Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator
Summary In boreal streams, juvenile salmonids spend substantial amounts of time sheltering in the streambed and in stream wood, presumably as a means of protection against the physical environment and from terrestrial endothermic predators. Relatively little is known about sheltering by salmonids in...
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crwiley:10.1111/fwb.12854 2024-06-02T08:04:39+00:00 Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator Enefalk, Åsa Watz, Johan Greenberg, Larry Bergman, Eva Department of Environmental and Life Sciences, Karlstad University 2016 http://dx.doi.org/10.1111/fwb.12854 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12854 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12854 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 62, issue 1, page 111-118 ISSN 0046-5070 1365-2427 journal-article 2016 crwiley https://doi.org/10.1111/fwb.12854 2024-05-03T10:58:46Z Summary In boreal streams, juvenile salmonids spend substantial amounts of time sheltering in the streambed and in stream wood, presumably as a means of protection against the physical environment and from terrestrial endothermic predators. Relatively little is known about sheltering by salmonids in response to instream ectothermic predators. We tested the effects of burbot ( Lota lota ) on the winter sheltering behaviour of PIT‐tagged 0+ brown trout ( Salmo trutta ) in daylight and darkness. Sheltering in the streambed by trout was studied in the presence and absence of fine wood bundles. We found that the use of streambed and fine wood was lower in darkness than in daylight. Availability of fine wood significantly decreased sheltering in the streambed, and this effect was more pronounced in daylight than in darkness. The presence of a burbot significantly decreased sheltering in the streambed, had no effect on use of fine wood and resulted in a higher number of exposed trout. Our results indicate that juvenile brown trout decrease streambed sheltering in response to a burrowing, ectothermic predator. Article in Journal/Newspaper Burbot Lota lota lota Wiley Online Library Freshwater Biology 62 1 111 118 |
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Wiley Online Library |
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English |
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Summary In boreal streams, juvenile salmonids spend substantial amounts of time sheltering in the streambed and in stream wood, presumably as a means of protection against the physical environment and from terrestrial endothermic predators. Relatively little is known about sheltering by salmonids in response to instream ectothermic predators. We tested the effects of burbot ( Lota lota ) on the winter sheltering behaviour of PIT‐tagged 0+ brown trout ( Salmo trutta ) in daylight and darkness. Sheltering in the streambed by trout was studied in the presence and absence of fine wood bundles. We found that the use of streambed and fine wood was lower in darkness than in daylight. Availability of fine wood significantly decreased sheltering in the streambed, and this effect was more pronounced in daylight than in darkness. The presence of a burbot significantly decreased sheltering in the streambed, had no effect on use of fine wood and resulted in a higher number of exposed trout. Our results indicate that juvenile brown trout decrease streambed sheltering in response to a burrowing, ectothermic predator. |
author2 |
Department of Environmental and Life Sciences, Karlstad University |
format |
Article in Journal/Newspaper |
author |
Enefalk, Åsa Watz, Johan Greenberg, Larry Bergman, Eva |
spellingShingle |
Enefalk, Åsa Watz, Johan Greenberg, Larry Bergman, Eva Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
author_facet |
Enefalk, Åsa Watz, Johan Greenberg, Larry Bergman, Eva |
author_sort |
Enefalk, Åsa |
title |
Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
title_short |
Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
title_full |
Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
title_fullStr |
Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
title_full_unstemmed |
Winter sheltering by juvenile brown trout ( Salmo trutta) – effects of stream wood and an instream ectothermic predator |
title_sort |
winter sheltering by juvenile brown trout ( salmo trutta) – effects of stream wood and an instream ectothermic predator |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/fwb.12854 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12854 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12854 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Freshwater Biology volume 62, issue 1, page 111-118 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.12854 |
container_title |
Freshwater Biology |
container_volume |
62 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
118 |
_version_ |
1800749301382512640 |