Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey
Generalist predators typically have broad diets, but their diets may become constrained when one species of prey becomes disproportionately available. Yet there is poor understanding regarding whether generalist predators exhibit stereotypic relationships with pulsed prey resources. We used telemetr...
Published in: | Canadian Journal of Zoology |
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2016
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Online Access: | http://dx.doi.org/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2015-0127 |
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crcansciencepubl:10.1139/cjz-2015-0127 2024-06-23T07:54:47+00:00 Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey Bastille-Rousseau, Guillaume Rayl, Nathaniel D. Ellington, E. Hance Schaefer, James A. Peers, Michael J.L. Mumma, Matthew A. Mahoney, Shane P. Murray, Dennis L. 2016 http://dx.doi.org/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2015-0127 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 94, issue 3, page 191-198 ISSN 0008-4301 1480-3283 journal-article 2016 crcansciencepubl https://doi.org/10.1139/cjz-2015-0127 2024-06-13T04:10:47Z Generalist predators typically have broad diets, but their diets may become constrained when one species of prey becomes disproportionately available. Yet there is poor understanding regarding whether generalist predators exhibit stereotypic relationships with pulsed prey resources. We used telemetry data from 959 woodland caribou (Rangifer tarandus caribou (Gmelin, 1788); 146 adult females, 813 calves), 61 coyotes (Canis latrans Say, 1823), and 55 black bears (Ursus americanus Pallas, 1780) to investigate how two generalist predators interacted with caribou neonates on the island of Newfoundland. We examined the similarity of patterns of habitat use between caribou and their predators across time and related this similarity to interspecific spatiotemporal co-occurrence and mortality risk for caribou neonates. The similarity in habitat use between coyotes and caribou mirrored variation in juvenile hazard risk, but had weak association with actual co-occurrence with caribou. Bears and caribou exhibited less similarity in habitat use during the calving season than coyotes and caribou. The relationship between habitat use of bear and caribou did not correspond with either co-occurrence patterns or overall risk for caribou neonates. Our work illustrates how risk for a prey species can be shaped differently based upon differences between the behavioural strategies of generalist predator species. Article in Journal/Newspaper Newfoundland Rangifer tarandus Canadian Science Publishing Canadian Journal of Zoology 94 3 191 198 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Generalist predators typically have broad diets, but their diets may become constrained when one species of prey becomes disproportionately available. Yet there is poor understanding regarding whether generalist predators exhibit stereotypic relationships with pulsed prey resources. We used telemetry data from 959 woodland caribou (Rangifer tarandus caribou (Gmelin, 1788); 146 adult females, 813 calves), 61 coyotes (Canis latrans Say, 1823), and 55 black bears (Ursus americanus Pallas, 1780) to investigate how two generalist predators interacted with caribou neonates on the island of Newfoundland. We examined the similarity of patterns of habitat use between caribou and their predators across time and related this similarity to interspecific spatiotemporal co-occurrence and mortality risk for caribou neonates. The similarity in habitat use between coyotes and caribou mirrored variation in juvenile hazard risk, but had weak association with actual co-occurrence with caribou. Bears and caribou exhibited less similarity in habitat use during the calving season than coyotes and caribou. The relationship between habitat use of bear and caribou did not correspond with either co-occurrence patterns or overall risk for caribou neonates. Our work illustrates how risk for a prey species can be shaped differently based upon differences between the behavioural strategies of generalist predator species. |
format |
Article in Journal/Newspaper |
author |
Bastille-Rousseau, Guillaume Rayl, Nathaniel D. Ellington, E. Hance Schaefer, James A. Peers, Michael J.L. Mumma, Matthew A. Mahoney, Shane P. Murray, Dennis L. |
spellingShingle |
Bastille-Rousseau, Guillaume Rayl, Nathaniel D. Ellington, E. Hance Schaefer, James A. Peers, Michael J.L. Mumma, Matthew A. Mahoney, Shane P. Murray, Dennis L. Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
author_facet |
Bastille-Rousseau, Guillaume Rayl, Nathaniel D. Ellington, E. Hance Schaefer, James A. Peers, Michael J.L. Mumma, Matthew A. Mahoney, Shane P. Murray, Dennis L. |
author_sort |
Bastille-Rousseau, Guillaume |
title |
Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
title_short |
Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
title_full |
Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
title_fullStr |
Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
title_full_unstemmed |
Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
title_sort |
temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey |
publisher |
Canadian Science Publishing |
publishDate |
2016 |
url |
http://dx.doi.org/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2015-0127 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2015-0127 |
genre |
Newfoundland Rangifer tarandus |
genre_facet |
Newfoundland Rangifer tarandus |
op_source |
Canadian Journal of Zoology volume 94, issue 3, page 191-198 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2015-0127 |
container_title |
Canadian Journal of Zoology |
container_volume |
94 |
container_issue |
3 |
container_start_page |
191 |
op_container_end_page |
198 |
_version_ |
1802647051192762368 |