The growth of whitefish in relation to water quality and fish species composition

被引:0
|
作者
Raitaniemi, J
Malinen, T
Nyberg, K
Rask, M
机构
[1] Univ Helsinki, Dept Ecol & Environm Sci, FIN-15210 Lahti, Finland
[2] Univ Helsinki, Dept Limnol & Environm Protect, FIN-00014 Helsinki, Finland
[3] Finnish Game & Fisheries Res Inst, FIN-16970 Evo, Finland
关键词
whitefish; growth; roach; vendace; water characteristics; acidity;
D O I
10.1006/jfbi.1998.0914
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
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 Lehmalampi, 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 at 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. (C) 1999 The Fisheries Society of the British Isles.
引用
收藏
页码:741 / 756
页数:16
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