Abstract:
:Using scanning and transmission electron microscopy, ultrastructure of the anterior organ and posterior funnel-shaped canal of Gyrocotyle urna Wagener, 1852 (Cestoda: Gyrocotylidea) from ratfish, Chimaera monstrosa (Holocephali), was studied for the first time. The proper anterior organ is localised at a short distance (about 170 µm) from an apical pore surrounded by a receptor field, whereas its distal end is marked by a muscular sphincter. The tegumental surface of this organ is covered with short filitriches of irregular length; large area of muscle layers traverse beneath the tegumental layer. The funnel-shaped canal of G. urna (2.5-3.0 mm long) is a specialised, muscular part of the posterior attachment organ; it opens on the rounded elevation on the dorsal body surface. The tegumental layer bears conical sclerite-like structures (up to 1.5 µm long). It produces electron-dense bodies that are transported into a canal lumen and surrounded thick muscle area mixed with numerous nerve fibres. The present ultrastructural study of G. urna indicates that gyrocotylideans share some ultrastructural characters of the anterior organ with spathebothriidean cestodes with a single anterior attachment sucker-like organ. In contrast, the unique posterior rosette attachment organ with funnel-shaped canal of the Gyrocotylidea resembles the haptor of polyopisthocotylean monogeneans in its position at the posterior end of the body and presumed origin. The above-mentioned features add more clarity to support the basal position of the Gyrocotylidea Poche, 1926 among cestodes. In addition, they also indicate a possible relationship of gyrocotylidean ancestors with monogeneans.
journal_name
Folia Parasitol (Praha)journal_title
Folia parasitologicaauthors
Poddubnaya LG,Kuchta R,Bristow GA,Scholz Tdoi
10.14411/fp.2015.027subject
Has Abstractpub_date
2015-05-22 00:00:00eissn
0015-5683issn
1803-6465journal_volume
62pub_type
杂志文章abstract::Life cycle of Eimeria coecicola was studied in experimentally infected rabbits by light microscopy and by transmission and scanning electron microscopy. First and second generation meronts developed in the vermiform appendix; third and fourth generation meronts were located in the epithelium of the ileum. Gametogony d...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract::Cercariae and metacercariae of three species of the Microphallidae Travassos, 1920 were found in snails and crustaceans from tributaries of the Brisbane River, Queensland, Australia. Specimens of Maritrema brevisacciferum Shimazu et Pearson, 1991 and Microphallus minutus Johnston, 1948, which have previously been repo...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2015.053
更新日期:2015-09-16 00:00:00
abstract::Arostrilepis beringiensis (Kontrimavichus et Smirnova, 1991) is redescribed on the basis of its type specimens from Lemmus trimucronatus (Richardson) and material from the collections of the Institute of Systematics and Ecology of Animals, Novosibirsk from the lemmings Myopus schisticolor (Lilljeborg) and Lemmus sibir...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2011.029
更新日期:2011-11-01 00:00:00
abstract::The adult morphology is described and illustrated of Neoplagioporus kajika sp. n. (Digenea: Opecoelidae) found in the Japanese fluvial sculpin Cottus pollux Günther (Osteichthyes: Scorpaeniformes: Cottidae) collected in the Naka River at Terase Bridge, Narutake, Nakagawa Town, Fukuoka Prefecture, Kyushu, Japan. This n...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2006.026
更新日期:2006-09-01 00:00:00
abstract::Except other functions, surface saccharide residues on trematode larvae are supposed either to be the targets of the intermediate (molluscan) and final host immune systems, or to represent candidates for molecular mimicry. Therefore, changes in surface saccharide patterns during the development of the avian schistosom...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
abstract::A comparison of the behavioural peculiarities of Ixodes persulcatus Schulze, 1930 (north-western population, Russia) and Ixodes ricinus (L., 1758) from western Russia and Denmark was determined by using two methods. Method 1 involved a sojourn of ticks on vertical plastic sticks and showed that the questing behaviour ...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2000.029
更新日期:2000-01-01 00:00:00
abstract::Faecal samples from the rock hyrax (Procavia capensis jayakari Thomas) were collected from the Ibex Reserve in central Saudi Arabia. Eimerian oocysts, which are believed to represent a new species described here as Eimeria tamimi sp. n., were detected in 40 out of 93 samples. Oocysts were fully sporulated in 24-48 hou...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2020.001
