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The effects of copper and cadmium in single or co-exposure (each at the concentration of 0.2 mg×dm⁻³, and in mixture - 0.1 mg×dm⁻³) on growth of common carp larvae (in terms of body length and perimeter area) during the first 30 days post hatching were evaluated. Body length increased in a similar rate during the entire experimental period, while the increase of body perimeter area became faster after...
The study was done on common carp larvae, the embryonic development of which took place in clean tap water (control K group) or at 0.2 mgˇdm3 of copper (Cu group). The experiments were carried out until the 20 day from hatching. Among newly hatched larvae four types of body malformations were distinguished: A curvature of the spine, B C-shaped larva, E deformed yolk sac, G shortened body...
The sperm collected from common and grass carp males was stored at 5oC, and activated with water of various temperatures (20, 26, and 30oC). Time of spermatozoa motility was measured. Motility decreased with time after milt collection. Common carp spermatozoa were active longer, up to 7080 s. In most series their activity was reduced after 24 hours. Spermatozoa of grass carp were active up to 3055...
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