Folia Parasitologica - Most viewed articles

Morphological and molecular analysis of Spinitectus notopteri (Nematoda: Cystidicolidae) from freshwater fish in Thailand

Kanda Kamchoo, Watcharasuda Hualkasin, Pojchanad Pathaburee, Adithepchaikarn Pachanawan

Folia Parasitologica 71:024 (2024) | DOI: 10.14411/fp.2024.024  

The nematode Spinitectus notopteri Karve et Naik, 1951 was collected from two species of freshwater fish belonging to the family Notopteridae, namely Chitala ornata (Gray) and Notopterus notopterus (Pallas), at Khun Thale Swamp in Surat Thani province of southern Thailand. The overall prevalence of the parasite was found to be 88% (94 fish infected/106 fish examined). A higher prevalence was found in C. ornata (96%), while a higher intensity was noted for N. notopterus (117 parasites/fish). The most important morphological characters were the presence of cephalic and cuticular structures, precloacal...

Tetraphyllidean metacestodes of teleosts of the Great Barrier Reef, and the use of in vitro cultivation to identify them

Clinton B. Chambers, Thomas H. Cribb, Malcolm K. Jones

Folia Parasitologica 47[4] 285-292 (2000) | DOI: 10.14411/fp.2000.050  

The tetraphyllidean metacestode diversity of 310 teleost fishes, including 87 species from 31 families, was examined from Heron Island, The Great Barrier Reef, Australia. Eleven metacestode 'types' were identified with the use of light microscopy. Host-specificity varied greatly among metacestode types. Incorporation of in vitro cultivation allowed generic identification for some types. Types 1 and 2 belong to Uncibilocularis Southwell, 1925, and have triloculate bothridia and one pair of forked hooks with unequal prongs; Type 3 has quadriloculate bothridia. Hook development was insufficient to determine in which genus, Acanthobothrium...

Grillotia borealis sp. n. (Cestoda: Trypanorhyncha) from five species of Bathyraja (Rajiformes: Arhynchobatidae) in the North Pacific Ocean with comments on parasite enteric distribution

Devon B. Keeney, Ronald A. Campbell

Folia Parasitologica 48[1] 21-29 (2001) | DOI: 10.14411/fp.2001.005  

A new trypanorhynch cestode, Grillotia borealis sp. n., is described from the spiral intestines of softnose skates of the genus Bathyraja collected from subarctic waters of the North Pacific Ocean: B. parmifera (Bean) (type host), B. aleutica (Gilbert) and B. interrupta (Gill et Townsend) from the Bering Sea and B. minispinosa Ishiyama et Ishihara and B. smirnovi (Soldatov et Pavlenko) from the Sea of Okhotsk off Japan. The new species is distinguished from other species of Grillotia by possession of the following combination of characters: four hooks per principal row, hooks 4(4') distinctly...

Gill parasites of Cephalopholis argus (Teleostei: Serranidae) from Moorea (French Polynesia): site selection and coexistence

Cédrik M. Lo, Serge Morand

Folia Parasitologica 48[1] 30-36 (2001) | DOI: 10.14411/fp.2001.006  

The distribution and coexistence of gill ectoparasites of 121 specimens of Cephalopholis argus Bloch et Schneider, caught between October 1994 and October 1995, were investigated. Adults of the monogenean Benedenia sp. and copepod Hatschekia sp., the larval caligid copepod Caligus sp. (copepodite and chalimus stages), and praniza larvae of the isopod Gnathia sp. were found. All species were aggregated within the host population. Infracommunities were poor, with only 40.5% of fish infected by two parasite species. Only two individual fish harboured all the parasite species observed at the component community level....

Growth of Trachipleistophora hominis (Microsporidia: Pleistophoridae) in C₂,C₁₂ mouse myoblast cells and response to treatment with albendazole

Nathalie J. Lafranchi-Tristem, Alan Curry, Sarah A. Cheney, Elizabeth U. Canning

Folia Parasitologica 48[3] 192-200 (2001) | DOI: 10.14411/fp.2001.032  

The microsporidium Trachipleistophora hominis Hollister, Canning, Weidner, Field, Kench et Marriott, 1996, originally isolated from human skeletal muscle cells, inhibited myotube formation from myoblasts when grown in a mouse myoblast cell line C₂,C₁₂. Uninfected cultures readily converted to myotubes. Albendazole, a drug with known antimicrosporidial activity, was tested against T. hominis in C₂,C₁₂ cells. The drug was added when infection had reached 75% of C₂,C₁₂ cells, a level comparable to that obtained in heavily infected muscle in vivo. Doses of 1 ng/ml and...