更新日期:2020-01-10 00:00:00
abstract::The developmental cycle of the trematode Rubenstrema exasperatum (Rudolphi, 1819), a common parasite of insectivores of the family Soricidae, is described here for the first time. The first intermediate host in nature is the snail Planorbarius corneus. Metacercariae encysted experimentally in larvae of the mosquito Cu...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract::Soricinia tripartita Zarnowski, 1955 is redescribed on the basis of specimens from the type host Sorex araneus Linnaeus from Lithuania, Latvia and Russia (Republic of Karelia and Republic of Komi - a new geographical record) as well as from Sorex satunini Ognev and Sorex volnuchini Ognev from Russia (Nalchik Area in t...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:2014-04-01 00:00:00
abstract::Four out of twenty (20%) specimens of the lizard Scincus hemprichii Wiegmann, collected in Saudi Arabia were infected with a previously undescribed species of Choleoeimeria. Oocysts of Choleoeimeria jazanensis sp. n. are cylindroidal, 26 x 15 microm, with a smooth bilayered wall and a shape index of 1.7. Oocyst residu...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2013.026
更新日期:2013-07-01 00:00:00
abstract::Morphology of the nematode Spinitectus minor harboured by Mastacembelus armatus from Burdwan, West Bengal, India was studied by light and scanning electron microscopes. The worms were described, illustrated and discussed taking into consideration of the information available relative to this species. Alate spicules, p...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract::Microsporidia constitute a large group of obligate intracellular protozoan parasites that inject themselves into host cells via the extrusion apparatus of the infective spore stage. Although the injection process is poorly understood, its energy source is thought to reside in the posterior vacuole that swells signific...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2005.014
更新日期:2005-05-01 00:00:00
abstract::Malate dehydrogenase (EC 1.1.1.37.) (MDH) was purified to apparent homogeneity from the cytosolic fraction of the protozoan Trichomonas vaginalis Donné. The four step purification included ion-exchange chromatography (DEAE-Sephacel and Q-Sepharose, elution with NaCl) and affinity chromatography (Reactive Red Agarose, ...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract::A total of 26,478 ixodid ticks (935 pools) were examined by intracerebral inoculation of suckling mice. Six species of ticks were tested: Ixodes ricinus (23,470 individuals), I. trianguliceps (12), Haemaphysalis punctata (831), H. concinna (39), Dermacentor reticulatus (69) and D. marginatus (2,057). The ticks were co...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::Acolpenceron australe sp. n. (Dactylogyridae, Dactylogyrinae) is described from ureters and renal tubules of Percichthys trucha (Cuvier et Valenciennes) (Perciformes, Percichthyidae) from Andean Patagonian lakes. The new species has a haptor with 14 hooks, with shanks comprised of two subunits. It has overlapped inter...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2003.018
更新日期:2003-06-01 00:00:00
abstract::Mastacembelocleidus gen. n. (Monogenoidea: Dactylogyridae) is proposed to include two species collected and redescribed from spiny eels (Mastacembelidae) in India and Iraq: Mastacembelocleidus bam (Tripathi, 1959) comb. n. (syn. Ancyrocephalus bam Tripathi, 1959) from the gills of Macrognathus pancalus (new host recor...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2004.036
更新日期:2004-12-01 00:00:00
abstract::The survival of Encephalitozoon cuniculi Levaditi, Nicolau et Schoen, 1923 spores suspended in distilled water and exposed at defined temperatures was investigated. Infectivity of E. cuniculi spores was tested by inoculation of SCID mice. There was no marked loss of infectivity of spores stored at 4 degrees C for two ...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract::From October 1985 until July 1987, the bionomy of the trematode Allocreadium isoporum (Looss, 1894) was studied in the Rokytná River (the Danube basin), Czechoslovakia. While clams of the genera Sphaerium Scopoli and Pisidium Pfeiffer apparently serve as its first intermediate hosts, mayfly larvae Ephemera danica Müll...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract::While studying the suslik fleas in artificial nests planted in free nature, significant changes in the population dynamics of N. setosa, C. simplex and C. orientalis (from the spring build up to the autumnal peak and the decrease of flea number until the next spring) were noted. The predominance of females in the spri...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1986-01-01 00:00:00
