Year: 1983
Type: report
Abstract: The accumulation of organic wastes at the seabed in Norwegian fish farms is a growing problem.The difficulties usually appear after a few years of operation, and involve loss of appetite, damage of fish gills and increasing mortality of the fish.New farms should take particular care in site selection, and if necessary be able to change locality.Pollution mav be indicated by periodical smell of hydrogensulfide, development of bubles, accumulation of organic wastes and irritation of fish gills.The.cac.cumul::ttion •of organic wastes at Austevoll Marine Aquaculture Station and other farms in the area are described.Three common methods to clean the polluted areas are described with particular reference to the use of submersible mixers.A brief describtion is given of some ~esearch projects.The pollution problems in Norwegian fish farms are probably more common than earlier expected.The fish farmer should carefully analyze the location of the farm and all routine operations in connection with feeding , cleaning and caretaking of the fish in order to avoid such problems.
Authors: Bjørn Braaten, Jan Aure, Arne Ervik, Erik Boge
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2488939200