| Tekijä (t): | Kahilainen, Kimmo Lehtonen, Hannu |
|---|---|
| Aineiston nimi: | Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjarvi, Finland |
| Verkko-osoite: | https://onlinelibrary.wiley.com/doi/epdf/10.1046/j.1365-2400.2002.00302.x |
| Aineistolaji: | artikkeli |
| Asiasanat: | Inari, kalanistutus, kasvu (kalat), nieriä - rautu, ravinto |
| Kustantaja: | |
| Painopaikka: | |
| Vuosi: | 2002 |
| Sivumäärä: | 8 |
| ISBN/ISSN: | |
| Lehti/sarja ym.: | Fisheries Management and Ecology, 2002,9, |
| Lisätietoa: | Habitat use, growth and food composition of native and stocked Arctic charr,Salvelinus alpinus(L.),were studied in the subarctic Lake Muddusja ̈rvi, northern Finland, to investigate reasons for poor stockingsuccess. Samples were collected with pelagic and epibenthic gill nets. Stocked and native charr occurred in similarepibethic habitats, whereas pelagic habitat was avoided. Native charr grew fast after shifting to piscivory. Growthrate of stocked charr was slow because only a small proportion of stocked fish became piscivorous during the firstyear after stocking. During the first lake year, stocked charr divided into slow-growing planktivores and fast-growing piscivores. Piscivorous stocked and native charr consumed only whitefish,Coregonus lavaretus(L.), astheir prey. Small-sized (<10 cm) whitefish were preferred when shifting to piscivory s. 197–204 |
| Sijainti: | I-Kalatutkimus: Nieriä (avokotelo 4) |