abstract::We studied the specificity of the individual developmental stages of Fasciola hepatica for evoking immune response of the host to reinfection with this parasite, whereby the primary infection was eliminated by a dose of 150 mg/kg diamphenethide administered in various intervals. In rats we observed a state of hypersen...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1975-01-01 00:00:00
abstract::A new nematode species, Paraphilometroides nemipteri sp. n. is described from the female specimens collected from the dorsal fin and operculum of the marine perciforme fish, Nemipterus peronii off Kuala Terengganu coastal waters in Malaysia. It considerably differs from all other species in Philometridae in the struct...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract::The paper deals with the problem of interrelationship between macroclimate of the region, mesoclimate of the biotope studied and microclimate of the tick niches proper, necessary for the research of tick ecology. New methods for the solution of microclimatological studies are proposed and the relationship between macr...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1978-01-01 00:00:00
abstract::The Capsalidae are monogeneans parasitizing 'skin', fins and gills of marine fishes. Some capsalids are pathogenic to cultivated fish and a few have caused epizootic events. It is a cosmopolitan family with broad host associations (elasmobranchs and teleosts, including sturgeons). Approximately 200 capsalid species ar...
journal_title:Folia parasitologica
pub_type: 杂志文章,评审
doi:10.14411/fp.2004.016
更新日期:2004-06-01 00:00:00
abstract::Pathology and pathogenicity of the coccidium Eimeria scabra were studied in pigs experimentally infected at 1-2 months of age. Two phases were evident in the course of pathogenic process. In the first phase, 7-8 days after inoculation (DAI), caudal jejunum and ileum were affected by a severe catarrhal inflammation cha...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00
abstract::It has been verified under laboratory conditions that constant and changing water temperature markedly affects the micropopulation growth in Gyrodactylus gobiensis parasite on the body surface of gudgeons (Gobio gobio L.). At a water temperature of 12 degrees C, the number of gyrodactylids gradually increased up to th...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract::Clearcutting and deforestation lead to increased erosion, increased water temperature, altered water chemistry, and modified watershed hydrology in aquatic systems. Effects on biological organisms have been documented for phytoplankton, zooplankton, benthos, and fish. In this study, parasites of the northern redbelly ...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2001.045
更新日期:2001-01-01 00:00:00
abstract::Toxoplasmosis is a potentially fatal complication after hematopoietic cell transplantation (HCT). Pre-transplant seropositivity of graft recipient to Toxoplasma gondii (Nicolle et Manceaux, 1908) is an important factor for disease reactivation after HCT. As toxoplasmosis epidemiology varies all over the world, we perf...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:10.14411/fp.2019.019
更新日期:2019-11-11 00:00:00
abstract::Suitable procedures for separation of various stages of Toxoplasma gondii by density gradient centrifugation have been delineated using peritoneal exudate of infected mouse as a model. Separation from host cells was effected by gradient centrifugation at 450 g for 30 minutes. Using Ficoll, dextran and sucrose, average...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1979-01-01 00:00:00
abstract::Pseudorhabdosynochus yucatanensis sp. n. (Diplectanidae) is described from the gills of the red grouper, Epinephelus morio (Valenciennes, 1824) (Serranidae), from the coast of the Yucatan Peninsula, Mexico. This new species is characterized by having both the ventral and the dorsal squamodiscs composed of 10-12 rows o...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract::A variety of conditions of cryopreservation were evaluated in order to define a single procedure for freezing the amebae of pathogenic Naegleria and Acanthamoeba. The average best conditions for freezing the three species studied were: 1 x 10(6) exponentially growing amebae/ml of freezing medium consisting of 12% dime...
journal_title:Folia parasitologica
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00