Description:
<jats:title>Abstract</jats:title><jats:p>The accumulation of crimidin in total samples and in some organs of five fish species was studied under experimental conditions. The species were <jats:italic>Cyprinus carpio, Carassius carassius, Tinca tinca, Scardinus erythrophthalmus</jats:italic> and <jats:italic>Leucaspius delineatus</jats:italic>. Fish were exposed to concentrations of 10 mg · l<jats:sup>−l</jats:sup> and 50 mg · l<jats:sup>−1</jats:sup>. During short‐term experiments water and fish samples were taken at intervals of t = 0, 6, 12, 24, 48 and 72 hours, during the long‐term experiment sampling was performed weekly for six weeks. Total samples were analysed for <jats:italic>C. carassius, T. tinca, S. erythrophthalmus</jats:italic> and <jats:italic>L. delineatus</jats:italic>.</jats:p><jats:p>Samples of individual organs and tissues were taken as follows: <jats:italic>C. carpio</jats:italic> – gills, digestive tract, muscular tissue, kidneys, gonads; <jats:italic>C. carassius</jats:italic> – gills, digestive tract, muscular tissue, ovaries, testes. Crimidin was determined by gas chromatography. In samples from the short‐term experiments at a concentration of 10 mg · l<jats:sup>−1</jats:sup> in the water the amount was roughly 10<jats:sup>1</jats:sup>–10 mg · kg<jats:sup>−1</jats:sup>, at a concentration of 50 mg · l<jats:sup>−1</jats:sup> in the water roughly 10<jats:sup>1</jats:sup> mg · kg<jats:sup>−1</jats:sup>. In most cases the accumulation coefficient was lower than 1.0. The accumulation capacity of individual fish species did not differ greatly. Of the internal organs only the kidneys had a high accumulation capacity, otherwise the highest values were found in muscular tissue and the gills. After one – three weeks the amount of crimidin in most organs falls, and after transfer to clean water there is a general sharp decline. Thus crimidin is not firmly bound in the body.</jats:p>