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    Wyświetlanie 1-15 z 15
    Tytuł:
    Alterations in selected haemolymph components in the pulmonate snail Planorbarius corneus [L.] naturally infected with developmental stages of digenetic trematodes
    Autorzy:
    Pokora, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/837071.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    parasite
    Polska
    Planorbarius corneus
    snail
    Upper Silesian Industrial Area
    population
    Pulmonata
    aquatic environment
    hemolymph
    Źródło:
    Annals of Parasitology; 1998, 44, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunobiologia slimakow zarazonych przez stadia rozwojowe przywr digenetycznych
    Autorzy:
    Pokora, Z
    Powiązania:
    https://bibliotekanauki.pl/articles/841485.pdf
    Data publikacji:
    1994
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    pasozyty zwierzat
    slimaki
    parazytologia
    odpornosc zwierzat
    stadia rozwojowe
    przywry digenetyczne
    immunobiologia
    zywiciele
    Opis:
    Susceptibility of snails to infection with larvae of digenetic trematodes is determined by: degree of infectivity of a parasite race, causal ecological factors, and efficiency of defence reactions. In the article indications of resistance and immunity of these animals to such infections are presented, with regard to mechanisms of cellular and humoral forms of the immunological response. Some aspects of altered by a parasite dynamics of defence reactions of a host, like: occurrence of opportunistic infections (development of the immunological tolerance state for homo- and heterologous reinfections), adaptive immunity, and cases of survival of parasitic larvae in naturally resistant snails are discussed.
    Źródło:
    Annals of Parasitology; 1994, 40, 1; 15-33
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological basis for somatic gigantism of snails infected with developmental stages of digenean trematodes
    Autorzy:
    Pokora, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/841530.pdf
    Data publikacji:
    1994
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    pathogenesis
    infection
    Opisthioglyphe ranae
    somatic gigantism
    Lymnaea stagnalis
    growth hormone
    host
    parasite
    host-parasite system
    gigantism
    reproductive system
    snail
    Trematoda
    Źródło:
    Annals of Parasitology; 1994, 40, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania nad dynamika somatycznego wzrostu mlodocianych slimakow Lymnaea stagnalis [Pulmonata: Basommatophora] w warunkach doswiadczalnego zarazenia partenitami przywry Opisthioglyphe ranae [Digenea: Plagiorchiida]
    Autorzy:
    Pokora, Z
    Powiązania:
    https://bibliotekanauki.pl/articles/836169.pdf
    Data publikacji:
    1994
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    gigantyzm somatyczny
    pasozyty zwierzat
    Pulmonata
    dynamika wzrostu
    przywry digenetyczne
    zywiciele
    cechy zoometryczne
    Opisthioglyphe ranae
    Basommatophora
    blotniarka stawowa
    Lymnaeidae
    plucodyszne
    parazytologia
    slimaki
    nasadooczne
    Lymnaea stagnalis
    inwazja pasozytnicza
    Digenea
    blotniarkowate
    Opis:
    The effect of exposure of juvenile individuals of Lymnaea stagnalis to infectious eggs of Opisthioglyphe ranae on dynamics of their growth was investigated under controlled conditions in laboratory. In infected snails enlargement of body weight and linear parameters of shell were observed. Any differences in shell shape, analysed on the base of regression of shell width towards to its height, were not ascertained in uninfected snails and those infected with parthenites of the trematode. The findings with this host-parasite system are discussed in relation to possible mechanisms of pathogenesis of somatic gigantism in other trematode-snail interactions.
    Źródło:
    Annals of Parasitology; 1994, 40, 3; 253-263
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problem patogenezy gigantyzmu somatycznego slimakow zarazonych przez stadia rozwojowe przywr digenetycznych
    Autorzy:
    Pokora, Z
    Powiązania:
    https://bibliotekanauki.pl/articles/841583.pdf
    Data publikacji:
    1994
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    gigantyzm somatyczny
    pasozyty zwierzat
    patogeneza
    slimaki
    parazytologia
    stadia rozwojowe
    przywry digenetyczne
    zywiciele
    Opis:
    Mechanism of pathogenesis of somatic gigantism of water snails infected with development stages of digenetic trematodes is a complex phenomenon. The manner of origination of these abnormalities is often dependent on accepted host-parasite relationship. In the article there are discussed essential foundations of hypotheses explaining snails' parasitological gigantism as a consequence of alterations in gonadal activity (e.g. the hypothesis of disturbances in energetic budget of a host) or of different aspects of the parasite effect on activity of the neurosecretory centres, involved in the control of somatic growth, as well as a possibility of production by parthenites some compounds, acting synergically with host's growth neurohormone.
