Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators
To balance conflicting demands for food and safety from predation, foraging individuals trade off time between feeding and safety by vigilant behavior. We studied the behavior of red foxes ( Vulpes vulpes ) and pine martens ( Martes martes ) scavenging at carcasses of moose ( Alces alces ) killed by...
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fthighwire:oai:open-archive.highwire.org:jmammal:95/4/862 2023-05-15T13:13:21+02:00 Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators Wikenros, Camilla Ståhlberg, Sophie Sand, Håkan 2014-08-22 00:00:00.0 text/html http://jmammal.oxfordjournals.org/cgi/content/short/95/4/862 https://doi.org/10.1644/13-MAMM-A-125 en eng Oxford University Press http://jmammal.oxfordjournals.org/cgi/content/short/95/4/862 http://dx.doi.org/10.1644/13-MAMM-A-125 Copyright (C) 2014, Oxford University Press Feature Articles TEXT 2014 fthighwire https://doi.org/10.1644/13-MAMM-A-125 2016-11-16T19:07:04Z To balance conflicting demands for food and safety from predation, foraging individuals trade off time between feeding and safety by vigilant behavior. We studied the behavior of red foxes ( Vulpes vulpes ) and pine martens ( Martes martes ) scavenging at carcasses of moose ( Alces alces ) killed by wolves ( Canis lupus ) in Sweden. Red foxes were observed visiting carcasses more often and at a higher frequency than pine martens, which restricted carcass use to certain habitats. Both species followed a similar daily and seasonal activity pattern. The seasonal peak of scavenging, in April for pine martens and April–May for red foxes, showed that remains of wolf-killed prey are likely an important food source for both of these species during reproduction. Pine martens displayed an overall higher level of vigilance and a lower level of feeding than red foxes. Vigilance by pine martens was affected by habitat, visibility, and vegetative cover at carcass sites. Pine martens did not display increased vigilance during time periods of high red fox activity and there was no effect of the time of day. Our study showed support for the importance of interspecific predation risk leading smaller predators to trade off foraging for increased vigilance, but habitat characteristics affected vigilance patterns more than the mere presence of a larger predator. Text Alces alces Canis lupus HighWire Press (Stanford University) Journal of Mammalogy 95 4 862 870 |
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HighWire Press (Stanford University) |
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English |
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Feature Articles |
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Feature Articles Wikenros, Camilla Ståhlberg, Sophie Sand, Håkan Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
topic_facet |
Feature Articles |
description |
To balance conflicting demands for food and safety from predation, foraging individuals trade off time between feeding and safety by vigilant behavior. We studied the behavior of red foxes ( Vulpes vulpes ) and pine martens ( Martes martes ) scavenging at carcasses of moose ( Alces alces ) killed by wolves ( Canis lupus ) in Sweden. Red foxes were observed visiting carcasses more often and at a higher frequency than pine martens, which restricted carcass use to certain habitats. Both species followed a similar daily and seasonal activity pattern. The seasonal peak of scavenging, in April for pine martens and April–May for red foxes, showed that remains of wolf-killed prey are likely an important food source for both of these species during reproduction. Pine martens displayed an overall higher level of vigilance and a lower level of feeding than red foxes. Vigilance by pine martens was affected by habitat, visibility, and vegetative cover at carcass sites. Pine martens did not display increased vigilance during time periods of high red fox activity and there was no effect of the time of day. Our study showed support for the importance of interspecific predation risk leading smaller predators to trade off foraging for increased vigilance, but habitat characteristics affected vigilance patterns more than the mere presence of a larger predator. |
format |
Text |
author |
Wikenros, Camilla Ståhlberg, Sophie Sand, Håkan |
author_facet |
Wikenros, Camilla Ståhlberg, Sophie Sand, Håkan |
author_sort |
Wikenros, Camilla |
title |
Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
title_short |
Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
title_full |
Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
title_fullStr |
Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
title_full_unstemmed |
Feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
title_sort |
feeding under high risk of intraguild predation: vigilance patterns of two medium-sized generalist predators |
publisher |
Oxford University Press |
publishDate |
2014 |
url |
http://jmammal.oxfordjournals.org/cgi/content/short/95/4/862 https://doi.org/10.1644/13-MAMM-A-125 |
genre |
Alces alces Canis lupus |
genre_facet |
Alces alces Canis lupus |
op_relation |
http://jmammal.oxfordjournals.org/cgi/content/short/95/4/862 http://dx.doi.org/10.1644/13-MAMM-A-125 |
op_rights |
Copyright (C) 2014, Oxford University Press |
op_doi |
https://doi.org/10.1644/13-MAMM-A-125 |
container_title |
Journal of Mammalogy |
container_volume |
95 |
container_issue |
4 |
container_start_page |
862 |
op_container_end_page |
870 |
_version_ |
1766257886350016512 |