Colonization of Steelhead in a Natal Stream after Barrier Removal
Abstract Colonization of vacant habitats is an important process for supporting the long‐term persistence of populations and species. We used a before–after experimental design to follow the process of colonization by steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) at six monitoring sites i...
Published in: | Transactions of the American Fisheries Society |
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Online Access: | http://dx.doi.org/10.1080/00028487.2013.788560 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.788560 |
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crwiley:10.1080/00028487.2013.788560 2024-06-02T08:04:14+00:00 Colonization of Steelhead in a Natal Stream after Barrier Removal Weigel, Dana E. Connolly, Patrick J. Martens, Kyle D. Powell, Madison S. 2013 http://dx.doi.org/10.1080/00028487.2013.788560 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.788560 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Transactions of the American Fisheries Society volume 142, issue 4, page 920-930 ISSN 0002-8487 1548-8659 journal-article 2013 crwiley https://doi.org/10.1080/00028487.2013.788560 2024-05-03T10:37:56Z Abstract Colonization of vacant habitats is an important process for supporting the long‐term persistence of populations and species. We used a before–after experimental design to follow the process of colonization by steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) at six monitoring sites in a natal stream, Beaver Creek, after the modification or removal of numerous stream passage barriers. Juvenile O. mykiss were collected at monitoring sites by using a backpack electrofisher. Passive integrated transponder tags and instream tag reading stations were used in combination with 16 microsatellite markers to determine the source, extent, and success of migrant O. mykiss after implementation of the barrier removal projects. Steelhead migrated into the study area during the first spawning season after passage was established. Hatchery steelhead, although comprising more than 80% of the adult returns to the Methow River basin, constituted a small proportion (23%) of the adult O. mykiss colonizing the study area. Adult steelhead and fluvial Rainbow Trout entered the stream during the first spawning season after barrier removal and were passing the uppermost tag reader (12 km upstream from the mouth) 3–4 years later. Parr that were tagged in Beaver Creek returned as adults, indicating establishment of the anadromous life history in the study area. Population genetic measures at the lower two monitoring sites (lower 4 km of Beaver Creek) significantly changed within one generation (4–5 years). Colonization and expansion of steelhead occurred more slowly than expected due to the low number of adults migrating into the study area. Article in Journal/Newspaper Beaver Creek Wiley Online Library Transactions of the American Fisheries Society 142 4 920 930 |
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Wiley Online Library |
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language |
English |
description |
Abstract Colonization of vacant habitats is an important process for supporting the long‐term persistence of populations and species. We used a before–after experimental design to follow the process of colonization by steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) at six monitoring sites in a natal stream, Beaver Creek, after the modification or removal of numerous stream passage barriers. Juvenile O. mykiss were collected at monitoring sites by using a backpack electrofisher. Passive integrated transponder tags and instream tag reading stations were used in combination with 16 microsatellite markers to determine the source, extent, and success of migrant O. mykiss after implementation of the barrier removal projects. Steelhead migrated into the study area during the first spawning season after passage was established. Hatchery steelhead, although comprising more than 80% of the adult returns to the Methow River basin, constituted a small proportion (23%) of the adult O. mykiss colonizing the study area. Adult steelhead and fluvial Rainbow Trout entered the stream during the first spawning season after barrier removal and were passing the uppermost tag reader (12 km upstream from the mouth) 3–4 years later. Parr that were tagged in Beaver Creek returned as adults, indicating establishment of the anadromous life history in the study area. Population genetic measures at the lower two monitoring sites (lower 4 km of Beaver Creek) significantly changed within one generation (4–5 years). Colonization and expansion of steelhead occurred more slowly than expected due to the low number of adults migrating into the study area. |
format |
Article in Journal/Newspaper |
author |
Weigel, Dana E. Connolly, Patrick J. Martens, Kyle D. Powell, Madison S. |
spellingShingle |
Weigel, Dana E. Connolly, Patrick J. Martens, Kyle D. Powell, Madison S. Colonization of Steelhead in a Natal Stream after Barrier Removal |
author_facet |
Weigel, Dana E. Connolly, Patrick J. Martens, Kyle D. Powell, Madison S. |
author_sort |
Weigel, Dana E. |
title |
Colonization of Steelhead in a Natal Stream after Barrier Removal |
title_short |
Colonization of Steelhead in a Natal Stream after Barrier Removal |
title_full |
Colonization of Steelhead in a Natal Stream after Barrier Removal |
title_fullStr |
Colonization of Steelhead in a Natal Stream after Barrier Removal |
title_full_unstemmed |
Colonization of Steelhead in a Natal Stream after Barrier Removal |
title_sort |
colonization of steelhead in a natal stream after barrier removal |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1080/00028487.2013.788560 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.788560 |
genre |
Beaver Creek |
genre_facet |
Beaver Creek |
op_source |
Transactions of the American Fisheries Society volume 142, issue 4, page 920-930 ISSN 0002-8487 1548-8659 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/00028487.2013.788560 |
container_title |
Transactions of the American Fisheries Society |
container_volume |
142 |
container_issue |
4 |
container_start_page |
920 |
op_container_end_page |
930 |
_version_ |
1800748865333231616 |