Sökning: "Clupea harengus"

Visar resultat 1 - 5 av 19 avhandlingar innehållade orden Clupea harengus.

  1. 1. Size-selection of herring (Clupea harengus membras) in a sustainable fishery

    Detta är en avhandling från Umeå : Sveriges Lantbruksuniversitet

    Författare :Mikael Lundin; Högskolan i Gävle.; Sveriges lantbruksuniversitet.; [2012]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; herrings; clupea harengus; size; bycatch; baltic sea;

    Sammanfattning : .... LÄS MER

  2. 2. Antioxidative Properties of Herring (Clupea harengus) Press Juice in Food, In Vitro and In Vivo Model Systems

    Detta är en avhandling från Umeå : Sveriges Lantbruksuniversitet

    Författare :Thippeswamy Sannaveerappa; [2007]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; antioxidants; monocytes; washed cod mince; Clupea harengus; LDL oxidation; press juice; oxidation; ORAC; hemoglobin; alpha-tocopherol; herring; in vitro digestion.;

    Sammanfattning : Some species like herring (Clupea harengus) are currently under-utilized due to their small size, dark colour and susceptibility to lipid oxidation. Our hypothesis has been that the high susceptibility of herring to oxidation makes it well equipped with natural antioxidants, both fat and water soluble ones. LÄS MER

  3. 3. Feeding ecology of Baltic Sea herring (Clupea harengus L.) : field and model studies of a dominant zooplanktivor

    Detta är en avhandling från Stockholm : Department of Systems Ecology, Stockholm University

    Författare :Fredrik Arrhenius; Stockholms universitet.; [1995]

    Sammanfattning : .... LÄS MER

  4. 4. Zooplankton growth and trophic linkages Implications for fish feeding conditions in the Baltic Sea

    Detta är en avhandling från Stockholm : Department of System Ecology, Stockholm University

    Författare :Towe Holmborn; Stockholms universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; AARS activity; biochemical markers; Clupea harengus; copepod physiology; food web interactions; non-indigenous species; RNA-based indices; Sprattus sprattus; stable isotopes; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Marine ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Marin ekologi; marin ekologi; Marine Ecology;

    Sammanfattning : The aim of this Thesis was to improve our understanding and assessment of feeding conditions for zooplanktivorous fish in the Baltic Sea.We investigated (papers I, II) the usefulness of biochemical proxies for assessments of growth and metabolic rates in the dominant Baltic copepod Acartia bifilosa. LÄS MER

  5. 5. Dynamics of astaxanthin, tocopherol (Vitamin E) and thiamine (Vitamin B1) in the Baltic Sea ecosystem Bottom-up effects in an aquatic food web

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Norbert Häubner; Uppsala universitet.; [2010]
    Nyckelord :Baltic Sea; carotenoids; astaxanthin; tocopherols; Vitamin E; thiamine; Vitamin B1; pelagic food web; eutrophication; M74; phytoplankton; zooplankton; sprat; Sprattus sprattus balticus; herring; Clupea harengus; salmon; Salmo salar; cod; Gadus morhua; High Performance Liquid Chromatography HPLC ; electrochemical detection ECD ;

    Sammanfattning : The thesis combines laboratory experiments and field expeditions to study production, transfer and consumption of non-enzymatic antioxidants and thiamine in an aquatic food web. In particular, I (1) documented spatial and seasonal variation of tocopherols and carotenoids in the Baltic Sea pelagic food web, and (2) examined the effects of abiotic and biotic factors on tocopherol, carotenoid and thiamine concentrations in phytoplankton, zooplankton and fish. LÄS MER