Document Detail

Can resource costs of polyploidy provide an advantage to sex?
MedLine Citation:
PMID:  23188174     Owner:  NLM     Status:  MEDLINE    
The predominance of sexual reproduction despite its costs indicates that sex provides substantial benefits, which are usually thought to derive from the direct genetic consequences of recombination and syngamy. While genetic benefits of sex are certainly important, sexual and asexual individuals, lineages, or populations may also differ in physiological and life history traits that could influence outcomes of competition between sexuals and asexuals across environmental gradients. Here, we address possible phenotypic costs of a very common correlate of asexuality, polyploidy. We suggest that polyploidy could confer resource costs related to the dietary phosphorus demands of nucleic acid production; such costs could facilitate the persistence of sex in situations where asexual taxa are of higher ploidy level and phosphorus availability limits important traits like growth and reproduction. We outline predictions regarding the distribution of diploid sexual and polyploid asexual taxa across biogeochemical gradients and provide suggestions for study systems and empirical approaches for testing elements of our hypothesis.
M Neiman; A D Kay; A C Krist
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2012-11-28
Journal Detail:
Title:  Heredity     Volume:  110     ISSN:  1365-2540     ISO Abbreviation:  Heredity (Edinb)     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-16     Completed Date:  2013-06-17     Revised Date:  2014-02-04    
Medline Journal Info:
Nlm Unique ID:  0373007     Medline TA:  Heredity (Edinb)     Country:  England    
Other Details:
Languages:  eng     Pagination:  152-9     Citation Subset:  IM    
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MeSH Terms
Adaptation, Biological
Models, Genetic
Nucleic Acids / metabolism
Phosphorus / metabolism
Reproduction / genetics
Reproduction, Asexual / genetics*
Snails / genetics
Reg. No./Substance:
0/Nucleic Acids; 27YLU75U4W/Phosphorus

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

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