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Salmonids in the water source reservoirs [in Czechoslovakia] - their importance and food
1987
Hochman, I. (Ustav Rybarstva a Hydrobiologie, Bratislava (Czechoslovakia)) | Sukop, I.
The food of common bream (Abramis brama L.) in a biomanipulated water supply reservoir Texto completo
2012
Zapletal, T., Mendelova Univ., Brno (Czech Republic). Ustav Zoologie, Rybarstvi, Hydrobiologie a Vcelarstvi | Mares, J., Mendelova Univ., Brno (Czech Republic). Ustav Zoologie, Rybarstvi, Hydrobiologie a Vcelarstvi | Jurajda, P., Akademie Ved, Brno (Czech Republic). Ustav Biologie Obratlovcu | Vsetickova, L., Akademie Ved, Brno (Czech Republic). Ustav Biologie Obratlovcu
Food composition of Abramis brama was studied in the shallow, meso-eutrophic Hamry reservoir (Czech Republic). Fish were sampled during the daytime in the pre-spawning period (April), the post-spawning (June), summer (July) and autumn (October) in 2011. The bream sampled comprised two main size groups: small (124-186 mm) and large (210-315 mm) standard length. Twenty specimens of each size group (except April - 40 large fish) were taken for analysis on each sampling occasion. Food composition was evaluated using gravimetric methods. Over the whole season, detritus and aquatic vegetation were the dominant dietary items taken. During summer, the diet of large bream comprised mainly aquatic vegetation. Benthic macroinvertebrates and zooplankton formed a minor part of bream diet over the whole season. Specific food habits of bream could be explained by specific conditions within the reservoir and available food resources.
Mostrar más [+] Menos [-]Macrozoobenthos as a fish food source on the open water area of the Lake Balaton
1998
Szito, A.
The aims of the investigations were to estimate the biomass and the production of the macrozoobenthos and to know their season dynamics. Investigations were supported by Fishery's Foundation. Sediment chemical analysis showed that the macrozoobenthos biomass was determined by the quantity of the phosporus. Chironomid larvae formed the 70-90 per cent of benthos biomass in Keszthely basin.
Mostrar más [+] Menos [-]A trial of the seaweed food consumption of five kinds of phytophagy benthoses by the water tank examination and a food consumption estimate in a natural sea area by standardization
2007
Kanamaru, H.(Saga-ken. Genkai Fisheries Research and Development Center, Karatsu (Japan)) | Aramaki, H. | Furukawa, Y.
