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Simultaneous water and food accumulation of 65Zn by Cyprinus carpio L. (Pisces, Ciprinidae) [radioactive contamination]
1985
Baudin, J.P. (Commissariat a l'Energie Atomique, Saint-Paul-les-Durance (France). Centre d'Etudes Nucleaires de Cadarache, Laboratoire de Radioecologie des Eaux Continentales)
Possibility for Water Quality Biocontrol: Observation of Microcystin Transfer in the “Cyanobacteria–Cladohorn–Fish” Food Chain Full text
2022
Xie, Qin-Ming | Zhang, Yan-Wei | Zhu, Daren
Microcystins appear to be considered one of the most dangerous cyanobacterial toxins in the world. The accumulation and change of microcystins MC-LR and MC-RR in the “cyanobacteria–cladocera–fish” food chain were studied. Microcystis aeruginosa was fed to Moina macrocopa at three densities, 5.0 × 10³, 5.0 × 10⁵, and 5.0 × 10⁶ cells/mL, and then passed to Cyprinus flammans. The total amount of MCs in the cyanobacteria cell extract increased with increasing density. The content of MCs in M. macrocopa increased with the feeding density of M. aeruginosa. In the final stage of experiments, MC-RR was the only MC that could be transmitted by M. macrocopa and persisted in red carp. In this study, changes in the concentrations of MC-LR and MC-RR in the liver of red carp seem to indicate some kind of transformation or degradation mechanism. It shows the possibility of MCs concentration-controlled biodefense in eutrophic waters.
Show more [+] Less [-]Effects of different dietary lipid levels in extruded food on the growth of 1+-old carp (Cyprinus carpio) cultured in cooling water
1998
Filipiak, J. | Przybyl, A. | Sadowski, J. | Plust, M. | Trzebiatowski, R.
Carp of the initial individual weight about 1 kg were fed in cages with four kinds of extruded feeds differing in the lipid content (7.5-19.5 percentage). The main source of lipids was a poultry fat. The most favourable results of rearing were achieved while feed containing 15.3 percentage of lipids was used in carp feeding
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