    Źródło:
    Annals of Parasitology; 1994, 40, 2; 159-166
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Barriers of numerocal growth of a parasite's subpopulation in a host's organism on the example of dfensive reactions on snails infected with developmental stages of Digenetic Trematodes
    Autorzy:
    Pokora, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/836535.pdf
    Data publikacji:
    1993
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Źródło:
    Annals of Parasitology; 1993, 39, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Udzial slimakow w epidemiologii schorzen pasozytniczych czlowieka
    Autorzy:
    Pokora, Z
    Powiązania:
    https://bibliotekanauki.pl/articles/840533.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    choroby pasozytnicze
    choroby czlowieka
    slimaki
    parazytologia
    pasozyty
    epidemiologia
    przenoszenie pasozytow
    zywiciele
    Opis:
    Pulmonate and prosobranch snails, being necessary hosts for parthenogenetic generations of digenetic trematodes, participate in transmission of all trematodoses important from medical point of view. Role of particular gastropods in epidemiology of these diseases is discussed in details. Invasion of land snails and slugs is mainly passive by eggs containing developed miracidia, white enter ofthese larvae into snails inhabiting fresh-water environments is usually active. Generations in the snail host between miracidia and cercariae vary considerable, depending upon the fluke species. Generally, the cercaria is produced by the sporocyst or the redia. Cercariae usually actively penetrate out of the infected snail and enter water. Leaving out of account cases of encystation of cercariae in external environment (liver flukes of the family Fasciolidae) and active penetration into the final host (blood flukes of the family Schistosomatidae), encystation of these larvae takes place in the second intermediate host. Cercariae of medically important flukes may develop into metacercariae in tissues of fish (liver flukes - Opisthorchis felineus, Clonorchis sinensis, intestinal flukes - Heterophyes heterophyes, Metagonimus yokogawai, Troglotrema salmincola), as well as in crustaceans (pulmonary flukes of the genus Paragonimus), insects (the bipathogenic liver fluke Dicrocoelium dendriticum and other species of the family Plagiorchiidae incidentally found in man), and gastropods (flukes of the family Echinostomatidae, among them perhaps the best known is the Oriental species - Echinostoma ilocanum). In prevention and control of human trematodoses, especially in endemic foci, elimination of snail hosts is a great importance. Using molluscides may be objectionable from the stadpoint of environmental modification through their toxicity to other organisms. Biological control of snail hosts is more attractive. It includes introduction and management of predators, parasites, or pathogens, and intramolluscan competition. Moreover, certain slugs and terrestrial snails participate in transmission of nematode larval stages, including species known as pathogenic for man - the strongylid nematodes of the genus Angiostrongylus). Such infections may be prevented by abstanding from eating raw or inadequately cooked molluscs in endemic areas.
    Źródło:
    Annals of Parasitology; 2001, 47, 1; 3-24
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania nad behawiorem slimakow w antropogenicznie zmienionym srodowisku wodnym. 1. Aktywnosc lokomotoryczna Lymnaea stagnalis [L.] ze szczegolnym uwzglednieniem subpopulacji zarazonych przez stadia rozwojowe przywr digenetycznych
    Autorzy:
    Pokora, Z
    Powiązania:
    https://bibliotekanauki.pl/articles/840911.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    zmiany srodowiska
    populacje zwierzat
    srodowisko wodne
    zmiany antropogeniczne
    przywry digenetyczne
    blotniarka stawowa
    zbiorniki wodne
    behawior
    aktywnosc lokomotoryczna
    slimaki
    Gornoslaski Okreg Przemyslowy
    Lymnaea stagnalis
    stadia rozwojowe
    infekcja pasozytnicza
    Opis:
    Studies upon behariour of snails in anthropogenically changed water environment. 1. Locomotor activity of lymnaea stagnalis (L), with regard to subpopulations infected with developmental stages of digeneans. The aim of the paper was to analyse the locomotor activity of snails, Lymnaea stagnalis, with regard to physico-chemical properties of water in an inhabited reservoir and parasitic infection. The material was collected in selected anthropogenic water environments situated in the Upper Silesian Industrial Region (sinkhole ponds, sand-and clay-excavations). The locomotor activity of each snail was analysed in laboratory conditions by designation of number of penetrated segments, marked in tanks filled with water originating from a given reservoir, during 15', with intervals of l'. It was observed the significant relationship between locomotor activity of examined snails and the water carbonaceous hardness (r = -0,812, at range of the independent variable 173.0-863.5 mg CaCO₃/dm³). Correlation coefficients with other physico-chemical parameters of water were close to zero. Locomotion of snails infected with developmental stages of digenetic trematodes was significantly lower comparing to non-infected individuals. Locomotor activity of these former ones was dependend more on degree of the digestive gland damage by the parasite than on the infection agent.
