Folia Parasitologica, vol. 44 (1997), issue 1

Parasites of the recently established round goby (Neogobius melanostomus) and tubenose goby (Proterorhinus marmoratus) (Cottidae) from the St. Clair River and Lake St. Clair, Michigan, USA

Pronin NM, Fleischer GW, Baldanova DR, Pronina SV

Folia Parasitologica 44[1] 1-6 (1997)

Specimens of the recently established European round goby (Neogobius melanostomus Pallas, 1811) and tubenose goby (Proterorhinus marmoratus Pallas, 1811) were collected from different locations in the St. Clair River and Lake St. Clair, USA and were examined for parasites. Parasites were observed in 76% of the round gobies and 35% of the tubenose gobies. Four species of parasites in the gobies occur in the Black Sea watershed. Two of them have been reported in North America for the first time: Sphaeromyxa sevastopoli Naidenova, 1970 and Ichthyocotylurus pileatus (Rudolphi, 1802). Three parasite species found in the gobies are endemic to North America...

Intense infections with a variant of Myxobolus procerus (Myxosporea) in muscle of trout-perch (Percopsis omiscomaycus) in Duluth Harbor, Lake Superior

David Cone, Thomas Eurell, Richard Axler, Dan Rau and Val Beascley

Folia Parasitologica 44[1] 7-11 (1997)

Endoparasitic helminths of the European eel, Anguilla anguilla, from four disconnected meanders from the rivers Leie and Scheldt in western Flanders, Belgium

Schabuss M, Konecny R, Belpaire C, Schiemer F

Folia Parasitologica 44[1] 12-18 (1997)

The endoparasitic helminth communities of the European eel, Anguilla anguilla (L.), were investigated in four meanders, cut off from the rivers Leie and Scheldt in western Flanders, Belgium. Six species of helminths (2 cestodes, 2 nematodes and 2 acanthocephalans) were found. The dominant parasite species was the nematode Anguillicola crassus (Kuwahara, Niimi et Itagaki, 1974) infecting 79% of the eel population with intensities up to 112 specimens per fish. At two localities no acanthocephalans could be found, whereas these parasites were very common at the other sites. The prevalence, mean intensity, intensity and abundance, their correlation to...

The distribution of the metacercariae of Diplostomum phoxini in the brain of minnows, Phoxinus phoxinus

Iain Barber & D. W. T. Crompton

Folia Parasitologica 44[1] 19-25 (1997)

Spermatozoon and spermiogenesis in Mesocoelium monas (Platyhelminthes: Digenea): Ultrastructure and epifluorescence microscopy of labelling of tubulin and nucleus

Iomini C, Mollaret I, Albaret JL, Justine JL

Folia Parasitologica 44[1] 26-32 (1997)

Spermiogenesis and the spermatozoon were studied in the digenean Mesocoelium monas Rudolphi, 1819 (from the toad Bufo sp. in Gabon). An ultrastructural study revealed that spermiogenesis follows the usual pattern found in digeneans, i.e. proximo-distal fusion of axonemes with a median cytoplasmic process followed by elongation. The spermatozoon has two fully incorporated axonemes with the 9 + ''1'' trepaxonematan pattern. Indirect immunofluorescence localization of tubulin and fluorescent labelling of the nucleus were used to obtain additional information on the structure of the spermatozoon. It was thus shown that one of the axonemes is slightly shorter...

Some nematodes of freshwater fishes in Venezuela

Moravec F, Prouza A, Royero R

Folia Parasitologica 44[1] 33-47 (1997)

The present paper comprises a systematic survey of nematodes found in 88 specimens of 24 species of freshwater fishes in Venezuela in 1992 and 1994. The following 13 species of nematodes were recorded: Adults: Guyanema longispiculum Moravec, Prouza et Royero, 1996, Guyanema sp., Procamallanus (Spirocamallanus) inopinatus Travassos, Artigas et Pereira, 1928, P. (S.) krameri (Petter, 1974) comb. n., P. (S.) pintoi (Kohn et Fernandes, 1988) comb. n., Procamallanus (Spirocamallanus) sp., Raphidascaris (Sprentascaris) mahnerti (Fetter et Cassone, 1984). Larvae: Anisakidae gen. sp., Brevimulticaecum sp., Contracaecum sp. Type 1, Contracaecum sp. Type 2,...

