Wpływ reintrodukcji pstrąga potokowego (Salmo trutta m. fario L.) w środkowej Polsce na populacje innych gatunków ryb
Journal Title: Roczniki Naukowe Polskiego Związku Wędkarskiego - Year 2013, Vol 26, Issue
Abstract
Brown trout reintroduction in Central Poland, conducted since early 1980s, has raised concerns that trout is responsible for the disappearance of some species, like lampreys, minnows, loach and gudgeon. As a result, trout stocking has been viewed by the Polish Angling Association and some ichthyologists as detrimental to the environment, leading to an impoverishment of biodiversity. The author’s extensive data on the stomach contents of trout in various waters indicates that trout’s predation isn’t responsible for the decline of coarse fish, because trout feeds on easily available and abundant fish species. Hence other factors, especially deterioration of the environment, are responsible for this decline. Since the presence of trout in small lowland streams, the only game fish that can thrive in them, stimulates social interest in the protection of the natural environment, then trout stocking may in fact enhance the protection of coarse fish.
Authors and Affiliations
Stanisław Cios
Keywords
Related Articles
- EP ID EP73299
- DOI 10.12823/sapaa.0860-648X.13003
- Views 107
- Downloads 0
Zmiany w ichtiofaunie dorzecza Słupi w okresie od 1998 do 2009 roku
The fish fauna of the Słupia River system was monitored in the same 65 sites in three sampling periods: 1998–1999, 2003–2004, and 2008–2009. The number of identified fish species was 25 in the first and second and 28 in...
Ichtiofauna małych cieków polskiego wybrzeża Bałtyku
The fish fauna of small coastal streams of the Baltic Sea was investigated in 2002–2008 by electrofishing. At 41 sampling sites a total of 8953 individuals representing 24 fish and lamprey species were collected. The mos...
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...
Monitoring ichtiofauny systemu rzecznego Skrwy Prawej: kontynuacja w latach 2010-2011
The structure and abundance of ichthyofauna in the Skrwa Prawa River system were investigated at 33 sampling sites with the use of electrofishing (standard CPUE) in 2010–2011. In this right side tributary of the Vistula...
Ichtiofauna różnych typów rybackich jezior zlewni Drawy i Piławy
The aim of the study was to determine the composition and biomass of species of fish in selected lakes that vary in types of fishery. The research was conducted with Nordic benthic and pelagic multi-mesh gillnets. Sevent...