Publication Date:
2014-10-04
Description:
Population viability is driven by individual survival, which in turn depends on individuals balancing energy budgets. As carnivores may function close to maximum sustained power outputs, decreased food availability or increased activity may render some populations energetically vulnerable. Prey theft may compromise energetic budgets of mesopredators, such as cheetahs and wild dogs, which are susceptible to competition from larger carnivores. We show that daily energy expenditure (DEE) of cheetahs was similar to size-based predictions and positively related to distance traveled. Theft at 25% only requires cheetahs to hunt for an extra 1.1 hour per day, increasing DEE by just 12%. Therefore, not all mesopredators are energetically constrained by direct competition. Other factors that increase DEE, such as those that increase travel, may be more important for population viability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scantlebury, David M -- Mills, Michael G L -- Wilson, Rory P -- Wilson, John W -- Mills, Margaret E J -- Durant, Sarah M -- Bennett, Nigel C -- Bradford, Peter -- Marks, Nikki J -- Speakman, John R -- New York, N.Y. -- Science. 2014 Oct 3;346(6205):79-81. doi: 10.1126/science.1256424. Epub 2014 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK. m.scantlebury@qub.ac.uk. ; The Lewis Foundation, Post Office Box 411703, Craighall, 2024, South Africa. Wildlife Conservation Research Unit, Zoology Department, University of Oxford, The Recanati-Kaplan Centre, Abingdon, UK. ; Swansea Laboratory for Animal Movement, College of Science, Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, UK. ; Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, USA. Department of Civil, Environmental, and Geodetic Engineering, The Ohio State University, Columbus, OH, 43210, USA. ; The Lewis Foundation, Post Office Box 411703, Craighall, 2024, South Africa. ; Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, UK. ; Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa. ; South African Wildlife Research Expedition, Global Vision International, Postnet Suite 3, Private Bag X3008, Hoedspruit, 1380, South Africa. ; School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK. ; Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, Scotland, AB24 2TZ UK. State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, Peoples Republic of China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25278609" target="_blank"〉PubMed〈/a〉
Keywords:
Acinonyx/*metabolism/*psychology
;
Animals
;
*Carnivory
;
Competitive Behavior
;
Energy Metabolism
;
*Food Chain
;
*Predatory Behavior
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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