A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect

Florencia Cremonte, Marina Andrea Kroeck, Sergio Roberto Martorelli

Folia Parasitologica 48[3] 217-223 (2001) | DOI: 10.14411/fp.2001.035  

An unnamed microcercous cercaria (Digenea: Monorchiidae), a parasite of Amiantis purpurata (Lamarck, 1818) (Bivalvia: Veneridae) and its corresponding metacercaria from the province of Buenos Aires and the Patagonian coast of the Southwest Atlantic Ocean, are described. The cercaria described in this paper differs from the three other monorchiid microcercous cercariae, i.e., Lasiotocus minutus (Manter, 1931), Lasiotocus elongatus (Manter, 1931), and Cercaria caribbea XXXVI Cable, 1956, mainly because of the extension of the excretory vesicle and the location of the ventral sucker. Cercariae artificially extracted from sporocysts...

Development and release of a malacosporean (Myxozoa) from Plumatella repens (Bryozoa: Phylactolaemata)

David John Morris, Donald Charles Morris, Alexandra Adams

Folia Parasitologica 49[1] 25-34 (2002) | DOI: 10.14411/fp.2002.008  

During an experiment to transmit Tetracapsula bryosalmonae Canning, Curry, Feist, Longshaw et Okamura, 1999 to a laboratory-cultured bryozoan, Plumatella repens L. a previously undescribed malacosporean species was noted. This parasite produced sacs of spores in the host that reached 1.2 mm in length. The spores released from the sacs appeared similar in size to the two species of Tetracapsula previously described although slight differences in form were noted. Release of spores from the bryozoans was observed associated with the lophophore of the host. The use of experimental bryozoan cultures for the examination of malacosporeans...

Two new nematodes, Paraseuratoides ophisterni gen. et sp. n. (Quimperiidae) and Philometra ophisterni sp. n. (Philometridae), from the swamp-eel Ophisternon aenigmaticum in Mexico

František Moravec, Guillermo Salgado-Maldonado, Rogelio Aguilar-Aguilar

Folia Parasitologica 49[2] 109-117 (2002) | DOI: 10.14411/fp.2002.021  

Two new nematodes, Paraseuratoides ophisterni gen. et sp. n. (Seuratoidea: Quimperiidae) and Philometra ophisterni sp. n. (Dracunculoidea: Philometridae) are described based on specimens recovered from the intestine and mesentery, respectively, of the swamp-eel Ophisternon aenigmaticum Rosen et Greenwood (Synbranchiformes: Synbranchidae) from a canal of the Papaloapan River in Tlacotalpan, State of Veracruz, Mexico. The genus Paraseuratoides is most similar to Paraseuratum Johnston et Mawson, 1940, differing from it mainly in the absence of a bulbous inflation on the anterior end of the oesophagus and in the structure...

Effect of fast protein liquid chromatography fractionated salivary gland extracts from different ixodid tick species on interleukin-8 binding to its cell receptors

Paulína Kocáková, Monika Sláviková, Valéria Hajnická, Mirko Slovák, Juraj Gašperík, Iveta Vančová, Norbert Fuchsberger, Patricia A. Nuttall

Folia Parasitologica 50[1] 79-84 (2003) | DOI: 10.14411/fp.2003.014  

Interleukin-8 plays a critical role in inflammatory processes. Hence generation of molecules with anti-IL-8 activity is likely to be important for successful feeding and for survival of the ticks. Anti-IL-8 activity was studied in saliva of three ixodid tick species - Dermacentor reticulatus (Fabricius, 1794), Rhipicephalus appendiculatus Neumann, 1901, and Amblyomma variegatum (Fabricius, 1794). The greatest activity was shown in saliva prepared from D. reticulatus. The activity was attributed to tick salivary gland molecules that bind to IL-8, preventing binding of the chemokine to its specific receptor, rather than to...

