Helminths of waterfowls from the reservoir of Lake Sevan, Armenia

Movsessian, S. O. and Nikogossian, M. A. (1997) Helminths of waterfowls from the reservoir of Lake Sevan, Armenia. MAGYAR VÍZIVAD KÖZLEMÉNYEK, 3. pp. 307-308. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

Lake Sevan is the unique largest Alpine water reservoir of Armenia (1916 m above sea level witn 1416 km2 surface). The ornithofauna of tne reservoir numbers 210 bird species comprising 9! waterbirds that belong to the following 7 orders: Charadriiformes - 41 species, Anseriformes - 20 species, Cicomiformes - i 1 species, Grviformes - 10 species, Podicipitiformes - 4 species, Pelecaniformes - 3 species, Gaviiformes - 2 species Here, 16 species are settling birds, 28 - nesting transmigrated, and 47 - transmigrated ones. From the mentioned orders of birds 500 specimens referred to 47 species are subjected to helminthological investigation (by dissection). As a result, 313 specimens or 62 6 % are found infected with helminths comprising 23.3 % of trematodes, 81 % of cestodes, 7 9 % of nematodes, and 17 % of acanthocephala. Seventy-two helminth species referred to 50 genera and 22 families are revealed in birds, of which 33 species are trematodes, 22 species - cestodes, 10 species - nematodes, and 7 species - acanthocephala.

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