| How effective are maternal effects at having effects? | |
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MedLine Citation:
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PMID: 16615217 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The well studied trade-off between offspring size and offspring number assumes that offspring fitness increases with increasing per-offspring investment. Where mothers differ genetically or exhibit plastic variation in reproductive effort, there can be variation in per capita investment in offspring, and via this trade-off, variation in fecundity. Variation in per capita investment will affect juvenile performance directly--a classical maternal effect--while variation in fecundity will also affect offspring performance by altering the offsprings' competitive environment. The importance of this trade-off, while a focus of evolutionary research, is not often considered in discussions about population dynamics. Here, we use a factorial experiment to determine what proportion of variation in offspring performance can be ascribed to maternal effects and what proportion to the competitive environment linked to the size-number trade-off. Our results suggest that classical maternal effects are significant, but that in our system, the competitive environment, which is linked to maternal environments by fecundity, can be a far more substantial influence. |
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Authors:
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Andrew P Beckerman; Tim G Benton; Craig T Lapsley; Nils Koesters |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: 273 ISSN: 0962-8452 ISO Abbreviation: Proc. Biol. Sci. Publication Date: 2006 Feb |
Date Detail:
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Created Date: 2006-04-17 Completed Date: 2006-05-18 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 485-93 Citation Subset: IM |
Affiliation:
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School of Biological and Environmental Science, University of Stirling, Stirling FK9 4LA, UK. a.beckerman@sheffield.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acari
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growth & development,
physiology* Animals Clutch Size Female Linear Models Male Maternal Behavior Population Dynamics Random Allocation Regression Analysis |
| Comments/Corrections | |
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