English
norskBlar i forfatter "Cerbule, Kristine"
Viser treff 21-30 av 30
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Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-28)In many trawl fisheries, codend size selectivity is supplemented by adding selection devices to the gear. In the Barents Sea gadoid fishery, combining diamond mesh codends with sorting grids is compulsory. However, the use of grids increases the costs and complexity of the gear, causing discontent among fishermen and prompting researchers to seek alternative solutions. Lastridge ropes are ropes ... -
Prediction of potential net panel selectivity in mesopelagic trawls
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-17)The growing interest in harvesting mesopelagic fish species has increased the need for knowledge about how trawls should be designed for optimizing the catch efficiency of these resources. Since the net herding efficiency for small mesopelagic fish species is unknown, trawls targeting these species need to consider the potential net panel selectivity along the entire trawl body. Therefore, trawl ... -
Quantification of catch composition in fisheries: A methodology and its application to compare biodegradable and nylon gillnets
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-01)When evaluating fishing gear catches, the focus is often on a few species as opposed to the entire catch. In some fisheries this can lead to ignoring major part of catch composition. Thus, there is a need for a more holistic approach when evaluating the ecological impact of using a specific fishing gear and when comparing two or more gears. In this context, it is relevant to have a method that ... -
Salmon lice (Lepeophtheirus salmonis) control method effectiveness in Atlantic salmon (Salmo salar) aquaculture. A systematic literature review.
(Master thesis; Mastergradsoppgave, 2018-05-15)Background: Salmon lice (Lepeophtheirus salmonis) is an increasing limiting factor of Atlantic salmon (Salmo salar) aquaculture development in Northern Hemisphere. Different types of treatments have been tested and used to control lice on farmed Atlantic salmon with varying results. The aim of this systematic review is to examine effectiveness expressed as the reduction of the number of lice and ... -
Salmon louse (Lepeophtheirus salmonis (Krøyer)) control methods and efficacy in atlantic salmon (Salmo salar (Linnaeus)) aquaculture: A literature review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-31)The salmon louse (<i>Lepeophtheirus salmonis</i>) causes problems in Atlantic salmon (<i>Salmo salar</i>) aquaculture in the Northern Hemisphere, because infestations can result in both a loss of production and in fish mortality. Several types of treatment have been used to control louse infestations, but these have seen varying success. The aim of this review is to examine the efficacy and safety ... -
Simple pot modification improves catch efficiency and species composition in a tropical estuary mud crab (Scylla serrata) fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-08)Pots are widely used fishing gear type for targeting different crustacean and fish species. Pot entrance size and design are among the most important technical parameters that influence the catch efficiency of certain species. An optimal pot entrance design should allow an efficient entry for the target species while preventing subsequent escape. The tropical estuary pot fishery targeting mud crab ... -
Towards Environmental Sustainability in Marine Finfish Aquaculture
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-21)Aquaculture is one of the fastest growing food production sectors and has great potential for food security and livelihoods. However, it generates concerning consequences for the environment, including chemical and biological pollution, disease outbreaks, unsustainable feeds and competition for coastal space. Recent investigations are focusing on sustainable techniques (e.g., polyculture, offshore ... -
Understanding and predicting the effect of entrance cone diameters on the catch efficiency of snow crabs (Chionoecetes opilio) in conical pots
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-11)Conical pots with a plastic entrance cone on the top are a type of fishing gear used to harvest snow crabs (Chionoecetes opilio) in Arctic regions. In this study, we assessed the effect of pot entrance diameter on the catch efficiency of snow crabs. We used catch data collected during sea trials of pots with different entrance cone diameters, and we conducted laboratory experiments where morphological ... -
Use of biodegradable materials to reduce marine plastic pollution in small scale coastal longline fisheries
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-14)Pollution from lost, abandoned, or discarded fishing gear is recognized as a global nature conservation concern. Longlining with hooks is a commonly applied fishing method in fisheries around the world. The longline gear consists of a mainline with a number of baited hooks that are attached to it by thinner twine (snoods) which are often made of plastic material such as polyamide (nylon) or ... -
Use of biodegradable plastic materials in gillnet and longline fisheries
(Doctoral thesis; Doktorgradsavhandling, 2024-05-22)Plast er blant de vanligste typene av forsøpling, og fiskeri representerer en av kildene til plastforurensning i det marine miljøet fra forlatt, mistet eller tapt fangstredskap (eng., ALDFG). Fordi plastmaterialer brukes i fiskeredskaper har ALDFG, inklusive garn og liner, negativ innvirkning på det marine miljøet. Bruk av biologisk nedbrytbare plastmaterialer i fiskeredskaper har potensial til å ...
