High frequency of natural hybrids between Atlantic salmon, Salmo salar L., and brown trout, S. trutta L., in a Swedish river

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 p...

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Bibliographic Details
Published in:Journal of Fish Biology
Main Authors: Jansson, H., Holmgren, I., Wedin, K., Anderson, T.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1991
Subjects:
Atlantic salmon
Salmo salar
Online Access:http://dx.doi.org/10.1111/j.1095-8649.1991.tb05096.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1991.tb05096.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1991.tb05096.x
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Summary: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.

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