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
Monitoring ichtiofauny systemu rzecznego Liswarty: kontynuacja w latach 2012–2013
The structure and abundance of fish fauna of the Liswarta River system, the largest left side tributary of the Warta River, were investigated at 30 sampling sites in 2012 and 2013. A total of 9119 specimens weighing 178...
Ichtiofauna dorzecza Motławy
The fish fauna composition was investigated in the Motława River system by the electrofishing method from August to October 2010. A total of 6196 fish and lampreys individuals representing 31 species were captured in 57...
Ichtiofauna Bugu
The Bug River is the longest tributary (772 km) of the Narew River. The present study describes and analyses the fish fauna of three river sections, whose total length is 587 km. The first section flows along the border...
Ichtiofauna rzeki Elbląg
Fish distribution and abundance were investigated in the Elbląg River system (Vistula Lagoon catchment area) in years 2004–2009. A total of 3522 fish and lampreys individuals were captured at 32 sites by electrofishing a...
Ocena możliwości naturalnego rozrodu troci wędrownej Salmo trutta m. trutta L. w środkowym fragmencie dorzecza rzeki Łeby
From July 2007 to December 2008, a study to determine the availability of the middle part of the Łeba River basin (North Poland) for sea trout Salmo trutta m. trutta L. spawning grounds and spawning redds was conducted....