| Optimal foraging for specific nutrients in predatory beetles. | |
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MedLine Citation:
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PMID: 22237910 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Evolutionary theory predicts that animals should forage to maximize their fitness, which in predators is traditionally assumed equivalent to maximizing energy intake rather than balancing the intake of specific nutrients. We restricted female predatory ground beetles (Anchomenus dorsalis) to one of a range of diets varying in lipid and protein content, and showed that total egg production peaked at a target intake of both nutrients. Other beetles given a choice to feed from two diets differing only in protein and lipid composition selectively ingested nutrient combinations at this target intake. When restricted to nutritionally imbalanced diets, beetles balanced the over- and under-ingestion of lipid and protein around a nutrient composition that maximized egg production under those constrained circumstances. Selective foraging for specific nutrients in this predator thus maximizes its reproductive performance. Our findings have implications for predator foraging behaviour and in the structuring of ecological communities. |
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Authors:
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Kim Jensen; David Mayntz; Søren Toft; Fiona J Clissold; John Hunt; David Raubenheimer; Stephen J Simpson |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-11 |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: - ISSN: 1471-2954 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Zoology, University of Oxford, , Oxford OX1 3PS, UK, School of Biological Sciences, University of Sydney, , Sydney, New South Wales 2006, Australia, Department of Bioscience, Aarhus University, , 8000 Aarhus C, Denmark, Department of Genetics and Biotechnology, Aarhus University, , 8830 Tjele, Denmark, Centre for Ecology and Conservation, University of Exeter, , Penryn TR10 9EZ, UK, Institute of Natural Sciences, Massey University, , Auckland, New Zealand. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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