Search for dissertations about: "0 fish"

Showing result 1 - 5 of 255 swedish dissertations containing the words 0 fish.

  2. 1. Downstream migration of salmonids in regulated rivers : Non-conventional methods for fish diversion

    Author : Johan Leander; Jonatan Klaminder; Micael Jonsson; Gustav Hellström; Paul Kemp; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fish migration; Fish passage; Fish guidance; Hydropower; Atlantic salmon; Brown trout; Bubble barrier; Non-physical barrier;

    Abstract : Passages through hydropower plants can be fatal for downstream migrating salmonids (Salmo spp.). This is particularly true for large adults that are returning to the ocean after spawning. READ MORE

  4. 2. Does fish health matter? The Utility of Biomarkers in Fish for Environmental Assessment

    Author : Niklas Hanson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biomarkers; Fish; Environmental monitoring; Ecological risk assessment; Rainbow trout; Perch;

    Abstract : Two common strategies to assess exposure to environmental toxicants are to measure chemical concentrations in the environment and to examine the presence of certain species that are known to be sensit... merive to pollution. READ MORE

  5. 3. Selective serotonin re-uptake inhibitors in the environment : Effects of citalopram on fish behaviour

    Author : Martin Kellner; Håkan Olsén; Inger Porsch-Hällström; Magnus Breitholtz; Södertörns högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Citalopram; SSRI; stickleback; Baltic; behaviour; fish; feeding; anxiety; boldness; serotonin; development; Storspigg; serotonin; östersjön; SSRI; läkemedel; miljö; citalopram; ätbeteende; beteende; utveckling; Environmental Studies; Miljövetenskapliga studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Abstract : Selective serotonin re-uptake inhibitors (SSRIs) are a class of anxiolytic and anti-depressant drugs. SSRIs act on the evolutionarily ancient serotonergic system which is virtually identical throughout the vertebrate phylum. READ MORE

  6. 4. Foraging behaviour in benthivorous fish

    Author : Marika Stenberg; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Marinbiologi; resource assessment; giving-up densities; predation risk; foraging behaviour; limnology; marine biology; Ekologi; akvatisk ekologi; limnologi; group foraging; benthivorous fish; aquatic ecology; Hydrobiology; Ecology;

    Abstract : The foraging ability of an organism is essential since it affects various traits, e.g. growth, reproduction effort, social status and, ultimately, fitness. READ MORE

  7. 5. Prevention of hemolysis as a novel strategy to limit hemoglobin-mediated lipid oxidation in fish - towards a more sustainable use of fish raw materials

    Author : Semhar Ghirmai; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hemoglobin; herring Clupea harengus ; fish; rainbow trout Oncorhynchus mykiss ; erythrocyte; hemolysis; side-stream; antioxidant; lipid oxidation; blood plasma;

    Abstract : Hemoglobin (Hb) has been recognized as a main pro-oxidant in fish, causing fast and intense lipid oxidation. This thesis explores the hypothesis that maintaining red blood cells (RBCs) intact for an extended time during fish processing could delay Hb-mediated lipid oxidation. READ MORE