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Showing 1 to 4 of 4 for “"Fiskeldis- og fiskalíffræði"”.
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Effects of prey distribution on resource defense, foraging behavior, and growth in stream-dwelling Arctic char (Salvelinus alpinus)
… prey provides a unique form of resource heterogeneity that may shape resource defense, foraging, and growth in stream salmonids. I conducted a field experiment on Arctic char Salvelinus alpinus in a small Icelandic stream to test different spatial distributions of drifting invertebrate prey. …
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Sea lice infestation on wild salmonids in the southern part of the Icelandic Westfjords
Laxalús, Lepeophtheirus salmonis og grálús Caligus elongatus, eru náttúruleg sníkjudýr á laxfiskum í sjó. Lýsnar nærast á slímhúð, roði og blóði fiskanna og valda þannig streitu hjá þeim. Þær geta einar og sér valdið dauða fiska séu þær í miklum mæli en geta auk þess borið með sér aðra sýkla. …
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The effects of water quality on the growth of lumpfish (Cyclopterus lumpus)
… lumpus) are of economic value as a biological lice control of Atlantic salmon (Salmo salar) in sea cages, reducing or eliminating the need for chemical or mechanical treatments for sea lice (Lepeophtheirus salmonis, Caligus elongatus). Lumpfish aquaculture production is still in early …
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Variation in shoaling behavior in lake Mývatn threespine stickleback in relation to temperature and origin
… Threespine stickleback diverge in their morphology and physiology across the lake, partly in relation to habitat diversity, e.g. in temperature. However, investigating behavioral differences within the population has been lacking. In the present study, I investigated whether variation in …