Folia Parasitologica, vol. 46 (1999), issue 4

Comparative studies on carbohydrates of several myxosporean parasites of fish using lectin histochemical methods

Pilar Muñoz, Oswaldo Palenzuela, Pilar Alvarez-Pellitero, Ariadna Sitjà-Bobadilla

Folia Parasitologica 46[4] 241-247 (1999)

A histochemical study using lectin methods was performed on myxosporean parasites from vastly different fish hosts from marine and fresh waters. Six biotinylated lectins were used (WGA, SBA, BS-I, Con-A, UEA-I and SNA). The binding pattern of Con-A and WGA revealed the presence of mannose and/or glucose, and N-acetyl-D-glucosamine respectively, in polar capsules and valves of most of the myxosporea assayed. Thus, chitin may be present in polar capsules and/or valves of myxosporean spores. The BS-I binding pattern showed the presence of α-D-galactose and/or N-acetyl-D-galactosamine residues in polar capsules of Kudoa sp., Zschokkella...

Description of a new flagellate protist Desmomonas prorhynchi gen. et sp. n. associated with problematical cell masses, parasitic in the turbellarian Prorhynchus sp. (Lecithoepitheliata)

Joan B. Williams

Folia Parasitologica 46[4] 248-256 (1999)

The fine structure is described of a new nonphotosynthetic flagellate, named Desmomonas prorhynchi gen. et sp. n., endoparasitic in the lecithoepitheliate turbellarian Prorhynchus sp. The flagellates surround cell masses enveloped by a protective wall, to which adhere many small, regularly arranged cylindroid bodies; these structures are reminiscent of epicuticular projections characterising the body walls of some oligochaetes and polychaetes. The cells of a cell mass are joined to the enveloping wall by spot hemidesmosomes. Their cytoplasm contains Golgi systems, mitochondria, fibrillar dense bodies, paired centrioles, and rod-shaped...

Discovery of the life cycle of Sarcocystis lacertae Babudieri, 1932 (Apicomplexa: Sarcocystidae), with a species redescription

Jiøí Volf, David Modrý, Bøetislav Koudela, Jan R. ©lapeta

Folia Parasitologica 46[4] 257-262 (1999)

Oocysts/sporocysts of Sarcocystis sp. were found in the intestinal contents of the smooth snake, Coronella austriaca Laurenti. Common voles Microtus arvalis (Pallas), bank voles Clethrionomys glareolus (Schreber), green lizards Lacerta viridis (Laurenti), and common wall lizards Podarcis muralis (Laurenti) were experimentally inoculated as potential intermediate hosts. Only common wall lizards were found to be susceptible intermediate hosts. Transparent, macroscopically hardly visible sarcocysts found in tail striated muscles of lizards were 480 (390-640) × 210 (190-230) µm in size 72 days post-infection....

Hemibranch preference by freshwater monogeneans a function of gill area, water current, or both?

Pablo A. Gutiérrez, Sergio R. Martorelli

Folia Parasitologica 46[4] 263-266 (1999)

Differences in the occurrence of monogeneans on lamellae of fish gill arches were observed in this study. These differences were attributed to variations in water current on the gill surfaces or to greater area of certain arches. Two computer simulation programs based on gill area and water current were written to generate parasite metapopulations with clumped patterns. The results obtained were compared with true distributions of selected freshwater monogenean taxa. The combination of both theoretical models (gill area and water current) had greater explanatory power than either of the models alone.

Monogeneans of freshwater fishes from cenotes (sinkholes) of the Yucatan Peninsula, Mexico

Edgar F. Mendoza-Franco, Tomá¹ Scholz, Clara Vivas-Rodríguez, Joaquín Vargas-Vázquez

Folia Parasitologica 46[4] 267-273 (1999)

During a survey of the parasites of freshwater fishes from cenotes (sinkholes) of the Yucatan Peninsula the following species of monogeneans were found on cichlid, pimelodid, characid and poeciliid fishes: Sciadicleithrum mexicanum Kritsky, Vidal-Martinez et Rodriguez-Canul, 1994 from Cichlasoma urophthalmus (Günther) (type host), Cichlasoma friedrichsthali (Heckel), Cichlasoma octofasciatum (Regan), and Cichlasoma synspilum Hubbs, all new host records; Sciadicleithrum meekii Mendoza-Franco, Scholz et Vidal-Martínez, 1997 from Cichlasoma meeki (Brind); Urocleidoides chavarriai (Price, 1938) and...

Empruthotrema quindecima sp. n. (Monogenea: Monocotylidae) from the nasal fossae of Taeniura lymma (Dasyatididae) from Heron Island and Lizard Island, Great Barrier Reef, Queensland, Australia

Leslie A. Chisholm, Ian D. Whittington

Folia Parasitologica 46[4] 274-278 (1999)

Empruthotrema quindecima sp. n. (Monogenea: Monocotylidae) is described from the nasal fossae of the blue-spotted fantail ray Taeniura lymma (Forsskål, 1775) collected from the reef flats of Heron Island and Lizard Island located at the southern and northern sections, respectively, of the Great Barrier Reef in Queensland, Australia. Empruthotrema quindecima has 15 marginal loculi on the haptor which distinguishes it from the other five members of the genus which have either 13 or 14 marginal loculi. The generic diagnosis of Empruthotrema Johnston et Tiegs, 1922 is amended to accommodate the new species, a key to species...

