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This paper presents selected data from the literature on the occurrence, chronology and ways of invasion, and some of the most important aspects of the biology of the Amur sleeper, Perccottus glenii. This Siberian freshwater fish species is a member of the family Odontobutidae, and it is an invasive alien species in Polish waters. The invasion of this fish in Poland was first noted over 16 years ago...
Rudd, Scardinius erythrophthalmus (L.), larvae aged four days post-hatch and at the very beginning of swimbladder inflation were exposed to cadmium (0.0, 0.1, 0.2, and 0.3 mg dm⁻³) at 22.0°C (± 0.5°C) for 24 h. Following exposure, the larvae were reared in pure water in a recirculating system at 25.0°C (± 0.5°C) for the subsequent nine days. Cadmium resulted in reduced larval growth and survival,...
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