Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams
Recent range extension of introduced salmonid species in insular Newfoundland has caused concern over their effects on native fish species. The present study was designed to investigate the stream habitat utilization of the exotic rainbow trout and the native brook char. Results of underwater field...
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Language: | English |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/z83-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/z83-165 |
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crcansciencepubl:10.1139/z83-165 2023-12-17T10:43:23+01:00 Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams Cunjak, Richard A. Green, John M. 1983 http://dx.doi.org/10.1139/z83-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/z83-165 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 61, issue 6, page 1214-1219 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/z83-165 2023-11-19T13:38:56Z Recent range extension of introduced salmonid species in insular Newfoundland has caused concern over their effects on native fish species. The present study was designed to investigate the stream habitat utilization of the exotic rainbow trout and the native brook char. Results of underwater field observations in a stream where the two species coexisted showed that brook char occupied positions with significantly lower water velocities and more cover than similar-sized rainbow trout. Brook char showed similar microhabitat preferences in a nearby stream where they were allopatric. The extent of species segregation was largely affected by local stream morphology, specifically the availability of preferred habitat. The implications for future introductions of exotic salmonids to native brook char streams are discussed. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 61 6 1214 1219 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Cunjak, Richard A. Green, John M. Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Recent range extension of introduced salmonid species in insular Newfoundland has caused concern over their effects on native fish species. The present study was designed to investigate the stream habitat utilization of the exotic rainbow trout and the native brook char. Results of underwater field observations in a stream where the two species coexisted showed that brook char occupied positions with significantly lower water velocities and more cover than similar-sized rainbow trout. Brook char showed similar microhabitat preferences in a nearby stream where they were allopatric. The extent of species segregation was largely affected by local stream morphology, specifically the availability of preferred habitat. The implications for future introductions of exotic salmonids to native brook char streams are discussed. |
format |
Article in Journal/Newspaper |
author |
Cunjak, Richard A. Green, John M. |
author_facet |
Cunjak, Richard A. Green, John M. |
author_sort |
Cunjak, Richard A. |
title |
Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
title_short |
Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
title_full |
Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
title_fullStr |
Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
title_full_unstemmed |
Habitat utilization by brook char ( Salvelinus fontinalis ) and rainbow trout ( Salmo gairdneri ) in Newfoundland streams |
title_sort |
habitat utilization by brook char ( salvelinus fontinalis ) and rainbow trout ( salmo gairdneri ) in newfoundland streams |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/z83-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/z83-165 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Zoology volume 61, issue 6, page 1214-1219 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z83-165 |
container_title |
Canadian Journal of Zoology |
container_volume |
61 |
container_issue |
6 |
container_start_page |
1214 |
op_container_end_page |
1219 |
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1785557800596799488 |