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Illustrated descriptions of Mosesia pavlovskii, M. sittae and M. microsoma have been presented. These species have been described for the first time in Poland, and two of them - M. sittae and M. microsoma - have not been know in Europe until now. Motacilla flava, Turdus philomelos and T. merula are new hosts of these trematodes. M. sittae has been recognized as an autochthonous species - completing its life cycle in the climatic conditions of Lower Silesia. As for the other two species, the author supposes that their invasion has been connected with the birds' migrations or wintering.
During the studies on trematode fauna of birds from Lower Silesia, the rare species - Urotocus rossitensis (MÜHLING, 1898) - was found. It parasitized in the bursa Fabricii of Sylvia borin, Erithacus rubecula and Turdus philomelos, and in the cloaca of Turdus merula. All these birds are new hosts for U. rossitensis which was recorded for the first time in Poland. It is worth mentioning that the localization of this trematode in the cloaca of T. merula is nontypical, since the parasite has underdeveloped suckers. Morphological and biometrical data give us new information about variability of U. rossitensis. They allow the author to support WILLIAMS' (1960) proposition to include U. fusiformis MCINTOSH, 1935 and U. tholonetensis TIMON-DAVID, 1955 among the synonyms of Urotocus rossitensis (MÜHLING, 1898).
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Helmintofauna ryb dorzecza Malej Panwi

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A parasitological investigation was made at 420 fishes from 10 species: Perca fluviatilis L., Gymnocephalus cernuus (L.), Gobio gobio (L.), Tinca tinca (L.), Leuciscus idus (L), Nomacheilus barbatulus (L.), Lota lota (L.), Leucaspisus delineatus (HECKELL 843), Blicca biorkna (L.) and Rhodeus sericeus amarus (BLOCH 1782). The fishes were caught over one year period (1995-1996) in the Mała Panew river drainage basin (South Poland). In examined fishes the following parasite species were found: Diplostomum spathaceum (RUDOLPHI 1819)-metacercaria; Tylodelphys podicipina KOZICKA et NIEWIADOMSKA, 1960 - metacercaria, Asymphyllodora tincae (MODER 1790); Bunodera luciopercae (MÜLLER 1776); Triaenophorus nodulosus (PALLAS 1781) - plerocercoid; Proteocephalus cernue (GMELIN 1790); Camallanus lacustris (ZOEGA 1776); Neoechinorhynchus rutili (MÜLLER 1780); Echinorhynchus borealis (LINSTOW 1901 ); Acanthocephalus lucii (MÜLLER 1776) and Pomphorhynchus laevis (MÜLLER 1776). One species of tapeworm: P. cernue appeared as a new in the parasitefauna of Poland.
This paper contains the second record and locality of S. petruschewskii in Poland. This nematode was found on the catfish (Ictalurus nebulosus L.) from the Odra River in Wrocław (Lower Silesia). S. petruschewskii have been described only in Gymnocephalus cemuus from the Szczecin Firth until now. The authors gave the illustrations (with dimensions) of this species, according to the material from the catfish.
Six dissections of Woodcock were conducted. Three birds were found to be infected by trematodes: Pulvinifer macrostomum and Scolopacitrema cubrensis (Diplostomatidae). Both of them are new species for the Polish parasite fauna. The examination of P. macrostomum has shown a greater variability in size of the body and organs than that described by other authors.
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