An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate
Behavioural and respiratory responses to different types of substrate were tested in burbot (Lota lota) and stone loach (Barbatula barbatula). Both species showed distinct diel cycles of activity and respiration rate, with highest values immediately after dusk and lowest during the day. In burbot, m...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2000
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Online Access: | http://dx.doi.org/10.1139/f00-211 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-211 |
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crcansciencepubl:10.1139/f00-211 2024-06-23T07:51:52+00:00 An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate Fischer, Philipp 2000 http://dx.doi.org/10.1139/f00-211 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-211 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 11, page 2336-2344 ISSN 0706-652X 1205-7533 journal-article 2000 crcansciencepubl https://doi.org/10.1139/f00-211 2024-06-13T04:10:50Z Behavioural and respiratory responses to different types of substrate were tested in burbot (Lota lota) and stone loach (Barbatula barbatula). Both species showed distinct diel cycles of activity and respiration rate, with highest values immediately after dusk and lowest during the day. In burbot, mean respiration rate over a 24-h cycle was 30% higher on pebble substrates compared with cobbles. During daytime, the difference increased to 86%, but no significant differences were found during the night. The results show that lack of adequate shelter may substantially affect metabolism and somatic growth rates in benthic fish. These effects occur even when no predator is actually present and shelter is not essential for survival. The results provide evidence that current theories on the effects of substrate and predation pressure should be applied to the benthic community with care. Because most of these theories are derived from epibenthic or pelagic model-species, where the actual presence of a threat is needed to modify behaviour and thus the specimens' metabolism, their validity for the benthic community seems to be limited. The availability of adequate shelter may be of more importance than other environmental resources for fish that have a high substrate affinity, even when no predator is actually present. Article in Journal/Newspaper Burbot Lota lota lota Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 57 11 2336 2344 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Behavioural and respiratory responses to different types of substrate were tested in burbot (Lota lota) and stone loach (Barbatula barbatula). Both species showed distinct diel cycles of activity and respiration rate, with highest values immediately after dusk and lowest during the day. In burbot, mean respiration rate over a 24-h cycle was 30% higher on pebble substrates compared with cobbles. During daytime, the difference increased to 86%, but no significant differences were found during the night. The results show that lack of adequate shelter may substantially affect metabolism and somatic growth rates in benthic fish. These effects occur even when no predator is actually present and shelter is not essential for survival. The results provide evidence that current theories on the effects of substrate and predation pressure should be applied to the benthic community with care. Because most of these theories are derived from epibenthic or pelagic model-species, where the actual presence of a threat is needed to modify behaviour and thus the specimens' metabolism, their validity for the benthic community seems to be limited. The availability of adequate shelter may be of more importance than other environmental resources for fish that have a high substrate affinity, even when no predator is actually present. |
format |
Article in Journal/Newspaper |
author |
Fischer, Philipp |
spellingShingle |
Fischer, Philipp An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
author_facet |
Fischer, Philipp |
author_sort |
Fischer, Philipp |
title |
An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
title_short |
An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
title_full |
An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
title_fullStr |
An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
title_full_unstemmed |
An experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
title_sort |
experimental test of metabolic and behavioural responses of benthic fish species to different types of substrate |
publisher |
Canadian Science Publishing |
publishDate |
2000 |
url |
http://dx.doi.org/10.1139/f00-211 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-211 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 11, page 2336-2344 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f00-211 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
11 |
container_start_page |
2336 |
op_container_end_page |
2344 |
_version_ |
1802643012522606592 |