The growth of whitefish in relation to water quality and fish species composition
Identifieur interne : 000D45 ( Main/Exploration ); précédent : 000D44; suivant : 000D46The growth of whitefish in relation to water quality and fish species composition
Auteurs : J. Raitaniemi [Finlande] ; T. Malinen [Finlande] ; K. Nyberg [Finlande] ; Martti Rask [Finlande]Source :
- Journal of Fish Biology [ 0022-1112 ] ; 1999-04.
English descriptors
- KwdEn :
Abstract
Water quality in 16 Finnish lakes did not affect directly densely gill‐rakered whitefish growth, except possibly in an acid (pH 4·9) lake, Iso Lehmaälampi, where acidity may have retarded the growth of whitefish. The density of roach affected whitefish growth in the second year of life: highest growth rates were in lakes without a roach population and lowest growth rates in lakes having strong roach populations. Competition by vendace also retarded the growth of young whitefish. The efficient mass removal of roach from a eutrophic lake was considered to have increased the growth rate of young whitefish. It is suggested that an examination of the fish species composition and relative abundance, as well as the growth of whitefish, can be used as an aid in predicting the success of stocking with whitefish.
Url:
DOI: 10.1111/j.1095-8649.1999.tb02030.x
Affiliations:
- Finlande
- Päijät-Häme, Uusimaa
- Evo (Finlande), Helsinki
- Institut finlandais de recherche sur la chasse et la pêche, Station de recherche sur la chasse et la pêche d'Evo, Université d'Helsinki
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The density of roach affected whitefish growth in the second year of life: highest growth rates were in lakes without a roach population and lowest growth rates in lakes having strong roach populations. Competition by vendace also retarded the growth of young whitefish. The efficient mass removal of roach from a eutrophic lake was considered to have increased the growth rate of young whitefish. 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Nyberg</name><name sortKey="Rask, M" sort="Rask, M" uniqKey="Rask M" first="M." last="Rask">Martti Rask</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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