Essays about: "laxfiskar"

Showing result 6 - 10 of 10 essays containing the word laxfiskar.

  1. 6. Livscykelanalys av laxfiskar producerade i öppna och slutna system – en jämförelse

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Amanda Dahlberg; [2017]
    Keywords : akvakultur; laxfisk; kassodling; genomflödessystem; RAS; LCA;

    Abstract : Laxfiskodling i Sverige sker vanligtvis i öppna system som kassodlingar. Debatt kring vilken miljöpåverkan som olika fiskodlingar kan ge är aktuell och nyligen kom en dom gällande öppna system som begränsar dess produktion på vissa platser i Sve-rige. READ MORE

  3. 7. Foraging efficiencies on drifting and benthic prey in juvenile salmonids - effect of light

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper

    Author : Pia L. M. Larsson; [2016]
    Keywords : Foraging; benthic; prey; drifting; salmon; trout; salmonids; light; day; night;

    Abstract : Stream living salmonids are generally regarded as drift feeders that rely upon their vision when foraging. It has been shown that salmonids become nocturnal at low water temperatures, but have a low foraging efficiency as light intensity is low, due to their dependence upon vision. READ MORE

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

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper

    Author : Claes Vernerback; [2016]
    Keywords : 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;

    Abstract : 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. READ MORE

  5. 9. Bedömning av bedövningskvalitet i samband med slakt av laxfiskar

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Emma Johansson; [2015]
    Keywords : bedövningskvalitet; bedövning; avlivning; slakt; laxfiskar; lax; välfärd;

    Abstract : Fiskkonsumtionen ökar världen över och i Sverige har årsproduktionen av matfisk ökat med 26 % mellan 2010 och 2013. Majoriteten av den svenskodlade matfisken består av olika sorters laxfiskar (Salmonidae). READ MORE

  6. 10. Predicting spawning bed erosion and longevity : a case study in tributaries to river Vindelälven, northern Sweden

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Viktor Tylstedt; [2013]
    Keywords : Salmo trutta; stream restoration; longevity; erosion; spawning bed; Vindelälven;

    Abstract : Timber floating operations in Scandinavia during the 19th and 20th centuries has contributed to severe negative impacts on riverine ecosystems. Increase in water velocity and lack of stream bed heterogeneity as a result of stream channelization lead to increased bed load transport. READ MORE