Henneguya curvata sp. n. (Myxosporea: Myxobolidae) parasitizing the gills of Serrasalmus spilopleura (Characidae: Serrasaminae), a South American freshwater fish

Bianca Barassa, Edson A. Adriano, Sarah Arana, Nelson S. Cordeiro

Folia Parasitologica 50[2] 151-153 (2003) | DOI: 10.14411/fp.2003.026  

Nuclearia pattersoni sp. n. (Filosea), a new species of amphizoic amoeba isolated from gills of roach (Rutilus rutilus), and its rickettsial endosymbiont

Iva Dyková, Marie Veverková, Ivan Fiala, Blanka Macháčková, Hana Pecková

Folia Parasitologica 50[3] 161-170 (2003) | DOI: 10.14411/fp.2003.030  

A new species of amphizoic amoeba, Nuclearia pattersoni sp. n., isolated from gills of Rutilus rutilus L. is described. It is characterised by elongate flattened trophozoites of irregular shape. The longer dimension of their bodies is 13.2 (11.0-15.7) µm. Filopodia radiating mostly from the poles are 2 to 2.5 times longer than the body. The diameter of less frequently observed spherical trophozoites is 8.2-10.8 µm; their filopodia radiate to all directions. Cyst-like stages have shorter pseudopodia that arise from one pole only. The surface of locomotive forms from agar plate cultures has a thin amorphous glycocalyx, while...

Observations on the distribution and biology of Huffmanela huffmani (Nematoda: Trichosomoididae)

Marlin K. Cox, David G. Huffman, František Moravec

Folia Parasitologica 51[1] 50-54 (2004) | DOI: 10.14411/fp.2004.007  

The nematode parasite Huffmanela huffmani Moravec, 1987 (Trichosomoididae) infects swimbladders of fishes in the family Centrarchidae. Only fish collected from the upper San Marcos River (Texas) have been found infected with H. huffmani eggs with a prevalence of 90%. Hundreds of thousands of H. huffmani eggs have been observed in these fish but only a few specimens of adult worms have ever been found. The San Marcos River arises from springs along the Balcones Fault Zone in San Marcos, Hays County, Texas. The restriction of the parasite to the upper San Marcos River and the high prevalence of the parasite eggs in centrarchids would...

Effect of tick salivary gland extract on the cytokine production by mouse epidermal cells

Jitka Pechová, Jan Kopecký, Jiří Salát

Folia Parasitologica 51[4] 367-372 (2004)  

Previous studies have demonstrated that both tick saliva and Borrelia burgdorferi sensu lato antigens modulate the cytokine response of the host. In this paper, the effect of salivary gland extract (SGE) from Ixodes ricinus (L., 1758) ticks on cytokine production by primary cultures of mouse epidermal cells stimulated with Borrelia afzelii Canica, Nato, du Merle, Mazie, Baranton et Postic, 1993 spirochetes was analysed. Epidermal cells were derived from C3H/HeN mice, susceptible to Lyme disease, and BALB/c mice, which are resistant. In cultures from C3H/HeN mice, SGE down regulated production of tumour necrosis factor alpha (TNF-α)...

Comparative genomics of microsporidia

Patrick J. Keeling, Naomi M. Fast, Joyce S. Law, Bryony A.P. Williams, Claudio H. Slamovits

Folia Parasitologica 52[1/2] 8-14 (2005) | DOI: 10.14411/fp.2005.002  

Microsporidia have been known for some time to possess among the smallest genomes of any eukaryote. There is now a completely sequenced microsporidian genome, as well as several other large-scale sequencing efforts, so the nature of these genomes is becoming apparent. This paper reviews some of the characteristics of microsporidian genomes in general, and some of the recent discoveries made through comparative genomic analyses. In general, microsporidian genomes are both reduced and compacted. Reduction takes place through gene loss, which is understandable in obligate intracellular parasites that rely on their host for many metabolites. Compaction...

Microgemma vivaresi (Microsporidia: Tetramicridae): host reaction to xenomas induced in sea scorpions, Taurulus bubalis (Osteichthyes: Cottidae)

Elizabeth U. Canning, Alan Curry

Folia Parasitologica 52[1/2] 95-102 (2005) | DOI: 10.14411/fp.2005.012  

Xenomas caused by Microgemma vivaresi Canning, Feist, Longshaw, Okamura, Anderson, Tsuey Tse et Curry, 2005 were found in liver and skeletal muscle of sea scorpions, Taurulus bubalis (Euphrasen). All muscle xenomas examined were in an advanced stage of destruction. In developing xenomas found in liver, parasites were restricted to the centre of the cell, separated from a parasite-free zone by a nuclear network formed by branching of the host cell nucleus. Although xenomas were able to reach a size of several hundred microns, the surface remained a simple plasma membrane. Host reactions took the form of penetration by phagocytes and isolation...

