Sökning: "gälslagsfrekvens"

Hittade 4 uppsatser innehållade ordet gälslagsfrekvens.

  1. 1. Inkubationstemperaturens effekt på gälslagsfrekvens (metabolism) hos lax (Salmo salar)

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Mikael Nilsson Saldías; [2020]
    Nyckelord :;

    Sammanfattning : According to the Intergovernmental Panel on Climate Change (IPCC), the temperatures on Earth will increase by up to 5°C during this century, and in particular during winter at northern latitudes. Temperature influences ectotherms, like fish, in many different ways. LÄS MER

  3. 2. En jämförelse i metabolisk hastighet och furagerings beteende mellan yngel av Gullspångsöring och Klarälvsöring (Salmo trutta)

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Jenny Wanke Eriksson; [2016]
    Nyckelord :brown trout; Salmo trutta; Gullspångälven; Klarälven; local adaptation; genetic differences; metabolic rate; foraging; display; öring; Salmo trutta; Gullspångälven; Klarälven; lokal anpassning; genetiska skillnader; metabolisk hastighet; furagering; display;

    Sammanfattning : Salmonid fish such as brown trout (Salmo trutta) are known to adapt to local environments in large water systems such as in Lake Vänern. Since brown trout returns to spawn at the location of birth, they become reproductively isolated from populations spawning elsewhere. LÄS MER

  4. 3. Effect of incubation temperature on Atlantic salmon metabolism as indicated by ventilation rate

    Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper

    Författare :Claes Vernerback; [2016]
    Nyckelord :Atlantic salmon; salmon; salmonid; salmonids; fish; temperature; incubation tamperature; incubation; egg; fry; alevins; metabolism; ventilation rate; ventilation frequency; climate change; lax; laxfiskar; fisk; fiskar; temperatur; inkuberingstemperatur; inkubering; ägg; rom; metabolism; ämnesomsättning; gälslagsfrekvens; klimatförändringar;

    Sammanfattning : The global mean temperature is predicted to increase by up to 5 °C during this century. For fish, being ectotherms, temperature is one of the most important environmental factors, influencing them in a number of different ways, including effects on physiological traits, timing of life history events and behavior. LÄS MER

  5. 4. Effekter av yttäckande is kontra ljusinsläpp på öringens (Salmo trutta) antipredationsbeteende under vinter

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Emelie Haraldsson; [2015]
    Nyckelord :brown trout; winter; ice cover; instream light; predation risk; öring; vinter; yttäckande is; ljusinläpp; predationsrisk;

    Sammanfattning : Previous studies have shown that ice cover has many positive effects on brown trout (Salmo trutta), including protection from endothermic predators. I tested whether it is the cover provided by the ice itself or the reduction in light that causes behavioral changes in juvenile brown trout. LÄS MER