Predator-dependent functional response in wolves: from food limitation to surplus killing

The Journal of Animal Ecology
Barbara ZimmermannHarry Peter Andreassen

Abstract

The functional response of a predator describes the change in per capita kill rate to changes in prey density. This response can be influenced by predator densities, giving a predator-dependent functional response. In social carnivores which defend a territory, kill rates also depend on the individual energetic requirements of group members and their contribution to the kill rate. This study aims to provide empirical data for the functional response of wolves Canis lupus to the highly managed moose Alces alces population in Scandinavia. We explored prey and predator dependence, and how the functional response relates to the energetic requirements of wolf packs. Winter kill rates of GPS-collared wolves and densities of cervids were estimated for a total of 22 study periods in 15 wolf territories. The adult wolves were identified as the individuals responsible for providing kills to the wolf pack, while pups could be described as inept hunters. The predator-dependent, asymptotic functional response models (i.e. Hassell-Varley type II and Crowley-Martin) performed best among a set of 23 competing linear, asymptotic and sigmoid models. Small wolf packs acquired >3 times as much moose biomass as required to sustain their field metab...Continue Reading

References

Aug 10, 1999·Theoretical Population Biology·C CosnerD B Olson
Jun 12, 2004·Biological Reviews of the Cambridge Philosophical Society·Jonathan M JeschkeRalph Tollrian
Jan 5, 2005·Comptes rendus biologies·Roger ArditiChristian Jost
Apr 28, 2005·The Journal of Experimental Biology·Kenneth A Nagy
Oct 26, 2007·Nature·John M FryxellCraig Packer
Aug 8, 2009·Biological Reviews of the Cambridge Philosophical Society·Steven L Lima
Sep 29, 2009·Ecology Letters·Daniel R MacNultyCraig Packer
Aug 19, 2011·Proceedings. Biological Sciences·Olof LibergHåkan Sand
Aug 12, 2014·The Journal of Animal Ecology·Barbara ZimmermannHarry Peter Andreassen
Jun 1, 1990·Oecologia·R Arditi, H R Akçakaya

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Citations

Aug 10, 2015·Integrative and Comparative Biology·Rebecca WheatleyRobbie S Wilson
Dec 29, 2016·PloS One·Håkan SandPetter Wabakken
Aug 12, 2014·The Journal of Animal Ecology·Barbara ZimmermannHarry Peter Andreassen
Aug 24, 2017·Scientific Reports·Camilla WikenrosRoger Bergström
Dec 31, 2016·Ecology and Evolution·Camilla WikenrosJohan Månsson
Jun 20, 2020·Scientific Reports·Andrés OrdizHåkan Sand
Jul 28, 2016·BMC Veterinary Research·Boris FuchsJon M Arnemo
Jan 2, 2019·Ecology and Evolution·Cyril MilleretHåkan Sand
Oct 19, 2019·Ecology and Evolution·Tyler B MuhlyMarco Musiani
Mar 11, 2020·The ISME Journal·Nermin AkdumanRalf J Sommer
Jul 20, 2018·Journal of the Royal Society, Interface·Jeff F ZhangChristopher C Drovandi
Sep 21, 2020·Journal of Environmental Management·Anders Skonhoft, Veronika Friberg
Dec 12, 2020·Scientific Reports·Camilla WikenrosBarbara Zimmermann
Aug 23, 2019·Research in Veterinary Science·Francisco José Martínez-RondánCarlos Martínez-Carrasco
Aug 26, 2019·Theoretical Population Biology·Iulia Martina Bulai, Frank M Hilker
Apr 8, 2021·Proceedings. Biological Sciences·Camilla WikenrosMikael Åkesson

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