| MALE COCKROACHES PREFER A HIGH CARBOHYDRATE DIET THAT MAKES THEM MORE ATTRACTIVE TO FEMALES: IMPLICATIONS FOR THE STUDY OF CONDITION DEPENDENCE. | |
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MedLine Citation:
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PMID: 21644951 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Sexual selection is a major force driving the evolution of elaborate male sexual traits. Handicap models of sexual selection predict that male sexual traits should covary positively with condition, making them reliable indicators of male quality. However, most studies have either manipulated condition through varying diet quantity and/or caloric content without knowledge of specific nutrient effects or have correlated proxies of condition with sexual trait expression. We used nutritional geometry to quantify protein and carbohydrate intake by male cockroaches, Nauphoeta cinerea, and related this to sex pheromone expression, attractiveness, and dominance status. We found that carbohydrate, but not protein, intake is related to male sex pheromone expression and attractiveness but not dominance status. Additionally, we related two condition proxies (weight gain and lipid reserves) to protein and carbohydrate acquisition. Weight gain increased with the intake of both nutrients, whereas lipid reserves only increased with carbohydrate intake. Importantly, lipid accumulation was not as responsive to carbohydrate intake as attractiveness and thus was a less-accurate condition proxy. Moreover, males preferentially consumed high carbohydrate diets with little regard for protein content suggesting that they actively increase their carbohydrate intake thereby maximizing their reproductive fitness by being attractive. |
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Authors:
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Sandra H South; Clarissa M House; Allen J Moore; Stephen J Simpson; John Hunt |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-15 |
Journal Detail:
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Title: Evolution; international journal of organic evolution Volume: 65 ISSN: 1558-5646 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-6-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373224 Medline TA: Evolution Country: - |
Other Details:
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Languages: ENG Pagination: 1594-1606 Citation Subset: - |
Copyright Information:
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© 2011 The Author(s). Evolution© 2011 The Society for the Study of Evolution. |
Affiliation:
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Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Cornwall Campus, Penryn TR10 9EZ, United Kingdom E-mail: sandra.south@ebc.uu.se E-mail: c.m.house@exeter.ac.uk E-mail: a.j.moore@exeter.ac.uk School of Biological Sciences, The University of Sydney, Sydney 2006, New South Wales, Australia E-mail: stephen.simpson@bio.usyd.edu.au E-mail: j.hunt@exeter.ac.uk. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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