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Parasitic worms in a slowworm (Auguis fragilis L.) population from the Bieszczady Mountains (Poland)

100%

Lewin J.

nr 3

Parasites of the sand lizard [Lacerta agilis L.] in Poland

100%

Lewin J.

nr 1

One hundred-fifty sand lizards from various localities in Poland have been dissected, yielding 17 species of parasites: 6 species of adult trematodes, 3 metacercariae, 1 cestode larva, 3 adult nematodes, 2 nematode larvae and 2 species of acarines. Only 3 species (Plagiorchis mentulatus, Metaplagiorchis molini and Ophionyssus saurarum ) are specific parasites of lizards, one (Rhabdias fuscovenosa) is a specific parasite of other reptiles, the remaining species are common parasites of amphibians or other vertebrates. Adult parasites were found exclusively in the alimentary tract, larvae in the wall of intestine, body cavity and parenchymatous organs, acarina on the body surface. Anatomo-pathological changes due to parasite infection were sporadically noted. Influence of geographical region on infection of lizards was noted as well as the strong bearing of host age and sex on parasites. These phenomena are interpreted on the basis of host behaviour.

Parasites of the water snake, Natrix natrix L., in Poland

100%

Lewin J.

tom 37

nr 4

Sixty two specimens of the water snake, Natrix natrix L., from various regions of Poland, have been examined yielding 21 species of parasites: 6 species of adult trematodes, 5 meso- and metacercariae, 1 cestode larva, 5 adult nematodes, 2 nematode larvae, 1 acanthocephalan and 1 tick. Most of the adult trematodes and one nematode are specific parasites of water snakes, the other species occur more-or-less commonly in the other reptiles; some are typical parasites of amphibians, being only occasional parasites of water snakes. Adult parasites inhabited the alimentary tract and lungs, the larvae were usually encysted in the body cavity. Some differences in the levels of infections of snakes from various regions of the country were noted as well as differences related to the host age and sex. Interpretation of these phenomena is based on the behaviour of the snakes. It is also suggested that the decrease in the number of intestinal parasites, observed in older snakes, is caused by bufotoxin from the skin of toads, occasionally devoured by the snakes.

The helminth fauna of Bombina bombina (L.) and B. Variegata (L.) in Poland

63%

Grabda-Kazubska B. , Lewin J.

nr 3

Chaetotaxy of the cercaria of Azygia lucii [O.F.Muller, 1776] [Trematoda, Azygiidae]

63%

Grabda-Kazubska B. , Lewin J.

nr 3