Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada
Abstract Using a PIT detection system and two in‐stream, swim‐through antennas, we examined the movements of Arctic Grayling Thymallus arcticus through a low‐gradient (<1%), nature‐like fishpass that connected two small lakes in the Barrenlands region of northern Canada. We used an ensemble of ge...
Published in: | Transactions of the American Fisheries Society |
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Online Access: | http://dx.doi.org/10.1080/00028487.2016.1176953 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2016.1176953 |
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crwiley:10.1080/00028487.2016.1176953 2024-06-02T08:00:11+00:00 Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada Cahill, Christopher L. Howland, Kimberly L. Hulsman, Mark F. Noddin, Fred Tonn, William M. Courtice, Gregory Zhu, David Z. Natural Sciences and Engineering Research Council of Canada Natural Sciences and Engineering Research Council of Canada Canadian Circumpolar Institute Diavik Diamond Mine, Inc. 2016 http://dx.doi.org/10.1080/00028487.2016.1176953 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2016.1176953 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Transactions of the American Fisheries Society volume 145, issue 5, page 951-963 ISSN 0002-8487 1548-8659 journal-article 2016 crwiley https://doi.org/10.1080/00028487.2016.1176953 2024-05-03T10:43:42Z Abstract Using a PIT detection system and two in‐stream, swim‐through antennas, we examined the movements of Arctic Grayling Thymallus arcticus through a low‐gradient (<1%), nature‐like fishpass that connected two small lakes in the Barrenlands region of northern Canada. We used an ensemble of generalized linear mixed models to evaluate whether passage events (1) were related to fish FL, water depth in the fishpass, and/or temperature in the fishpass; and (2) exhibited any diel patterns. During two seasons, passage events were not related to fish FL or fishpass water temperature; however, the probability of a passage event occurring increased with increases in fishpass depth, which likely served as a proxy for velocity and/or discharge. Most notably, 95% ( n = 193/204) of Arctic Grayling passages occurred at night (1800–0559 hours) throughout our study. Although the cause(s) of this diel pattern were not examined directly, we hypothesized that it represented a response to avian predation given the shallow depth of the fishpass and given our observations of daytime avian predation events on Arctic Grayling in the littoral zones of the study lakes. Our results offer novel insights into correlates of Arctic Grayling passage through a fishpass and lay the foundation for future studies to address the hypotheses supported herein with well‐designed experiments to determine the mechanisms behind the patterns we observed. Received September 8, 2015; accepted April 7, 2016 Published online July 28, 2016 Article in Journal/Newspaper Arctic grayling Arctic Thymallus arcticus Wiley Online Library Arctic Canada Transactions of the American Fisheries Society 145 5 951 963 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Using a PIT detection system and two in‐stream, swim‐through antennas, we examined the movements of Arctic Grayling Thymallus arcticus through a low‐gradient (<1%), nature‐like fishpass that connected two small lakes in the Barrenlands region of northern Canada. We used an ensemble of generalized linear mixed models to evaluate whether passage events (1) were related to fish FL, water depth in the fishpass, and/or temperature in the fishpass; and (2) exhibited any diel patterns. During two seasons, passage events were not related to fish FL or fishpass water temperature; however, the probability of a passage event occurring increased with increases in fishpass depth, which likely served as a proxy for velocity and/or discharge. Most notably, 95% ( n = 193/204) of Arctic Grayling passages occurred at night (1800–0559 hours) throughout our study. Although the cause(s) of this diel pattern were not examined directly, we hypothesized that it represented a response to avian predation given the shallow depth of the fishpass and given our observations of daytime avian predation events on Arctic Grayling in the littoral zones of the study lakes. Our results offer novel insights into correlates of Arctic Grayling passage through a fishpass and lay the foundation for future studies to address the hypotheses supported herein with well‐designed experiments to determine the mechanisms behind the patterns we observed. Received September 8, 2015; accepted April 7, 2016 Published online July 28, 2016 |
author2 |
Natural Sciences and Engineering Research Council of Canada Natural Sciences and Engineering Research Council of Canada Canadian Circumpolar Institute Diavik Diamond Mine, Inc. |
format |
Article in Journal/Newspaper |
author |
Cahill, Christopher L. Howland, Kimberly L. Hulsman, Mark F. Noddin, Fred Tonn, William M. Courtice, Gregory Zhu, David Z. |
spellingShingle |
Cahill, Christopher L. Howland, Kimberly L. Hulsman, Mark F. Noddin, Fred Tonn, William M. Courtice, Gregory Zhu, David Z. Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
author_facet |
Cahill, Christopher L. Howland, Kimberly L. Hulsman, Mark F. Noddin, Fred Tonn, William M. Courtice, Gregory Zhu, David Z. |
author_sort |
Cahill, Christopher L. |
title |
Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
title_short |
Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
title_full |
Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
title_fullStr |
Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
title_full_unstemmed |
Arctic Grayling Movements through a Nature‐Like Fishpass in Northern Canada |
title_sort |
arctic grayling movements through a nature‐like fishpass in northern canada |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1080/00028487.2016.1176953 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2016.1176953 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic grayling Arctic Thymallus arcticus |
genre_facet |
Arctic grayling Arctic Thymallus arcticus |
op_source |
Transactions of the American Fisheries Society volume 145, issue 5, page 951-963 ISSN 0002-8487 1548-8659 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/00028487.2016.1176953 |
container_title |
Transactions of the American Fisheries Society |
container_volume |
145 |
container_issue |
5 |
container_start_page |
951 |
op_container_end_page |
963 |
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1800744183563026432 |