Does fine sediment constrain salmonid alevin development and survival?
We applied a randomized factorial design with three sedimentation treatments (high, low, and zero sediment addition) and two predation-risk levels (predator present or absent) to assess whether the survival and emergence of brown trout (Salmo trutta) alevins were affected by sedimentation and (or) c...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2011-106 |
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crcansciencepubl:10.1139/f2011-106 2024-09-09T19:34:48+00:00 Does fine sediment constrain salmonid alevin development and survival? Louhi, P. Ovaska, M. Mäki-Petäys, A. Erkinaro, J. Muotka, T. Rosenfeld, Jordan 2011 http://dx.doi.org/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2011-106 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 68, issue 10, page 1819-1826 ISSN 0706-652X 1205-7533 journal-article 2011 crcansciencepubl https://doi.org/10.1139/f2011-106 2024-08-29T04:08:49Z We applied a randomized factorial design with three sedimentation treatments (high, low, and zero sediment addition) and two predation-risk levels (predator present or absent) to assess whether the survival and emergence of brown trout (Salmo trutta) alevins were affected by sedimentation and (or) chemical cues from a predatory fish (burbot, Lota lota). In this laboratory experiment, survival was only related to the finest organic sediment fraction (<0.074 mm), which decreased embryo survival, although only constituting less than 1.5% of all sediments. Control fish tended to postpone emergence when exposed to predator odour, whereas fish in the high-sedimentation treatment showed no response to predators. Alevins that received high sedimentation had larger yolk sacs at emergence compared with control fish. Sedimentation may thus have serious fitness consequences on salmonids, as fry with larger yolk sacs are poor swimmers and therefore more vulnerable to predation or downstream displacement. Fine-sediment deposition from the catchment or stream banks may cause a serious threat to salmonid populations, and more effective erosion control is needed to reduce inputs of fine sediments to river habitats. Article in Journal/Newspaper Burbot Lota lota lota Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 68 10 1819 1826 |
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Open Polar |
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Canadian Science Publishing |
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language |
English |
description |
We applied a randomized factorial design with three sedimentation treatments (high, low, and zero sediment addition) and two predation-risk levels (predator present or absent) to assess whether the survival and emergence of brown trout (Salmo trutta) alevins were affected by sedimentation and (or) chemical cues from a predatory fish (burbot, Lota lota). In this laboratory experiment, survival was only related to the finest organic sediment fraction (<0.074 mm), which decreased embryo survival, although only constituting less than 1.5% of all sediments. Control fish tended to postpone emergence when exposed to predator odour, whereas fish in the high-sedimentation treatment showed no response to predators. Alevins that received high sedimentation had larger yolk sacs at emergence compared with control fish. Sedimentation may thus have serious fitness consequences on salmonids, as fry with larger yolk sacs are poor swimmers and therefore more vulnerable to predation or downstream displacement. Fine-sediment deposition from the catchment or stream banks may cause a serious threat to salmonid populations, and more effective erosion control is needed to reduce inputs of fine sediments to river habitats. |
author2 |
Rosenfeld, Jordan |
format |
Article in Journal/Newspaper |
author |
Louhi, P. Ovaska, M. Mäki-Petäys, A. Erkinaro, J. Muotka, T. |
spellingShingle |
Louhi, P. Ovaska, M. Mäki-Petäys, A. Erkinaro, J. Muotka, T. Does fine sediment constrain salmonid alevin development and survival? |
author_facet |
Louhi, P. Ovaska, M. Mäki-Petäys, A. Erkinaro, J. Muotka, T. |
author_sort |
Louhi, P. |
title |
Does fine sediment constrain salmonid alevin development and survival? |
title_short |
Does fine sediment constrain salmonid alevin development and survival? |
title_full |
Does fine sediment constrain salmonid alevin development and survival? |
title_fullStr |
Does fine sediment constrain salmonid alevin development and survival? |
title_full_unstemmed |
Does fine sediment constrain salmonid alevin development and survival? |
title_sort |
does fine sediment constrain salmonid alevin development and survival? |
publisher |
Canadian Science Publishing |
publishDate |
2011 |
url |
http://dx.doi.org/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2011-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2011-106 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 68, issue 10, page 1819-1826 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f2011-106 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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68 |
container_issue |
10 |
container_start_page |
1819 |
op_container_end_page |
1826 |
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1809904235845779456 |