One of the most important parameters of quality regarding meat both from mammals and fish is texture. The post mortem degradation of muscle and connective tissue proteins during tenderization of meat from warm-blooded animals is unwanted in fish due to a loss of product quality. Soft fillet and gaping are common problems both in wild and farmed cod and have huge impact on the quality and the consumers’ ...

Since the end of the 20th century, many shared fish stocks throughout the world have been found in extreme danger of collapse. There are many calls for cooperation in utilizing and conserving the shared fish resources including the 1982 UN Convention on the Law of the Sea and the 1995 UN Fish Stock Agreement. This study provides an important rationale for cooperation in utilizing a shared fish stock ...

Mortality of demersal fish eggs caused by predation was investigated in this research project. The selected prey species were the Barents Sea capelin Mallotus villosus and lumpsucker Cyclopterus lumpus L, while the selected predators were capelin itself by cannibalistic behaviour and the invasive red king crab Paralithodes camtschaticus. Both capelin and lumpsucker are commercially important species ...

The Arctic is one of the least studied regions in the world and large changes in marine ecosystem dynamic are expected here because of the increasing air and ocean temperature. The central Arctic Ocean has for a long time been considered as a very low productive ecosystem, but recent estimates of primary production gives relatively high values. The shelves surrounding the Arctic Ocean are highly ...

Hva påvirker kvaliteten på saltfisk? Saltfiskens lukt, farge, konsistens og smak bestemmer kvaliteten. Dersom torsken blir dødsstiv samtidig med at saltet strømmer inn i fiskekjøttet, oppnår man et lavere vektutbytte, vann- og saltinnhold på sluttproduktet. Fisken bør derfor saltes etter dødsstivheten for å oppnå et høyt vektutbytte. Ønsker man å minimere proteintapet fra salteprosessen og få en høy ...

The limited amount of fish oils available has led to extensive search for alternative sources of oils rich in health beneficial long-chain polyunsaturated ω-3 fatty acids. The zooplankton Calanus finmarchicus, also known as redfeed, is present in large amounts in the North Atlantic and has lipid-rich stages, which can be harvested. One of the main objectives of this study was to investigate if the ...

In Vietnam, as in many other countries, the fisheries sector plays an important role in securing food, providing livelihood, and promoting economic development. Vietnamese fisheries are characterized by open access, and the number of fishing vessels has increased tremendously over the past years while the harvest growth has slowed down. This seems to indicate that the fisheries have reached the limit ...

This thesis illuminates several aspects of mate choice and sexual selection in a species with external fertilization and no parental care. At a general level we have contributed to the basic framework within evolutionary biology and ecology and at a more specific level, as the proximate mechanisms controlling the associations between immune response, parasite intensities and traits indicative of ...

<p>Climate change is a major concern in the Arctic region, as large amounts of organic carbon (C) are stored in permafrost soils and sediments. Increasing average temperatures have the potential to release that C and making it available to biologic activity. Carbon-rich, anoxic soils such as peatlands are inhabited by methanogenic archaea that can metabolize by-products of microbial C decomposition ...

<p>This thesis is motivated by the need to involve sustainability in the oil and gas industry. This thesis focuses on the sustainable transition in Equinor, the Norwegian oil and gas company. It looks, particularly, at a large established oil and gas company undergoing a sustainable change and how it performs its transition into sustainability. However, this transition poses challenges to a large ...