    Źródło:
    Annals of Parasitology; 2002, 48, 1; 39-54
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie karminów octowych do barwienia larw przywr digenetycznych in situ
    Application of acetocarmines for staining of digenean larvae in situ
    Autorzy:
    Pokora, Z.
    Szilman, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/838672.pdf
    Data publikacji:
    1991
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    przywry digenetyczne
    Digenea
    larwy
    barwienie
    barwniki koszenilowe
    karmin koszenili
    zastosowanie
    badania in situ
    Opis:
    Qualities of microscopical pictures of digenean larvae total slides stained with different acetocarmines were compared. Semichon's acidifying carmine for topographical staining. Schneider's and Belling's carmines for chromosomes as well as iron acetocarmine (modification of the last two) were used. The last stain permits to obtain the slides, that in respect of their colour and quality of microscopical picture may be compared with slides stained with Semichon's carmine. Contrast, colour and reaction of staining depend on concentration of iron acetate in the staining solution. Total slides of investigated larvae stained respectively with Schneider's and Belling's carmines are not enough readable.
    Źródło:
    Annals of Parasitology; 1991, 37, 2
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kariometryczna analiza wybranych komorek ukladu neurohormonalnego slimaka Lymnaea stagnalis [L.] w warunkach naturalnego zarazenia partenitami przywr digenetycznych
    Autorzy:
    Pokora, Z
    Szilman, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/837830.pdf
    Data publikacji:
    1995
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    blotniarka stawowa
    uklad neuroendokrynny
    analiza kariometryczna
    Lymnaeidae
    slimaki
    parazytologia
    komorki zwierzece
    przywry digenetyczne
    inwazja pasozytnicza
    Lymnaea stagnalis
    blotniarkowate
    Opis:
    To supply more documentary evidence for the effect of parasitic infection on activity of neurosecretory centres in the cerebral ganglia of the snail host, caudo-dorsal and light green cells of adult individuals of Lymnaea stagnalis naturally infected with digenean parthenites were subjected to karyometric analysis. In infected animals significant enlargement of nuclear volumes of both examined types of neurosecretory cells was ascertained. Mean nuclear volume of the light green cells in snails infected with Furcocercariae was significantly lower in comparison with the individuals infected with parthenites from groups Echinostomata and Xiphidiocercariae. In remaining cases differences in nuclear volumes among subpopulations distinguished on the ground of an infection factor were not statistically significant.
    Źródło:
    Annals of Parasitology; 1995, 41, 1; 53-62
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Histochemiczna ocena ilosci lipidow w komorkach gruczolu watrobotrzustkowego Lymnaea stagnalis [L.] [Gastropoda, Pulmonata] naturalnie zakazonych przez larwy przywr digenetycznych
    Autorzy:
    Pokora, Z
    Szilman, P.
    Pokora, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/836939.pdf
    Data publikacji:
    1993
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    pasozyty zwierzat
    Pulmonata
    przywry digenetyczne
    Gastropoda
    larwy
    narzady wewnetrzne
    blotniarka stawowa
    gruczol watrobowotrzustkowy
    plucodyszne
    Lymnaeidae
    parazytologia
    slimaki
    komorki zwierzece
    histochemia
    inwazja pasozytnicza
    Lymnaea stagnalis
    lipidy
    Digenea
    blotniarkowate
    Opis:
    Acid and neutral lipids in epithelial cells building tubules of the digestive gland of snails naturally infected with digenean larvae were stained with nil blue sulphate. Strong decrease in number of phospholipids granules in secretory cells, as well as in calcium cells in the infected glands was observed. The larvae caused also decrease of number of neutral lipids in both types of cells, but these changes were much smaller and did not refer to small granules laying in top parts of the epithelial cells. Changes in number of lipids granules were limited only to the cells of tubules damaged by parasites.