Multinucleate host cells induced by Vittaforma corneae (Microsporidia)

Gordon J. Leitch, Andrew P. Shaw, Margaret Colden-Stanfield, Mary Scanlon, Govinda S. Visvesvara

Folia Parasitologica 52[1/2] 103-110 (2005) | DOI: 10.14411/fp.2005.013  

The microsporidium Vittaforma corneae (Shadduck, Meccoli, Davis et Font, 1990) develops within the target cell cytoplasm. In the present study, green monkey kidney (E6) cells infected at 30°C, 35°C or 37°C with V. corneae developed enlarged multinucleate structures of up to 200 µm in any horizontal dimension made up either of a single cell or of multiple fused cells. A number of epithelial cell types (SW-480, HT-29, Caco-2 and HCT-8) were infected with V. corneae but did not induce the same highly organized structures, suggesting that for the structure to develop, the host cell must be capable of continued mitosis, and not...

The early events of Brachiola algerae (Microsporidia) infection: spore germination, sporoplasm structure, and development within host cells

Peter M. Takvorian, Louis M. Weiss, Ann Cali

Folia Parasitologica 52[1/2] 118-129 (2005) | DOI: 10.14411/fp.2005.015  

Brachiola algerae (Vavra et Undeen, 1970) Lowman, Takvorian et Cali, 2000, originally isolated from a mosquito, has been maintained in rabbit kidney cells at 29°C in our laboratory. This culture system has made it possible to study detailed aspects of its development, including spore activation, polar tube extrusion, and the transfer of the infective sporoplasm. Employing techniques to ultrastructurally process and observe parasite activity in situ without disturbance of the cultures has provided details of the early developmental activities of B. algerae during timed intervals ranging from 5 min to 48 h. Activated and non-activated spores...

Morphological, developmental and ecological evidence for a progenetic life cycle in Neochasmus (Digenea)

J. Daniel McLaughlin, David J. Marcogliese, Jocelyn Kelly

Folia Parasitologica 53[1] 44-52 (2006) | DOI: 10.14411/fp.2006.003  

Seven species of fishes, Catostomus commersonii (Lacépède), Etheostoma nigrum Rafinesque, Micropterus dolomieu Lacépède, Notemigonus crysoleucas (Mitchill), Notropis hudsonius (Clinton), Perca flavescens (Mitchill), and Percina caprodes (Rafinesque) from the St. Lawrence River, Quebec, Canada, were found infected with progenetic specimens of Neochasmus spp. in the orbits and/or the body musculature. Worms displayed varying degrees of maturation. Eggs occupied the entirety of the worm in late stages of development and persisted as distinct clusters in situ after worm death. Populations...

Virulent and attenuated lines of Leishmania major: DNA karyotypes and differences in metalloproteinase GP63

Jovana Sádlová, Petr Volf, Kathleen Victoir, Jean-Claude Dujardin, Jan Votýpka

Folia Parasitologica 53[2] 81-90 (2006) | DOI: 10.14411/fp.2006.011  

The Leishmania metalloproteinase GP63 has been reported to play important roles mainly in resistance of promastigotes to complement-mediated lysis and in interaction with macrophage receptors. On the other hand, its function in insect vectors is still unclear. We compared the structure and dosage of gp63 genes and the activity of GP63 in Leishmania major Yakimoff et Schokhor strains and lines differing in virulence for mice and ability to develop in sand flies. The results demonstrate considerable variability in amount and proteolytical activity of GP63 among L. major strains although genomic changes in the gp63 locus...

Temporal and spatial distribution of glochidial larval stages of European unionid mussels (Mollusca: Unionidae) on host fishes

Radim Blažek, Milan Gelnar

Folia Parasitologica 53[2] 98-106 (2006) | DOI: 10.14411/fp.2006.013  

Glochidia are the larval stage of freshwater unionid mussels that parasitize the fins and gill apparatus of fish. A total of 22 fish species were examined for the presence of glochidia whose distribution on individual hosts was studied on three common fish species, the roach Rutilus rutilus (L.), perch Perca fluviatilis L. and bitterling Rhodeus sericeus (Pallas). Between 1997 and 1999, the fish were obtained from the rivers Morava and Kyjovka and surrounding water pools in the Czech Republic. The glochidia of two genera, Unio and Anodonta, were found. Anodonta glochidia were observed on 10 fish species, Unio...

