High frequency of natural hybrids between Atlantic salmon, Salmo salar L., and brown trout, S. trutta L., in a Swedish river
- 1 December 1991
- journal article
- Published by Wiley in Journal of Fish Biology
- Vol. 39 (sA) , 343-348
- https://doi.org/10.1111/j.1095-8649.1991.tb05096.x
Abstract
Among 332 parr from the Swedish River Grönån examined by electrophoresis, 44 (13%) were hybrids between Atlantic salmon and brown trout. The hybrid frequencies in three sections of Grönån were significantly different (23. 8 and 2%). All hybrids are evidently of natural origin. and possible factors promoting hybridization are irregular overlapping spawning times. lack of separate spawning grounds, and involvement of sneakers.Keywords
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