the long axis of the capsule makes 9 (8-10) turns. Posterior end of polar capsules...

Ellipsomyxa gobii gen. et sp. n. (Myxozoa: Ceratomyxidae) in the common goby Pomatoschistus microps (Teleostei: Gobiidae) from Denmark

Marianne Køie

Folia Parasitologica 50[4] 269-271 (2003) | 10.14411/fp.2003.045

A new myxosporean species Ellipsomyxa gobii gen. et sp. n. is described from the common goby Pomatoschistus microps (Krøyer) (Perciformes, Gobiidae). Plasmodia with long branched pseudopodia in the gallbladder develop to subspherical bisporous plasmodia. The myxospores were found in the gallbladder, and the hepatic and bile ducts. The new genus is characterised by the morphology of the myxospores. The myxospores have smooth thin valves elongated in the direction perpendicular to the plane of the straight central transverse indistinct sutural line. The two spherical polar capsules open some distance from the sutural line on opposite...

Annulotrematoides bryconi sp. n. (Monogenea: Dactylogyridae) parasitic on Brycon cephalus (Osteichthyes: Characidae) from Brazil

Ana Maria Cuglianna, Nelsonda Silva Cordeiro, José Luis Luque

Folia Parasitologica 50[4] 272-274 (2003) | 10.14411/fp.2003.046

Annulotrematoides bryconi sp. n. is described and illustrated from specimens collected from gills of characiform fish, Brycon cephalus (Günther, 1869), in pisciculture ponds from Pirassununga, São Paulo, Brazil. Diagnostic characters of the new species are the tegument of trunk showing annulations, except on the cephalic regiona, and copulatory complex comprising sclerotized male copulatory organ coiled in 11/2 rings. This is the first record of monogeneans parasitic on the gills of B. cephalus.

Ultrastructure of Archigetes sieboldi (Cestoda: Caryophyllidea): relationship between progenesis, development and evolution

Larisa G. Poddubnaya, John S. Mackiewicz, Boris I. Kuperman

Folia Parasitologica 50[4] 275-292 (2003) | 10.14411/fp.2003.047

Ultrastructural characteristics of progenetic and monoxenic Archigetes sieboldi Leuckart, 1878 from the oligochaete Limnodrilus hoffmeisteri Claparède are described. Our observations demonstrate that progenetic Archigetes sieboldi shares characteristics of both larval (progenetic) and adult stages. The primary larval characteristics are: the presence of a cercomer; a surface filamentous coat covering the whole worm; the presence of the penetration glands and the absence of tegumental ones; wide sarcoplasmic processes connecting the circular and longitudinal external tegumental muscles; the absence of the dense homogenous...

Neoechinorhynchus (Neoechinorhynchus) zabensis sp. n. (Acanthocephala: Neoechinorhynchidae) from freshwater fish in northern Iraq

Omar M. Amin, Shamall M.A. Abdullah, Furhan T. Mhaisen

Folia Parasitologica 50[4] 293-297 (2003) | 10.14411/fp.2003.048

Neoechinorhynchus (Neoechinorhynchus) zabensis sp. n. (Acanthocephala: Neoechinorhynchidae) is described from Capoeta damascina (Valenciennes, 1842) (type host) and Capoeta trutta (Heckel, 1843) in the Greater and Lesser Zab Rivers, northern Iraq. The new species is unique among all other species of the genus by its characteristic paired para-vaginal muscular appendage and fragmented giant nuclei in the lemnisci. Eleven of the other 88 valid species of Neoechinorhynchus and N. zabensis have middle and posterior hooks of equal length. However, N. zabensis is distinguished from the others by size...

Observations on the metazoan parasites of the Atlantic salmon (Salmo salar) after its reintroduction into the Elbe River basin in the Czech Republic

František Moravec

Folia Parasitologica 50[4] 298-304 (2003) | 10.14411/fp.2003.049

In the years 1999-2002, first studies were carried out on the metazoan parasites of Atlantic salmon (Salmo salar L.) recently reintroduced into the Elbe River drainage system, after more than 50 years after the complete extinction of the Elbe salmon population. A total of six helminth species were recorded from salmon smolts from three streams of the Elbe River basin (Kamenice River, Ještědský and Libočanský Brooks) in North Bohemia, Czech Republic, where S. salar fingerlings have been released since 1998: Gyrodactylus truttae Gläser, 1974, Crepidostomum metoecus Braun, 1900, Diplostomum spathaceum (Rudolphi, 1819)...

Modulation of human lymphocyte proliferation by salivary gland extracts of ixodid ticks (Acari: Ixodidae): effect of feeding stage and sex

Terézia Rolníková, Mária Kazimírová, Milan Buc

Folia Parasitologica 50[4] 305-312 (2003) | 10.14411/fp.2003.050

Ixodid ticks remain attached to their hosts for several days to weeks. During this extended feeding process new proteins involved in the modulation of host immune responses are expressed in tick salivary glands. In our study a stimulatory or inhibitory effect of salivary gland extracts (SGE) of unfed and partially fed female Ixodes ricinus (Linnaeus, 1758), female and male Amblyomma variegatum (Fabricius, 1794) and Rhipicephalus appendiculatus Neumann, 1901 ticks on human lymphocyte proliferation induced by Concanavalin A (ConA) and phytohaemagglutinin (PHA), respectively, was investigated. SGE of all female ticks examined suppressed...

Ephemera strigata imagoes are the likely source of a parasitic nematode infection of fish

Riyo Hirasawa, Masahide Yuma

Folia Parasitologica 50[4] 313-314 (2003) | 10.14411/fp.2003.051

Path coeficient analysis of correlation between breeding cycles of the common myna Acridotheres tristis (Passeriformes: Sturnidae) and its phthirapteran ectoparasites

Roshani Srivastava, Sandeep Kumar, Nidhi Gupta, Suneel Kumar Singh, Arun Kumar Saxena

Folia Parasitologica 50[4] 315-316 (2003) | 10.14411/fp.2003.052