Document Detail


Skewed paternity and sex allocation in hermaphroditic plants and animals.
MedLine Citation:
PMID:  11600078     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Models predict a reduced allocation to sperm when females preferentially use one of two males' sperm and the males do not know who is favoured. An analogous discounting occurs in plants when their paternity success is skewed by random, non-heritable factors such as location in the population and pollinator behaviour. We present a model that shows that skewed paternity can affect the sex allocation of hermaphrodites, that is it leads to a female-biased investment. The model highlights the close links between local mate competition and sperm competition. We use paternity data from Ficus in order to illustrate that skews in paternity success can lead to a high degree of sibling gamete competition in an apparently open breeding system. Since skews in paternity are ubiquitous in hermaphroditic plants and animals these findings should apply broadly.
Authors:
J M Greeff; J D Nason; S G Compton
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  268     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-10-15     Completed Date:  2002-01-25     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  2143-7     Citation Subset:  IM    
Affiliation:
Department of Genetics, University of Pretoria, Pretoria, 0002, South Africa. jgreeff@postino.up.ac.za
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MeSH Terms
Descriptor/Qualifier:
Animals
Competitive Behavior
Female
Fertilization
Ficus / physiology*
Hermaphroditism*
Male
Models, Biological*
Sex Determination (Genetics)*
Sex Ratio
Wasps / physiology*
Comments/Corrections

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