Autumn feeding and lead poisoning of game ducks in Dnieper reservoirs, Ukraine

Golovatch, Oleg F. (1997) Autumn feeding and lead poisoning of game ducks in Dnieper reservoirs, Ukraine. MAGYAR VÍZIVAD KÖZLEMÉNYEK, 3. p. 301. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

There are six reservoirs in the Dnieper region 16 species of game ducks use the areas of wetlands in the basins during autumn migration In autumn the vegetable food prevail in nutrition of dabbling and diving ducks. Such food as duckweeds (Leírnia minor, L. Trisulca, Sridodela polyrrhysa), winter buds of frogtnt (Hydrocharts morsus-ranae), axilliary shoots of soldier (Straliotes abides) and vegetative parts of other higher aquatic plants are the most energy rich value for game waterfowl birds in this season. Mollusks, insects and small crustaceans, which are the inhabitants of these plants, are also consumed. There are species differences in using food resources by ducks For instance. Mallards (Anas platyrhynchos) prefer to ingest the soft parts of aquatic plants. 92 % of food samples studied contained the water plants seeds with hard cover, namely the following: Potamogeton sp ... Sparganium erectum, Schoenoplectus lacusths. in ducks’ gizzards these seeds are grinded up slowly and help to break down the food.

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