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Summary In the first half of the paper a review is given of the occurrence and migratory habits of Baltic cod based on experience since the 1950s, results of extensive tagging experiments combined with information on changes in allele frequency for haemoglobin types, in meristic characters, and...
Summary Growth and food intake of juvenile flounders from the Kiel Bight were measured experimentally at different salinities (0, 5, 15 and 35 %). The growth at the middle levels (5 and 15 %) was faster then at 0 and 35 %. The reason for lower rates of increase in the freshwater group is the...
Summary The influence of temperature on growth, feed conversion, and protein and gross energy utilization was assessed in two experiments using the European catfish, Silurus glanis L. Animals of 55 g and 24 g were used in trials lasting 6 and 7 weeks, respectively. The optimum temperature for...
Summary Novel gene which was microinjected into fertilized eggs of the goldfish replicated during the embryogenesis. A proportion of the novel gene has been integrated into the host DNS of the 50‐day‐old transgenic goldfish.
Summary Histopathological study of infections with Cryptobia iubilans Nohýnková 1984 in two species of freshwater aquarium cichlids (Herichthys cyanoguttatum and Cichlasoma meeki) revealed severe tissue changes which were not limited to the digestive tract but also affected other principal body...
Summary The influence of water‐borne iron (500 μg × 1‐1 and 2 mg × 1‐1) on the liver of Poecilia reticulata is studied by means of electron microscopy. The uptake and effect of iron is affected by a. the chemical speciation of the metal: Iron complexed with tri‐polyphosphates is more deleterious...
The Freshwater Fishes of China in Coloured Illustrations. (Vol. 1). Co‐edited by the Research Institute of Hydrobiology, the Chinese Academy of Science and the Shanghai Natural Museum, published by the Shanghai Science Press, 1981.
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