Linked Life Data

18312316

Source:http://linkedlifedata.com/resource/pubmed/id/18312316

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2008-4-15
pubmed:abstractText
Generally, stronger reproductive isolation is expected between sympatric than between allopatric sibling species. Such reproductive character displacement should predominantly affect premating reproductive isolation and can be due to several mechanisms, including population extinction, fusion of insufficiently isolated incipient species and reinforcement of reproductive isolation in response to low hybrid fitness. Experimental data on several taxa have confirmed these theoretical expectations on reproductive character displacement, but they are restricted to animals and a few plants. Using results reported in the literature on crossing experiments in fungi, we compared the degree and the nature of reproductive isolation between allopatric and sympatric species pairs. In accordance with theoretical expectations, we found a pattern of enhanced premating isolation among sympatric sibling species in Homobasidiomycota. By contrast, we did not find evidence for reproductive character displacement in Ascomycota at similar genetic distances. Both allopatric and sympatric species of Ascomycota had similarly low levels of reproductive isolation, being mostly post-zygotic. This suggests that some phylogeny-dependent life-history trait may strongly influence the evolution of reproductive isolation between closely related species. A significant correlation was found between degree of reproductive isolation and genetic divergence among allopatric species of Homobasidiomycota, but not among sympatric ones or among Ascomycota species.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1420-9101
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
761-72
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Existence of a pattern of reproductive character displacement in Homobasidiomycota but not in Ascomycota.
pubmed:affiliation
Laboratoire Ecologie, Systématique et Evolution, Université Paris-Sud, UMR 8079, Orsay cedex, France. legac@zoology.ubc.ca
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't