Some camallanid nematodes from marine perciform fishes off New Caledonia

František Moravec, Jean-Lou Justine, Mark C. Rigby

Folia Parasitologica 53[3] 223-239 (2006) | DOI: 10.14411/fp.2006.029  

Two new, one known and three unidentified species of the nematode family Camallanidae are reported and described from the intestines of marine perciform fishes off the southwestern coast of New Caledonia, South Pacific: Camallanus carangis Olsen, 1952 from the forked-tailed threadfin bream Nemipterus furcosus (Nemipteridae), the yellowstriped goatfish Upeneus vittatus and the whitesaddle goatfish Parupeneus ciliatus (both Mullidae) (new host records); Procamallanus (Spirocamallanus) variolae sp. n. from the white-edged lyretail Variola albimarginata (type host) and the blacktip grouper Epinephelus...

A new fish haemogregarine from South Africa and its suspected dual transmission with trypanosomes by a marine leech

Polly M. Hayes, Nico J. Smit, Alan M. Seddon, David F. Wertheim, Angela J. Davies

Folia Parasitologica 53[4] 241-248 (2006) | DOI: 10.14411/fp.2006.031  

Twenty two percent (22/98) of intertidal fishes of 10 species captured in South Africa at Koppie Alleen, De Hoop Nature Reserve (south coast) and Mouille Point, Cape Town (west coast), harboured single or combined infections of haemogregarines, trypanosomes and an intraerythrocytic parasite resembling a Haemohormidium sp. The haemogregarines included the known species Haemogregarina (sensu lato) bigemina (Laveran et Mesnil, 1901) Siddall, 1995 and Haemogregarina (sensu lato) koppiensis Smit et Davies, 2001, while Haemogregarina (sensu lato) curvata sp. n. was observed in Clinus cottoides Valenciennes...

Invalidity of three Palaearctic species of Triaenophorus tapeworms (Cestoda: Pseudophyllidea): evidence from morphometric analysis of scolex hooks

Roman Kuchta, Romana Vlčková, Larisa G. Poddubnaya, Andrea Gustinelli, Ewa Dzika, Tomáš Scholz

Folia Parasitologica 54[1] 34-42 (2007) | DOI: 10.14411/fp.2007.005  

A comparative study of the scolex hook morphology of five species of tapeworms of the genus Triaenophorus Rudolphi, 1793 (Cestoda: Pseudophyllidea), parasites of pikes (Esox lucius L. and E. reichertii Dybowski) in the Palaearctic Region, was carried out. Measurements of scolex hooks of 81 plerocercoids and 492 adults from different hosts and regions were compared using basic statistics and forward stepwise linear discriminant analysis. The shape of the scolex and that of tridental hooks were found to be suitable only for differentiation of the taxa with a similar shape of hooks, i.e. Triaenophorus nodulosus (Pallas, 1781)...

Chigger mites (Acari: Trombiculidae) from wild birds in Costa Rica, with a description of three new species

Alexandr A. Stekol'nikov, Ivan Literák, Miroslav Čapek, Martin Havlíček

Folia Parasitologica 54[1] 59-67 (2007) | DOI: 10.14411/fp.2007.008  

Three new species of chigger mites, Eutrombicula costaricensis sp. n., Eutrombicula passerinorum sp. n., and Eutrombicula hectochaeta sp. n. are described from wild birds from Costa Rica. Two species, Eutrombicula pacae (Floch et Fauran, 1957) and Parasecia fundata (Brennan, 1969), are recorded for the first time in Costa Rica and on new host species. Data on the distribution of Blankaartia sinnamaryi (Floch et Fauran, 1956) in Costa Rica are also reported.

Peptidases of Trichobilharzia regenti (Schistosomatidae) and its molluscan host Radix peregra s. lat. (Lymnaeidae): construction and screening of cDNA library from intramolluscan stages of the parasite

Kateřina Dolečková, Martin Kašný, Libor Mikeš, Francisca Mutapi, Colin Stack, Adrian P. Mountford, Petr Horák

Folia Parasitologica 54[2] 94-98 (2007) | DOI: 10.14411/fp.2007.012  

Trichobilharzia regenti is a neurotropic bird schistosome, causing cercarial dermatitis in humans. In this study, ZAP cDNA expression library from Radix peregra s. lat. hepatopancreases containing intramolluscan stages of T. regenti was constructed and screened using PCR with specific and degenerate primers, designed according to previously described serine and cysteine peptidases of other parasite species. Full-length sequences of cathepsins B1 and L, and two serine peptidases, named RpSP1 and RpSP2, were obtained. The protein-protein BLAST analysis and parallel control reactions with template from hepatopancreases of T. regenti...