Regional ultrastructural differences of the scolex and neck tegument of Proteocephalus macrocephalus (Eucestoda: Proteocephalidae)

Zdeòka ®ïárská, Jana Nebesáøová

Folia Parasitologica 46[4] 279-283 (1999)

Structural differences of microtriches and distal cytoplasm of the tegument in the apical and lateral suckers, scolex proper and neck of Proteocephalus macrocephalus (Creplin,1815) were studied. The microthrix border in the apical sucker is formed by filamentous microtriches only. The frontal and lateral parts of scolex bear mainly filamentous microtriches, but seldom short conoid types occur. The transitional zone between scolex and neck is covered mainly with short conoid microtriches. The neck bears blade-like microtriches. In the apical and lateral suckers, the basal plasma membrane of the distal cytoplasm adheres to the basal lamina at...

Redescription of Eucoleus schvalovoj (Nematoda: Capillariidae), an oesophageal parasite of the Eurasian otter, Lutra lutra, in Spain

Jordi Torres, Jordi Miquel, Carlos Feliu

Folia Parasitologica 46[4] 285-288 (1999)

Eucoleus schvalovoj Kontrimavichus, 1963 (Nematoda: Capillariidae) is redescribed. The original description of this species was brief and inadequate in that it was based on just a few specimens removed from the Eurasian otter, Lutra lutra (Linnaeus, 1758) in the Khabarovsk region, USSR. Detailed morphological study of several specimens of E. schvalovoj from the oesophagus of L. lutra from Spain revealed new characters, above all in males, and allows for a better characterisation of this species. Since its original description E. schvalovoj has only been recorded in Spain.

Observations on cucullanid nematodes from freshwater fishes in Mexico, including Dichelyne mexicanus sp. n.

Juan Manuel Caspeta-Mandujano, Franti¹ek Moravec, Guillermo Salgado-Maldonado

Folia Parasitologica 46[4] 289-295 (1999)

A new cucullanid nematode, Dichelyne mexicanus sp. n., is described from the intestine of three species of fishes, Agonostomus monticola (Bancroft) (Mugilidae, Perciformes) (type host), Ictalurus balsanus (Jordan et Snyder) (Ictaluridae, Siluriformes) and Cichlasoma beani (Jordan) (Cichlidae, Perciformes), from three rivers (La Maquina River, Veracruz; Chontalcoatlán River, Guerrero and Santiago River, Nayarit) in central Mexico. This species is characterised by the absence of a ventral sucker in the male (subgenus Dichelyne) and it differs from its congeners mainly in possessing very unequal and dissimilar spicules...

Some nematodes and acanthocephalans from exotic ornamental freshwater fishes imported into Germany

Franti¹ek Moravec, Jan Wolter, Wolfgang Körting

Folia Parasitologica 46[4] 296-310 (1999)

Five species of adult nematodes, unidentifiable nematode larvae, and three species of acanthocephalans, were found in freshwater ornamental fishes newly imported into Germany from Brazil, Colombia, Indonesia, Malaysia, Nigeria, Peru, Sri Lanka and Thailand. The following species were identified: Adult Nematoda: Pseudocapillaria tomentosa, Capillariidae gen. sp., Dichelyne hartwichi sp. n., Procamallanus (Spirocamallanus) pintoi and Spinitectus allaeri; Acanthocephala: Pseudogorgorhynchus arii gen. et sp. n., Neoechinorhynchus sp. and Pallisentis sp. The nematode Dichelyne hartwichi...

Hypoechinorhynchus robustus sp. n. from Notolabrus parilus (Labridae) from Western Australia with a discussion on the validity of the Hypoechinorhynchidae (Acanthocephala: Palaeacanthocephala)

Sylvie Pichelin

Folia Parasitologica 46[4] 311-315 (1999)

Hypoechinorhynchus robustus sp. n. is described from Notolabrus parilus (Richardson) (Labridae) from Pt Peron, Western Australia. It has a proboscis with 30 hooks arranged in ten longitudinal rows: 5 rows of a small apical spine, a large anterior hook and a small posterior spine, 5 rows of a large anterior hook, a middle spine and a posterior spine. The new species is distinguished from other species of the genus by having a set of 5 small apical spines anterior to the large hooks on the proboscis, by having lemnisci that barely extend beyond the proboscis receptacle and testes which are more adjacent than tandem. H. robustus also...

Trichoecius calomysci sp. n. (Acari: Myocoptidae), a new mite species from Iran

Andre Bochkov, Vladimir Malikov, Masoud Arbobi

Folia Parasitologica 46[4] 316-318 (1999)

A new species of myocoptid mite, Trichoecius calomysci sp. n. (Acari: Myocoptidae), from Calomyscus sp. (Rodentia: Cricetidae) from Iran is described.

Chonopeltis liversedgei sp. n. (Crustacea: Branchiura), parasite of the Western bottlenose Mormyrus lacerda (Mormyridae) from the Okavango Delta, Botswana

Jo G. Van As, Liesl L. Van As

Folia Parasitologica 46[4] 319-325 (1999)

A new species Chonopeltis liversedgei sp. n. of the endemic African genus Chonopeltis Thiele, 1900 (Crustacea: Branchiura) is described. This ectoparasite inhabits the branchial chamber of its mormyrid host Mormyrus lacerda Castelnau, 1861 and was collected from three localities in the Okavango River and its inland Delta in Botswana, Southern Africa.