Results 131 to 140 of about 301 (165)
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International Journal for Parasitology, 1997
The sporocyst wall of the daughter sporocyst of Diplostomum pseudospathaceum is composed of many elements. It is covered by a syncytial layer of cytoplasm connected to sunken nucleated perikarya (cytons), lying underneath the outer-circular and the inner longitudinal muscle layers.
J, Klag, K, Niewiadomska, A, Czubaj
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The sporocyst wall of the daughter sporocyst of Diplostomum pseudospathaceum is composed of many elements. It is covered by a syncytial layer of cytoplasm connected to sunken nucleated perikarya (cytons), lying underneath the outer-circular and the inner longitudinal muscle layers.
J, Klag, K, Niewiadomska, A, Czubaj
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Passerine Birds as Experimental Hosts for Posthodiplostomum minimum (Trematoda: Diplostomidae)
The Journal of Parasitology, 1961Posthodiplostomum minimum (MacCallum, 1921) Dubois, 1936, is a common strigeoid trematode parasitizing several species of herons. Metacercariae of this species, formerly known as Neascus van cleavei (Agersborg), occur in a wide variety of fresh-water fishes, where they invade the liver, spleen, opisthonephroi, mesenteries, and pericardium.
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Archives of Environmental Contamination and Toxicology, 2002
The toxicity of cadmium and zinc mixtures at concentrations ranging from 0.1 to 10,000 microg/L was investigated against the survival of the free-living cercarial stage of the parasitic fluke Diplostomum spathaceum. Cercariae were exposed to metal mixtures of equal concentration, metal mixtures of unequal concentration, and low-dose pretreatment ...
N J, Morley, M, Crane, J W, Lewis
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The toxicity of cadmium and zinc mixtures at concentrations ranging from 0.1 to 10,000 microg/L was investigated against the survival of the free-living cercarial stage of the parasitic fluke Diplostomum spathaceum. Cercariae were exposed to metal mixtures of equal concentration, metal mixtures of unequal concentration, and low-dose pretreatment ...
N J, Morley, M, Crane, J W, Lewis
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Parasitology Research, 2011
The neuromuscular system (NMS) in cercariae of Diplostomum pseudospathaceum, Cotylurus szidati, Australapatemon burti, Holostephanus volgensis, and Paracoenogonimus ovatus was studied with immunocytochemical methods and confocal scanning laser microscopy.
Oleg O, Tolstenkov +3 more
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The neuromuscular system (NMS) in cercariae of Diplostomum pseudospathaceum, Cotylurus szidati, Australapatemon burti, Holostephanus volgensis, and Paracoenogonimus ovatus was studied with immunocytochemical methods and confocal scanning laser microscopy.
Oleg O, Tolstenkov +3 more
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Parasitology Research, 2002
Laboratory experiments were carried out to examine the impact of mercury and chromium upon survival of Diplostomum sp. cercariae. Freshly emerged cercariae were exposed to solutions of either mercury, at concentrations ranging between 0.1 and 100 microg/l, or chromium at concentrations from 2 microg/l to 2 mg/l. The mortality patterns and mean survival
M, Pietrock +3 more
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Laboratory experiments were carried out to examine the impact of mercury and chromium upon survival of Diplostomum sp. cercariae. Freshly emerged cercariae were exposed to solutions of either mercury, at concentrations ranging between 0.1 and 100 microg/l, or chromium at concentrations from 2 microg/l to 2 mg/l. The mortality patterns and mean survival
M, Pietrock +3 more
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Parasitology Research, 2006
A cysteine proteinase was detected in the penetration glands of the cercariae of Tylodelphys excavata and examined by means of biochemical and histochemical methods. The enzyme hydrolyzed azocoll, azocasein, azoalbumin, and N-benzoyl-l-arginine-4-nitroanilide at optimal pH 6.8, 6.4, 6.8, and 6.4, respectively, but was incapable of degrading elastin ...
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A cysteine proteinase was detected in the penetration glands of the cercariae of Tylodelphys excavata and examined by means of biochemical and histochemical methods. The enzyme hydrolyzed azocoll, azocasein, azoalbumin, and N-benzoyl-l-arginine-4-nitroanilide at optimal pH 6.8, 6.4, 6.8, and 6.4, respectively, but was incapable of degrading elastin ...
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International Journal for Parasitology, 1996
Using TEM techniques, 13 types of sensory endings were revealed on the body and tail of cercariae of D. pseudospathaceum. They differ in the presence or absences of cilia, number of cilia, number of electron-dense rings, basal body type and collar shape.
A, Czubaj, K, Niewiadomska
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Using TEM techniques, 13 types of sensory endings were revealed on the body and tail of cercariae of D. pseudospathaceum. They differ in the presence or absences of cilia, number of cilia, number of electron-dense rings, basal body type and collar shape.
A, Czubaj, K, Niewiadomska
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[Enzyme activity of metacercariae in the genus Diplostomum (Trematoda, Diplostomidae)].
Parazitologiia, 1984Studies were conducted of the content of ferments with which metacercariae of trematodes of the genus Diplostomum affect the tissues of the host's crystalline lens. The following ferments were found in exudates of metacercariae: pepsin, cathepsin, hyaluronidase and lipase. Their activity depends to a great extent on temperature. Considerable changes in
N S, Okopnyĭ, I D, Trombitskiĭ
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Cercarial chaetotaxy of Codonocephalus urniger (Rudolphi, 1819) (Trematoda: Diplostomidae)
Systematic Parasitology, 1993The chaetotaxy of Codonocephalus urniger (Rudolphi, 1819) cercariae recovered from Lymnaea palustris in a brackish water lake in Bulgaria is described and figured. Comparisons with Diplostomum spathaceum (Rudolphi, 1819) and D. pseudospathaceum Niewiadomska, 1984 cercariae indicate a similar general pattern in the distribution of sensilla but with ...
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Parasitology Research, 2006
Morphogenesis of the alimentary canal in developing Diplostomum pseudospathaceum cercariae has been studied using electron microscopy. The foregut primordium appears in early cercariae as a cellular cord. Later, the lumen develops within the foregut primordium, and its cells give rise to the cellular epithelium, limiting this lumen.
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Morphogenesis of the alimentary canal in developing Diplostomum pseudospathaceum cercariae has been studied using electron microscopy. The foregut primordium appears in early cercariae as a cellular cord. Later, the lumen develops within the foregut primordium, and its cells give rise to the cellular epithelium, limiting this lumen.
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