Search for dissertations about: "salmonids"
Showing result 21 - 25 of 42 swedish dissertations containing the word salmonids.
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21. Metabolomics as a tool to evaluate salmonid response to alternative feed ingredients
Abstract : Aquaculture has largely expanded in the last decades to satisfy the growing market demands for fish products. Fishmeal and fish oil, which are traditionally used in salmonid feeds, are becoming unsustainable. Development of aquafeeds based on alternative ingredients are needed to overcome the ecological challenges. READ MORE
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22. Growth hormone and somatolactin function during sexual maturation of female Atlantic salmon
Abstract : Background and aims: The growth hormone-insulin-like growth factor I (GH-IGF-I) system is known to act during sexual maturation of female salmonids, but the specific roles are not known. Somatolactin (SL) is a pituitary hormone closely related to GH and is only found in fish. In some species, including salmonids, there are two forms, SLa and SLß. READ MORE
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23. Age-class interactions in Atlantic salmon and brown trout: Effects on habitat use and performance
Abstract : This thesis investigates the underlying mechanisms and the density-regulatory effects of age-class interactions, using juvenile Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.) as study species. READ MORE
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24. Effects of fine woody debris on juvenile brown trout (Salmo trutta) and drifting invertebrates
Abstract : In boreal forest streams, woody debris is an important habitat component. Stream invertebrates and salmonids such as brown trout benefit from in-stream wood. READ MORE
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25. Ecology, tourism and management of harbour seals (Phoca vitulina)
Abstract : In cases where human and wildlife are co-using the same geographical areas and resources, management issues often get complex and stakeholder conflicts are common. The Icelandic harbour seal (Phoca vitulina) population is rapidly decreasing, but direct culling of seals still occurs. READ MORE