Author/Editor		Iskender-Kaschl, Ulf
Title		Auswirkungen von Schwermetallbelastung auf terrestrische Isopoden
Translated title		(Food choice of cadmium nitrate dosed in the terrestrial ispodo Oniscus asellus (Crustacea))
Type		monografija
Place		Heidelberg
Publisher		University of Heildelberg, Institute of zoology
Publication year		2003
Volume		str. 64
Language		ger
Abstract		The influence of different concentrations of cadmium nitrate on food choice behaviour was studied in terrestrial isopod Oniscus asellus. In paired food choice tests, consumption rates were compared in relation to cadmium nitrate concentrations and duration of feeding. The consumption of contaminated food was reduced at even lowest cadmium concentration already in the first week of feeding. In the third week the consumption rates for uncontaminated and contaminated food reached a ratio of 6:4 in all animal groups. Consumption of contaminated food during the experiment resulted in increased cadmium content in animals. It is presumed that O. asellus cannot distinguish food according to cadmium concentration. The difference of consumption rates between uncontaminated and cadmium-contaminated food is based on integration of feeding behaviour and adverse metabolic effects of cadmium.
Descriptors		CRUSTACEA FOOD CONTAMINATION CADMIUM COMPOUNDS FEEDING BEHAVIOR CADMIUM