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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

100%

Pokora Z.

Wiadomości Parazytologiczne

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1993

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tom 39

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nr 3

2

Hormonal regulation of cephalopod reproduction in the light of comparative endocrinology of invertebrates

100%

Pokora Z.

Folia Malacologica

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1999

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tom 07

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nr 4

3

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

100%

Pokora Z.

Wiadomości Parazytologiczne

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2002

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tom 48

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nr 1

39-54

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.

4

Udzial slimakow w epidemiologii schorzen pasozytniczych czlowieka

100%

Pokora Z.

Wiadomości Parazytologiczne

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2001

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tom 47

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nr 1

3-24

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.

5

Wybrane aspekty układu posożyt-żywiciel na przykładzie ślimaków płucodysznych zarażonych przez stadia rozwojowe przywr digenetycznych

100%

Pokora Z.

Przegląd Zoologiczny

|

1990

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tom 34

|

nr 4

6

Behaviour in a host-parasite association, based on snails infested with flukes

100%

Pokora Z.

Folia Malacologica

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1998

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tom 06

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nr 1-4

7

Immunobiologia slimakow zarazonych przez stadia rozwojowe przywr digenetycznych

100%

Pokora Z.

Wiadomości Parazytologiczne

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1994

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tom 40

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nr 1

15-33

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.

8

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. III. Onchidiidae

100%

Pokora Z.

Przegląd Zoologiczny

|

1989

|

tom 33

|

nr 4

9

Nerwowe i hormonalne podłoże niektórych form zachowania rozrodczego slimaków płucodysznych

100%

Pokora Z.

Przegląd Zoologiczny

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1990

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tom 34

|

nr 2-3

10

Hormonalna kontrola rozrodu u ślimaków przodoskrzelnych

100%

Pokora Z.

Przegląd Zoologiczny

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1991

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tom 35

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nr 3-4

11

Badania nad patogeneza zmian w zakresie wzrostu somatycznego Lymnaea stagnalis [Gastropoda: Pulmonata] doswiadczalnie zarazonych partenitami Opisthioglyphe ranae [Digenea: Plagiorchiida] Cz.I

100%

Pokora Z.

Wiadomości Parazytologiczne

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1996

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tom 42

|

nr 1

71-80

12

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. II. Stylommatophora

100%

Pokora Z.

Przegląd Zoologiczny

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1989

|

tom 33

|

nr 2

13

Przyczynek do badan nad neurosekrecja slimakow plucodysznych

100%

Pokora Z.

Przegląd Zoologiczny

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1992

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tom 36

|

nr 1-4

265-267

14

Wybrane aspekty czynnosci mechanizmow obronnych slimakow w swietle immunobiologii porownawczej

100%

Pokora Z.

Przegląd Zoologiczny

|

1994

|

tom 38

|

nr 1-2

7-17

15

Problem patogenezy gigantyzmu somatycznego slimakow zarazonych przez stadia rozwojowe przywr digenetycznych

100%

Pokora Z.

Wiadomości Parazytologiczne

|

1994

|

tom 40

|

nr 2

159-166

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.

16

Strobilacja formą rozrodu bezpłciowego niektórych skrzydłonogów (Gastropoda, Opisthobranchia). Funkcjonalne znaczenie tego procesu w aspekcie ich cyklu życiowego

100%

Pokora Z.

Przegląd Zoologiczny

|

1989

|

tom 33

|

nr 3

17

The oligochaete Chaetogaster limnaei in populations of Lymnaea stagnalis (gastropoda: Pulmonata) ihabiting anthropogenic water environments in the Upper-Silesian Industrial Region (Southern Poland)

100%

Pokora Z.

Wiadomości Parazytologiczne. Suplement

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2004

|

tom 50

18

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. I. Basommatophora

100%

Pokora Z.

Przegląd Zoologiczny

|

1988

|

tom 32

|

nr 3

19

Badania nad patogeneza zmian w zakresie wzrostu somatycznego Lymnaea stagnalis [Gastropoda: Pulmonata] doswiadczalnie zarazonych partenitami przywry Opisthioglyphe ranae [Digenea: Plagiorchiida]. II.

100%

Pokora Z.

Wiadomości Parazytologiczne

|

1996

|

tom 42

|

nr 2

171-179

20

Badania nad dynamika somatycznego wzrostu mlodocianych slimakow Lymnaea stagnalis [Pulmonata: Basommatophora] w warunkach doswiadczalnego zarazenia partenitami przywry Opisthioglyphe ranae [Digenea: Plagiorchiida]

100%

Pokora Z.

Wiadomości Parazytologiczne

|

1994

|

tom 40

|

nr 3

253-263

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.

Ograniczanie wyników

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

Hormonal regulation of cephalopod reproduction in the light of comparative endocrinology of invertebrates

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

Udzial slimakow w epidemiologii schorzen pasozytniczych czlowieka

Wybrane aspekty układu posożyt-żywiciel na przykładzie ślimaków płucodysznych zarażonych przez stadia rozwojowe przywr digenetycznych

Behaviour in a host-parasite association, based on snails infested with flukes

Immunobiologia slimakow zarazonych przez stadia rozwojowe przywr digenetycznych

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. III. Onchidiidae

Nerwowe i hormonalne podłoże niektórych form zachowania rozrodczego slimaków płucodysznych

Hormonalna kontrola rozrodu u ślimaków przodoskrzelnych

Badania nad patogeneza zmian w zakresie wzrostu somatycznego Lymnaea stagnalis [Gastropoda: Pulmonata] doswiadczalnie zarazonych partenitami Opisthioglyphe ranae [Digenea: Plagiorchiida] Cz.I

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. II. Stylommatophora

Przyczynek do badan nad neurosekrecja slimakow plucodysznych

Wybrane aspekty czynnosci mechanizmow obronnych slimakow w swietle immunobiologii porownawczej

Problem patogenezy gigantyzmu somatycznego slimakow zarazonych przez stadia rozwojowe przywr digenetycznych

Strobilacja formą rozrodu bezpłciowego niektórych skrzydłonogów (Gastropoda, Opisthobranchia). Funkcjonalne znaczenie tego procesu w aspekcie ich cyklu życiowego

The oligochaete Chaetogaster limnaei in populations of Lymnaea stagnalis (gastropoda: Pulmonata) ihabiting anthropogenic water environments in the Upper-Silesian Industrial Region (Southern Poland)

Hormonalna kontrola procesów rozrodczych u ślimaków płucodysznych. I. Basommatophora

Badania nad patogeneza zmian w zakresie wzrostu somatycznego Lymnaea stagnalis [Gastropoda: Pulmonata] doswiadczalnie zarazonych partenitami przywry Opisthioglyphe ranae [Digenea: Plagiorchiida]. II.

Badania nad dynamika somatycznego wzrostu mlodocianych slimakow Lymnaea stagnalis [Pulmonata: Basommatophora] w warunkach doswiadczalnego zarazenia partenitami przywry Opisthioglyphe ranae [Digenea: Plagiorchiida]