Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L.
Based on data from Norwegian streams with sympatric populations of Atlantic salmon and brown trout, it is suggested that temporal segregation is the main mechanism segregating Atlantic salmon and brown trout during spawning. Peak spawning of trout was about 15 days earlier than that of salmon. Physi...
Published in: | Journal of Fish Biology |
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Language: | English |
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1988
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1988.tb05477.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05477.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05477.x |
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crwiley:10.1111/j.1095-8649.1988.tb05477.x 2024-09-15T17:55:56+00:00 Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. Heggberget, T. G. Haukebø, T. Mork, J. Ståhl, G. 1988 http://dx.doi.org/10.1111/j.1095-8649.1988.tb05477.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05477.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05477.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 33, issue 3, page 347-356 ISSN 0022-1112 1095-8649 journal-article 1988 crwiley https://doi.org/10.1111/j.1095-8649.1988.tb05477.x 2024-08-01T04:22:11Z Based on data from Norwegian streams with sympatric populations of Atlantic salmon and brown trout, it is suggested that temporal segregation is the main mechanism segregating Atlantic salmon and brown trout during spawning. Peak spawning of trout was about 15 days earlier than that of salmon. Physical factors, such as water depth, water velocity and distance from the river banks segregate spawning sites of salmon and trout poorly. Gravel sizes of the redds of salmon and trout were significantly different, though with a considerable overlap, and mean egg depth of salmon and trout were 0.18 and 0.12 m, respectively, probably attributable to the different size of spawners of salmon and trout. None of the temporal or spatial parameters analysed segregate spawners of salmon and trout completely. Species determination of eggs and alevins from the redds showed no interspecific superimposition of redds. It is, therefore, concluded that low survival of hybrids after hatching does not explain the low frequency of hybrids observed in sympatric populations of salmon and trout. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 33 3 347 356 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Based on data from Norwegian streams with sympatric populations of Atlantic salmon and brown trout, it is suggested that temporal segregation is the main mechanism segregating Atlantic salmon and brown trout during spawning. Peak spawning of trout was about 15 days earlier than that of salmon. Physical factors, such as water depth, water velocity and distance from the river banks segregate spawning sites of salmon and trout poorly. Gravel sizes of the redds of salmon and trout were significantly different, though with a considerable overlap, and mean egg depth of salmon and trout were 0.18 and 0.12 m, respectively, probably attributable to the different size of spawners of salmon and trout. None of the temporal or spatial parameters analysed segregate spawners of salmon and trout completely. Species determination of eggs and alevins from the redds showed no interspecific superimposition of redds. It is, therefore, concluded that low survival of hybrids after hatching does not explain the low frequency of hybrids observed in sympatric populations of salmon and trout. |
format |
Article in Journal/Newspaper |
author |
Heggberget, T. G. Haukebø, T. Mork, J. Ståhl, G. |
spellingShingle |
Heggberget, T. G. Haukebø, T. Mork, J. Ståhl, G. Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
author_facet |
Heggberget, T. G. Haukebø, T. Mork, J. Ståhl, G. |
author_sort |
Heggberget, T. G. |
title |
Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
title_short |
Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
title_full |
Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
title_fullStr |
Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
title_full_unstemmed |
Temporal and spatial segregation of spawning in sympatric populations of Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L. |
title_sort |
temporal and spatial segregation of spawning in sympatric populations of atlantic salmon, salmo salar l., and brown trout, salmo trutta l. |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1988.tb05477.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05477.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05477.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 33, issue 3, page 347-356 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1988.tb05477.x |
container_title |
Journal of Fish Biology |
container_volume |
33 |
container_issue |
3 |
container_start_page |
347 |
op_container_end_page |
356 |
_version_ |
1810432148132331520 |