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Wyświetlanie 1-8 z 8
Tytuł:
The reasons for helminth infections in hosts
Autorzy:
Okulewicz, A.
Bunkowska, K.
Powiązania:
https://bibliotekanauki.pl/articles/5906.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
reason
helminth
parasitic infection
host
intensive infection
parasite
life cycle
host ecology
host-parasite relationship
Źródło:
Annals of Parasitology; 2012, 58, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of distribution parameters of some avian parasites
Autorzy:
Lonc, E
Okulewicz, A.
Kopocinska, I.
Powiązania:
https://bibliotekanauki.pl/articles/840277.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
nematode species
avian parasite
bird
infecting bird
distribution parameter
host-parasite interaction
Opis:
Occurrence of nematodes (mostly dominating and common species of Porrocaecum ensicaudatum and P. semiteres) in host populations of birds (Turdus merula, T. philomelos, Sturnus vulgaris and Scolopax rusticola) was summarized in frequency distributions, and tests of agreement with the Poisson model as well as the modified binomial have been computed. Comparisons of the observed frequencies with the expected ones showed the high values (3 - 257) of the coefficient of dispersion, the so-called „overdispersion", characteristic for the negative binomial which is an extension of the Poisson model. A nearly perfect fitness of the counted (observed) with the expected frequencies was found for S. vulgaris both in the analysis of nematode metapopulation and their common species of P. ensicaudatum. Some deviations from the expectations were found for tracing of all nematode species distributions in T. merula, T. philomelos. On the other hand, the same model (negative binomial distribution according to moment method) has fitted quite well to each for common or dominating, nematode species.
Źródło:
Annals of Parasitology; 1997, 43, 2
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of distribution parameters of some avian parasites
ESTYMACJA PARAMETRÓW ROZKŁADU NIEKTÓRYCH PASOŻYTÓW PTAKÓW
Autorzy:
Lonc, E.
Okulewicz, A.
Kopocińska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2148938.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
nematode species
avian parasite
bird
infecting bird
distribution parameter
host-parasite interaction
Opis:
Occurrence of nematodes (mostly dominating and common species of Porrocaecum ensicaudatum and P. semiteres) in host populations of birds (Turdus merula, T. philomelos, Sturnus vulgaris and Scolopax rusticola) was summarized in frequency distributions, and tests of agreement with the Poisson model as well as the modified binomial have been computed. Comparisons of the observed frequencies with the expected ones showed the high values (3 - 257) of the coefficient of dispersion, the so-called „overdispersion", characteristic for the negative binomial which is an extension of the Poisson model. A nearly perfect fitness of the counted (observed) with the expected frequencies was found for S. vulgaris both in the analysis of nematode metapopulation and their common species of P. ensicaudatum. Some deviations from the expectations were found for tracing of all nematode species distributions in T. merula, T. philomelos. On the other hand, the same model (negative binomial distribution according to moment method) has fitted quite well to each for common or dominating, nematode species.
Źródło:
Wiadomości Parazytologiczne; 1997, 43, 2; 185-193
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Capillaria resecta [Duj., 1845] [Nematoda] - specyfic parasite of Corvus monedula [Corvidae]
Autorzy:
Okulewicz, A.
Fronska, A.
Powiązania:
https://bibliotekanauki.pl/articles/841245.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Corvus monedula
parasite
Corvidae
Nematoda
parasitic life
Capillaria resecta
geohelminth
host
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New records of helminth species and their hosts in Poland
Nowe gatunki helmintów i ich żywiciele w Polsce
Autorzy:
Okulewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/836367.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Acanthocephala
Cestoda
Digenea
Monogenea
Nematoda
Polska
Trematoda
helminth
helminth species
host
new record
new species
parasite
species list
Źródło:
Annals of Parasitology; 2011, 57, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New records of helminth species and their hosts in Poland
Nowe gatunki helmintów i ich żywiciele w Polsce
Autorzy:
Okulewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/2143303.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Acanthocephala
Cestoda
Digenea
Monogenea
Nematoda
Polska
Trematoda
helminth
helminth species
host
new record
new species
parasite
species list
Opis:
Information on species of parasitic helminths native to Poland is provided by the Pasożytnicze helminty Polski. Gatunki. Żywiciele. Białe Plamy [1]. Until the middle of 2007, there were 1205 species of recorded helminths including 126 species of Monogenea, 338 of Trematoda (Digenea), 279 of Cestoda, 427 of Nematoda and 35 of Acanthocephala. They represented 32.9% of the species recorded in Europe (i.e., registered in the Fauna Europaea database). During the following three years up to the middle of 2010, 64 new species of Polish helminths were detected: 7 Monogenea, 15 Trematoda (Digenea), 21 Cestoda, 20 Nematoda and one Acanthocephala. Most hosts of the new helminth species were reported from birds (40 species), but also from fish (13 species) and mammals (10 species). Only one new species of helminth was detected in amphibians.
Źródło:
Wiadomości Parazytologiczne; 2011, 57, 1; 3-9
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Artykuł
Tytuł:
Heavy metal concentration in plerocercoids of Triaenophorus nodulosus [Pallas, 1781] [Cestoda: Triaenophoridae] and in different organs of their host - perch Perca fluviatilis [L.]
Autorzy:
Popiołek, M.
Okulewicz, A.
Dobicki, W.
Nowak, R.
Powiązania:
https://bibliotekanauki.pl/articles/2143843.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Triaenophorus nodulosus
organ
atomic absorption spectroscopy
water pollutant
different organ
host
parasite
Cestoda
determination
perch
plerocercoid
Triaenophoridae
Perca fluviatilis
concentration
water pollution
heavy metal
Opis:
Background. Heavy metals are at present classified among the most important and dangerous water pollutants. Since over 15 years parasites have been used as a bioindicators of water pollution, e.g. using their ability to accumulate heavy metals. Concentration of four elements (Zn, Cd, Ni, Cu) in selected organs of the perch (Perca fluviatilis) and in the tissues of its parasite, plerocercoid of the tapeworm Triaenophorus nodulosus, was analysed. Material and methods. The fish were subject to full helminthological section, resulting in 66 tapeworm larvae isolated from cysts, located in the liver. Plerocecroids, gills, liver and intestine with duodenum were removed and frozen. Content of heavy metals was determined with atomic absorption spectroscopy method. Results. The distribution of the content of Ni, Cd and Zn was similar. In all cases, among all the examined fish organs, the highest mean concentration of the metals was found in the liver, followed by the intestine; it was the lowest in the gills. The mean concentration of the metals in the tapeworm tissues was from 6 to 74 x higher than in the gills, 5−37 x higher than in the intestine and 2.5−28 x higher than in the liver. The concentration of Cu was also the highest in the tapeworm tissues, but its concentration in the fish intestine and liver was nearly the same; it was the lowest in the gills.
Źródło:
Wiadomości Parazytologiczne; 2007, 53, 1; 21-24
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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