Phylogeny of Coccomyxa (Myxosporea: Myxidiidae) spp. with the description of a new species from Bathygobius cyclopterus (Gobiidae) in the northern Red Sea

Ariel Diamant, Asaf Lipshitz, Michal Ucko

Folia Parasitologica 54[2] 109-116 (2007) | DOI: 10.14411/fp.2007.016  

Two species of Coccomyxa Léger et Hesse, 1907, one of the least studied myxosporean genera, are reported from shallow coastal waters in the Gulf of Eilat, Red Sea, Israel. A new species, Coccomyxa jirilomi sp. n. is described from the spotted frillgoby Bathygobius cyclopterus (Valenciennes) (Gobiidae). It forms polysporous plasmodia that invade the liver and form packed clusters inside the bile ductules. Plasmodia also occur in the bile ducts and gall bladder of the host, attached to the epithelial lining or free floating in the bile. Infected hepatic bile ductules packed with plasmodia were partially occluded, with evidence of...

Ultrastructural description of Ceratomyxa tenuispora (Myxozoa), a parasite of the marine fish Aphanopus carbo (Trichiuridae), from the Atlantic coast of Madeira Island (Portugal)

Graça Casal, Graça Costa, Carlos Azevedo

Folia Parasitologica 54[3] 165-171 (2007) | DOI: 10.14411/fp.2007.023  

The first ultrastructural description of Ceratomyxa tenuispora Kabata, 1960 (Myxozoa, Bivalvulida) from Madeira Island (Portugal), a parasite found in the gall bladder of the commercially important black-scabbard fish, Aphanopus carbo Lowe is presented. This parasite possesses spherical to ellipsoidal disporous trophozoites. Spores have a central crescent-shaped body averaging 11.0 µm in length, 28.5 µm in thickness and 12.1 µm in width. The valves have two long opposite lateral processes (ribbon-like structures or tails), each averaging 173 µm in length. The total thickness of the spore averages 375 µm....

A new species of Spirophilometra (Nematoda: Philometridae) from the yellowfin snook Centropomus robalito (Osteichthyes) in southern Mexico

František Moravec, Ana María Santana-Piñeros, David González-Solís, Ana María Torres-Huerta

Folia Parasitologica 54[3] 215-219 (2007) | DOI: 10.14411/fp.2007.029  

A new nematode species, Spirophilometra pacifica sp. n. (Philometridae), is described from gravid female specimens collected from the mouth cavity (the upper palate) of the fish (yellow snook) Centropomus robalito (Centropomidae, Perciformes) from the Chantuto-Panzacola system, Chiapas, in the Pacific coast of Mexico. Its morphology is very similar to that of the species originally described as Philometra centropomi Caballero, 1974, but the gravid females of S. pacifica are about three times longer (body length 11.63-18.17 mm); host species and the geographical distribution of both these forms also differ. Scanning electron...

Redescription of Metabronema magnum (Nematoda: Cystidicolidae), a swimbladder parasite of the carangid fish Gnathanodon speciosus off New Caledonia

František Moravec, Jean-Lou Justine

Folia Parasitologica 54[4] 293-300 (2007) | DOI: 10.14411/fp.2007.038  

The cystidicolid nematode Metabronema magnum (Taylor, 1925) is redescribed from specimens collected from the swimbladder of the fish (golden trevally) Gnathanodon speciosus (Forsskål) (Carangidae, Perciformes) off New Caledonia, South Pacific (a new geographical record). The light and scanning electron microscopical examination made it possible to study in detail the morphology of this so far little-known species. Its pseudolabia were found to possess distinct anterior protrusions (protuberances), sublabia are absent, only four cephalic papillae are present, deirids are bifurcated, and the male possesses six pairs of postanal papillae....

Tapeworms (Cestoda: Proteocephalidea) of firewood catfish Sorubimichthys planiceps (Siluriformes: Pimelodidae) from the Amazon River

Alainde Chambrier, Tomáš Scholz

Folia Parasitologica 55[1] 17-28 (2008) | DOI: 10.14411/fp.2008.004  

A survey of proteocephalidean cestodes found in the firewood catfish Sorubimichthys planiceps (Spix et Agassiz) from the Amazon River is provided. The following taxa parasitic in S. planiceps are redescribed on the basis of their type specimens and material collected recently in the Amazon River, near the type localities in Brazil, and in Iquitos, Peru: Monticellia lenha Woodland, 1933; Nomimoscolex lenha (Woodland, 1933) (syn. Proteocephalus lenha Woodland, 1933); and Monticellia megacephala Woodland, 1934, for which a new genus, Lenhataenia, is proposed, with L. megacephala (Woodland, 1934)...