Document Detail


Bateman in nature: predation on offspring reduces the potential for sexual selection.
MedLine Citation:
PMID:  23139332     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sexual selection is driven by competition for mates, and the advantage of a competitor is determined by the number of offspring it produces. Early experiments by Angus Bateman characterized this interaction, and the quantitative relationship between a male's number of mates and number of offspring is known as the Bateman slope. Sexual dimorphism, one of the most obvious results of sexual selection, largely requires a positive Bateman relationship, and the slope provides an estimate of the potential for sexual selection. However, natural selection from the environment can also influence male success, as can random effects, and some have argued for inclusion of the latter in calculations of mate success. Data from pronghorn (Antilocapra americana) reveal the presence of a positive Bateman slope in each year of a 10-year study. We found no evidence that random effects skewed male mating success; however, substantial yearly variation in the Bateman slope due to predation on fawns was evident. These results support the validity of the Bateman relationship, yet they also demonstrate that environmental or extrinsic influences can limit the potential for sexual selection.
Authors:
John Byers; Stacey Dunn
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  338     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-09     Completed Date:  2012-12-03     Revised Date:  2013-09-24    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  802-4     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, University of Idaho, Moscow, ID 83844-3051, USA. jbyers@uidaho.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Antelopes / physiology*
Biological Evolution
Coyotes
Female
Linear Models
Male
Mating Preference, Animal*
Montana
Predatory Behavior*
Reproduction
Selection, Genetic
Sex Characteristics
Sex Ratio
Sexual Behavior, Animal*
Comments/Corrections
Comment In:
Science. 2012 Nov 9;338(6108):749-50   [PMID:  23139319 ]
Science. 2013 May 3;340(6132):549   [PMID:  23641093 ]
Science. 2013 May 3;340(6132):549   [PMID:  23641094 ]
Science. 2013 May 3;340(6132):549   [PMID:  23641096 ]
Science. 2013 May 3;340(6132):549   [PMID:  23641095 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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