Charakterystyka diety oraz wzrostu larw bolenia Aspius aspius (L.) w warunkach stawów karpiowych
Journal Title: Roczniki Naukowe Polskiego Związku Wędkarskiego - Year 2009, Vol 22, Issue
Abstract
The paper presents results of 44 day asp larva rearing from the beginning of endo-exogenous feeding (weight from 2.85 mg (± 0.16) to 3.05 mg (± 0.51)), total length from 8.66 mm (± 0.56) to 9.12 mm (± 0.40) in a carp pond stocked at three densities: 200000, 156000, 50000 ind. per hectare. First feeding was observed when larvae achieved 2.9–3.4 mg body weight. Initially, asp larvae preferred young Copepoda, while Rotatoria were the most dominant food type in the pond. In later stages, to the end of the rearing period, young and adult forms of Copepoda and Cladocera dominated in the larva diet. Insecta were also very important.
Authors and Affiliations
Jerzy Śliwiński
Keywords
Related Articles
- EP ID EP73941
- DOI -
- Views 112
- Downloads 0
Ichtiofauna systemu Widawki. Część II. Dopływy
Nine streams in the Widawka (Warta) River system, including the Krasówka, Rakówka, Pilsia, Chrząstawka and Grabia Rivers, were electrofished at 36 sites in summer 2003. Altogether 5003 individuals representing 26 fish an...
Biomonitoring a prawdziwa różnorodność rzędu pierwszego
Diversity measures are important nonparametric tools of community study in biomonitoring research, which is gaining importance in freshwater fish assessment for angling purposes. Yet the full potential of the measures ha...
Przegęszczona płoć i jej baza pokarmowa zasobna w zooplankton poniżej tamy Zbiornika Jeziorsko
The role of zooplankton in the diet of roach was assessed in the Warta River at the Jeziorsko Reservoir, where roach is considered an eurytopic, dominant species. Fish and zooplankton samples were collected upstream (nat...
Ichtiofauna dorzecza Baudy oraz mniejszych cieków uchodzących do Zalewu Wiślanego
To evaluate fish composition and abundance in several streams flowing into the Vistula Lagoon, the electrofishing method was applied in 37 sampling sites. A total of 23 species have been identified and the most numerous...
Uwarunkowania i prowadzenie gospodarki rybacko-wędkarskiej w zbiornikach zaporowych
Specific conditions in dam reservoirs and the basis of their classification have been discussed. Regularities in the forming of ichthyofauna of the Włocławski, Zegrzyński and Siemianówka reservoirs were shown as an examp...