Search results for "WHITEFISH"

showing 3 items of 13 documents

Trophic ecology of piscivorous Arctic charr (Salvelinus alpinus (L.)) in subarctic lakes with contrasting food-web structures

2019

The trophic ecology of piscivorous Arctic charr (Salvelinus alpinus (L.); charr) in the food webs of large subarctic lakes is not well understood. We assessed charr diets, parasites, growth, maturity, and stable isotope ratios in Fennoscandian subarctic lakes dominated by monomorphic or polymorphic whitefish (Coregonus lavaretus (L.)) populations. Charr density was low in all lakes, except in profundal habitats. Charr shifted to piscivory at small size (16–25 cm total length) and consumed a range of prey-fish sizes (2–25 cm). Cannibalism was observed in a few individuals from one monomorphic whitefish lake. Charr matured at 37–51 cm (5–8 years old), grew to 52–74 cm maximum observed length …

siikafood-chain lengthpredationstable isotopes whitefish morphsdietravintoketjutravintoverkotsaalistuspolymorphismnieriä
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Spatial and temporal variation in larval density of coregonids and their consequences for population size estimation in Finnish lake

2011

spatial distributionCoregonus lavaretus (L.)whitefishmuikkurecruit sizevendancevertical distributionotolith analysesalueellinen jakaumasyvyysjakaumalarval distributionsiikaCoregonus albula (L.)vuosiluokkakokootoliittianalyysitpoikastiheys
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Toxicity of retene and pyrene on fish at different light conditions

2011

whitefishhaukinorthern pikelohimyrkyllisyysprotein endpointsympäristön tilaphototoxicityeleytheroembryoskirjolohipyreenitympäristömyrkytkalatfishluonnonvalotoxityrainbow troutenvironmental chemicalshiilivedytqPCRjuvenileympäristövaikutuksetsiikamikrobiologiareteenittranscriptomemicroarrayvaloaromaattiset hiilivedyt
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