Now showing items 161-170 of 673
Instar growth and Development of Lepeophtheirus salmonis Copepodids.
(The University of Bergen, 2009-05-07)
Salmon louse Lepeophtheirus salmonis, (Krøyer, 1837) is a caligid parasite, responsible for major economical loss and welfare issues in Norwegian marine culture of salmonid species. Infections are mainly controlled with ...
Age determination of Atlantic halibut (Hippoglossus hippoglossus L.) - Size at age and regional growth differences along the coast of Norway
(The University of Bergen, 2011-05-25)
The traditional method for estimating age of Atlantic halibut (Hippoglossus hippoglossus) is through surface readings. Previous studies have not been compared to find the best practice for surface reading techniques. Based ...
Thermal stratification influences maturation and timing of spawning in a local Clupea harengus population
(John Wiley & Sons, Inc., 2013)
Long-term dynamics of wadi trees in a hyper-arid cultural landscape
(The University of Bergen, 2007-03-09)
This study focuses on the long-term dynamics of wadi (dry river valley) trees, in particular Acacia tortilis (Forssk.) Hayne, in the hyper-arid Eastern Desert of Egypt. The project was motivated by the importance of ...
Using behaviour of herring (Clupea harengus L.) to assess post-crowding stress in purse-seine fisheries
(The University of Bergen, 2014-05-30)
Within the purse-seine fishery crowding fish at high densities, during the process of slipping, has been shown to cause high mortalities. Mitigation measures are therefore needed to enable fishermen to avoid slipping fish, ...
Strategies for partition between reproductive investment and body growth in stationary and migratory stocks of Atlantic herring
(The University of Bergen, 2011-06-01)
The present study focused on the trade-off between reproductive investment and body growth of migratory and stationary Atlantic herring (Clupea harengus) populations. Published data from Norwegian spring-spawning (NSS) ...
Korleis gjekk det med havbeiteforsøket med torsk i Masfjorden?
Analysis of IgM sub-variants related to ancestral tetraploidy in salmonid fish
(The University of Bergen, 2013-03-21)
Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) possess two paralogous IgM heavy chain (μ) genes related to ancestral tetraploidy. Accordingly, IgM subpopulations of Atlantic salmon and brown trout can be ...
Escapement of gadoid fish beneath a commercial bottom trawl : relevence to the overall trawl selectivity
Escapement of Atlantic cod (Gadus morhua), haddock (Melanogrammus aegle nus) and saithe (Pollachius virens) beneath a commercial bottom trawl, rigged with a 60 cm diameter rockhopper gear, was studied in the Barents Sea. ...
Seedbank, Seedrain and Seedling Recruitment along Climate Gradients in Southern Norway
(The University of Bergen, 2010-06-01)
Recruitment through seeds is a critical process in the life history of plants. Better knowledge about this process may be helpful in predicting species ranges and range shifts under climate change. In western Norway, ...