Sökning: "Platichthys flesus"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Platichthys flesus.

  1. 1. Diet overlap between Cod (Gadus morhua) and European Flounder (Platichthys flesus) in the central Baltic Sea

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Kevin Haase; [2018]
    Nyckelord :diet overlap; diet; cod; gadus morhua; flounder; platichthys flesus; Baltic Sea;

    Sammanfattning : The Baltic Sea is a frontrunner in ecosystem analysis and assessment, which have been used also in multispecies fisheries management advice. In the Baltic Sea, the multispecies assessment and management advice have been focused on the pelagic interactions between cod (Gadus morhua), sprat (Sprattus sprattus) and herring (Clupea harengus), by virtue of their well-known ecology. LÄS MER

  3. 2. A diet study of post-breeding Great cormorants (Phalacrocorax carbo sinensis) on Gotland

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Anton Larsson; [2017]
    Nyckelord :Baltic sea; regurgitated pellets; otoliths; prey species composition; sea birds;

    Sammanfattning : The Swedish population of great cormorant (Phalacrocorax carbo sinensis) has rapidly increased to over 40 000 breeding couples since the EU-protection 1980. Since the cormorant are high efficient predators living in large colonies, they are accused for reducing fish populations and competing with fishery. LÄS MER

  4. 3. Opportunities for hybridization between two sympatric flounder (Platichthys flesus) ecotypes in the Baltic Sea

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Isa Wallin; [2016]
    Nyckelord :Flounder; ecology; hybridization; temperature; Baltic Sea;

    Sammanfattning : The Baltic Sea flounder is separated into two ecotypes with different reproductive characteristics, one spawning off-shore at higher salinities and one spawning in coastal areas at lower salinities. However, coastal spawning flounder have also been found off-shore during the spawning season, especially in cold years, suggesting that the more stable temperatures in off-shore waters are more suitable for reproduction than in coastal areas during cold years. LÄS MER

  5. 4. EGG BUOYANCY AND SURVIVAL PROBABILITIES OF BALTIC FLOUNDER (PLATICHTHYS FLESUS) : DIFFERENCES BETWEEN SPAWNING AREAS AND INTER-ANNUAL VARIATION IN CONDITIONS FOR REPRODUCTION

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Sofia Nyberg; [2015]
    Nyckelord :Baltic Sea; egg buoyancy; flounder; Platichthys flesus; reproduction; salinity; egg specific gravity;

    Sammanfattning : The reproductive success for pelagic spawning Baltic flounders is strongly linked to the hydrodynamics in the spawning areas. Egg survival is dependent upon the ability to achieve neutral buoyancy at a depth interval where temperature and oxygen concentrations are favourable for egg development. LÄS MER

  7. 5. Food choice of different size classes of flounder (Platichthys flesus) in the Baltic Sea

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Jennie Ljungberg; [2015]
    Nyckelord :Flounder; Baltic Sea; Feeding preference; Blue mussels; Condition of flounders; Flundra; Östersjön; Födopreferens; Födoval; Blåmusslor; Kondition hos flundror;

    Sammanfattning : Flounder, Platichthys flesus, is considered to be an important predator on blue mussels, Mytilus edulis, in the Baltic Sea. The purpose of this study was to investigate if flounder diet, i.e. blue mussels, could have an impact on the relationship between weight and length of flounders, i. LÄS MER