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In the years 1959-1990 429 birds on 30 species of Anseriformes were examined post mortem at ZOO Łódź. The helminths were found in 108 birds (25.17%) of 19 species. In infected birds there were found 4 species of trematodes: one of them, Catatropis verrueosa is in Poland new for Cygnus olor; 9 species of cestodes - 7 of them are in Poland new for examined hosts; namely: Drepanidotaenia lanceolata for Dendrocygna viduata, Cygnus atratus, Branta bernicla, and Anas platyrhynchos; Microsomacanthus paracompressus for Cygnus olor; Dicranotaenia coronula for Chloephaga picta and Cairina moschata; Cloacotaenia megalops for Branta bernicla, Tsehertkovilepis setigera for Cygnus olor, Anser indicus, Branta bernicla and Anas platyrhynchos; Fimbriaria fasciolaris for Cygnus olor and Chloephaga picta; Sobolevieanthus gracilis for Cygnus atratus, Chloephaga picta and Tadorna tadorna; 13 species of nematodes - 7 of them are in Poland new for examined hosts, namely: Cyathostoma variegatum for Cygnus atratus, Anser indicus and Anser caerulescens; Syngamus trachea for Anser indicus; Echinuria uncinata for Anser indicus; Ganguleterakis dispar for Cygnus melanocoryphus, Cygnus olor and Anser caerulescens; Pterothominx caudinflata for Anser indicus; Amidostomum ansersis for Cygnus olor and Branta bernicla; Capillaria anatis for Anas acuta. No acanthocephalans were observed.
Calamicoptes anatidus sp. nov., a new species of rarely found parasitic mites of the family Laminosioptidae (Acari: Astigmata) is described from quill walls of wing covert feathers of Aythya marila Linnaeus (Anseriformes: Anatidae) captured in Poland. This is the first record of the family Laminosioptidae on birds of the order Anseriformes and the first record of this mite family in the fauna of Poland. Females of the new species are most similar to those of C. arenariae Lombert, Gaud et Lukoschus, 1984 and differ from them by the presence of the pygidial shield, which covers dorsal and ventro-lateral parts of the opisthosoma, and by having setae c2 and d2 short and subequal in length, and setae se and cp not reaching the metapodonotal shield.
An examination of specimens of Anas georgica Gmelin (Anatidae) from Región del Bio-Bio and Región del Maule, Chile, revealed the presence of two digenean species reported for the Holartic Region: Australapatemon burti (Miller, 1923) Dubois, 1968 (Strigeidae) and Paramonostomum pseudalveatum Price, 1931 (Notocotylidae). A. burti parasitized ducks from both regions and P. pseudalveatum parasitized only ducks from Región del Bio-Bio. The digeneans were mounted in toto, described and illustrated. The morphology and dimensions of specimens studied correspond with their original descriptions and new morphometrical data and morphological characters are given. The reports of A. burti and P. pseudalveatum in A. georgica represent a new host record and the first record of the genera Australapatemon Sudarikov, 1959 and Paramonostomum Lühe, 1909 from Chile.
New species Drepanidotaenia czaplinskii sp. n. from Netta rufina (Pall.) (Anatidae) is described and figured. The new species differs from the type species of the genus, D. lanceolata, by longer rostellar hooks (0.055-0.060 in D. czaplinskii vs. 0.030-0.037 in D. lanceolata) and a relatively shorter hook blade, in cirrus size and shape, in cirrus sac size and length of vagina. The narrow interpretation of generic diagnosis of Drepanidotaenia (Spassky and Spasskaya 1954) is supported and only two valid species (D. lanceolata, D. czaplinskii) are recognized in this genus.
A new locality of Leucorrhinia caudalis was found on the peat excavation near Czarnków in north part of the Wielkopolska region (Czarnków-Trzcianka district, 52º 55’08” N, 16º 32’26”, UTM: XU06): 2–3 ♂♂ on June 16, 2010. Confirmed breeding (ducklings) of Bucephala clangula on the same day in this place was also interesting.
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