    Źródło:
    Annals of Parasitology; 1993, 39, 1; 29-38
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Histochemiczna ocena kumulacji cynku w komorkach gruczolu watrobowotrzustkowego slimaka Lymnaea stagnalis [L.] w podostrym zatruciu octanem cynku, z uwzglednieniem zarazenia przez larwy przywr digenetycznych
    Autorzy:
    Pokora, Z
    Szilman, P.
    Pokora, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/840378.pdf
    Data publikacji:
    1993
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    pasozyty zwierzat
    blotniarka stawowa
    gruczol watrobowotrzustkowy
    parazytologia
    slimaki
    kumulacja
    cynk
    przywry digenetyczne
    Lymnaea stagnalis
    larwy
    badania histochemiczne
    Opis:
    Accumulation of zinc in epithelial cells of the digestive gland tubules of the freshwater snail Lymnaea stagnalis after subacute intoxication with zinc acetate (strong increasing doses of the metal in short period of time) was histochemically examined using dithizone. Large zinc granules observed in medial and basal parts of calcium cells permitted to conclude that this metal is binded in cytoplasm mainly on granules built of calcium and magnesium phosphate. There were no smaller concentrations of zinc, that would be indicative for metal binding with cytoplasmatic metallothionein-like proteins. In calcium cells of the digestive gland tubules of snails infected with digenean larvae accumulation of zinc was stronger, that would be an aspect of compensatory reaction.
    Źródło:
    Annals of Parasitology; 1993, 39, 3; 225-232
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wybrane parametry biochemii hemolimfy w dwoch klasach wielkosci slimaka Planorbarius corneus [L.] z uwzglednieniem zarazenia jamy plucnej przez Chaetogaster limnaei limnaei Baer [Oligochaeta: Naididae]
    Autorzy:
    Pokora, Z
    Szilman, P.
    Szilman, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/838753.pdf
    Data publikacji:
    1993
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Planorbidae
    jama plucna
    pasozyty zwierzat
    hemolimfa
    Chaetogaster limnaei
    zatoczkowate
    zatoczek rogowy
    wlasciwosci biochemiczne
    szczeciak
    Planorbarius corneus
    skaposzczety
    parazytologia
    slimaki
    inwazja pasozytnicza
    Naididae
    Oligochaeta
    Opis:
    We have proved highly significant differences in glucose concentration and activity of alpha-amylase in haemolymph of two growth classes of Planorbarius corneus with width of shell smaller and equal or greater than 20 mm, respectively. Both these parameters were higher and were characterized by greater range of individual variability in snails with smaller width of shell. Any differences in levels of total protein and haemoglobin in haemolymph of these animals, in comparison with adult individuals, were not observed. Effect of infection of the pulmonary cavity of investigated snails with Chaetogaster limnaei limnaei on the examined parameters was not ascertained.
    Źródło:
    Annals of Parasitology; 1993, 39, 4; 399-404
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Poziom bialka calkowitego oraz aktywnosci wybranych enzymow w hemolimfie Lymnaea stagnalis [L.] [Gastropoda: Pulmonata] naturalnie zagrozonych przez larwy przywr digenetycznych
    Autorzy:
    Pokora, Z
    Szilman, P.
    Szilman, E.
    Pokora, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/840014.pdf
    Data publikacji:
    1993
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    bialko
    aktywnosc enzymatyczna
    hemolimfa
    enzymy
    Pulmonata
    przywry digenetyczne
    Gastropoda
    larwy
    plucodyszne
    slimaki
    Lymnaea stagnalis
    zawartosc bialka
    Digenea
    Opis:
    Total protein and activities of: alpha-amylase, alkaline phosphatase, alanine aminotransferase and aspartate aminotransferase in haemolymph of the freshwater snail Lymnaea stagnalis, naturally infected with digenean larvae were investigated. There were no any changes in these parameters in the snails infected with Cercaria tenuispina that occupies mainly haemocoel sinuses. Significant increase of activities of all examined enzymes in haemolymph of the snails infected with larvae belonging to the Furcocercariae group was ascertained. These changes were proportional to the degree of injury of the digestive gland, examined with the use of the thymol turbidity test. Total protein level was significantly higher only in haemolymph of snails with higher values of this test.
    Źródło:
    Annals of Parasitology; 1993, 39, 2; 179-188
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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