New data on the morphology and systematic status of Klossinemella iheringi (Nematoda: Atractidae) from an Amazonian serrasalmid fish

Moravec F, Thatcher VE

Folia Parasitologica 44[1] 48-54 (1997)

The morphology of the nematode Klossinemella iheringi (Travassos, Artigas et Pereira, 1928), the type species of the genus Klossinemella Costa, 1961, was studied using specimens collected from the serrasalmid fish, Mylesinus paraschomburgkii Jegu, Santos et Ferreira, 1989 (a new host record), from the Trombetas River, Para State, Brazil, by both light and scanning electron microscopy. This species was also recorded from the Jari River (Para State), the Uatuma, Pitinga and Capucapu Rivers (Amazonas State), and the Araguari River (Amapa State). An examination by SEM made it possible, for the first time in this genus, to study in detail the structure...

Toxocara canis (Nematoda: Ascaridae): the fine structure of the oviduct, oviduct-uterine junction and uterus

Magdaléna Bruňanská

Folia Parasitologica 44[1] 55-61 (1997)

Two hemocyte populations in Triatoma infestans: Ultrastructural and lectin-binding characterization

Hypsa V, Grubhoffer L

Folia Parasitologica 44[1] 62-70 (1997)

Two distinct hemocyte populations are determined in the hemolymph of the triatomine bug Triatoma infestans Klug, oenocytoids and plasmatocytes, and their independent origin from separate stem cells is shown. Both hemocyte populations differ considerably in their morphology, ultrastructure and lectin-binding properties. While oenocytoids are quite uniform with easily definable cells which do not to bind any assayed lectin, the plasmatocytes are a very polymorphic population possessing several morphological types and displaying a positive reactivity with lectins.

Carbohydrate-binding specificities and physico-chemical properties of lectins in various tissue of phlebotominae sandflies

Palanova L, Volf P

Folia Parasitologica 44[1] 71-76 (1997)

Physico-chemical properties and carbohydrate-binding specificity of hemagglutination activity (HA) were compared in tissue lysates and haemolymph of unfed and bloodfed females of five sandfly species. Sandfly gut lectins were found to be heat-labile, sensitive to dithiotreitol treatment, freezing/thawing procedures and were affected by divalent cations. The pH optimum of HA ranged between 7.0-7.5. Specificity of gut HA of all species studied was directed towards aminosugars and some glycoconjugates, mainly lipopolysaccharide from Escherichia coli K-235, heparin and fetuin. Gut HA of Phlebotomus papatasi (Scopoli, 1786) was strongly inhibited by lipophosphoglycan...

Attempts to immunize chickens against Cryptosporidium baileyi with C-parvum oocysts and Paracox(TM) vaccine

Sreter T, Hornok S, Varga I, Bekesi L, Szell Z

Folia Parasitologica 44[1] 77-80 (1997)

To study the possibility of immunization against Cryptosporidium baileyi Current, Upton et Haynes, 1986 with the attenuated anticoccidial vaccine, Paracox(TM) and oocysts of C. parvum Tyzzer, 1912, chickens were inoculated orally with either 3 x 10(3) vaccine oocysts or 8 x 10(5) C. baileyi or C. parvum oocysts at 1 week of age. The inoculation with Paracox(TM) vaccine and C. parvum oocysts was repeated at 2 and 3 weeks of age. Uninfected birds served as controls. All animals with the exception of one uninfected group were challenged orally with either 8 x 10(5) C. baileyi or 3 x 10(5) Eimeria tenella Railliet et Lucet, 1891 oocysts at 4 weeks of age....