Linked Life Data

9872008

Source:http://linkedlifedata.com/resource/pubmed/id/9872008

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1411
pubmed:dateCreated
1999-1-25
pubmed:abstractText
Female poeciliid fishes of the sister genera Xiphophorus and Priapella share a preference for males with swords, despite phylogenetic information suggesting that swords arose in Xiphophorus after the divergence of the two genera. This study examines the strength of sword and body-size preferences in a representative of both genera. A comparison of the preference functions reveals that the strength of the preference favouring a sword in P. olmecae is significantly stronger than that in X. helleri. This result demonstrates that the pre-existing bias is not evolutionarily fixed, and that there has been change in the bias favouring the sword, in either the Priapella lineage, or the Xiphophorus lineage, or in both. Although females in both species prefer conspecific males with swords, only X. helleri females also demonstrate a body-size preference. The preference functions for body size and sword length for X. helleri are not significantly different, whereas in P. olmecae the preference function for sword length is significantly stronger than for body size. These combined results indicate that an ancestral bias for body size cannot alone explain the pre-existing bias favouring a sword in P. olmecae.
pubmed:grant
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0962-8452
pubmed:author
pubmed:issnType
Print
pubmed:day
22
pubmed:volume
265
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2223-8
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Evolutionary change in a receiver bias: a comparison of female preference functions.
pubmed:affiliation
University of Nebraska-Lincoln 68588, USA. basolo@niko.unl.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.