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Reconciling Strong Stabilizing Selection with the Maintenance of Genetic Variation in a Natural Population of Black Field Crickets ( Teleogryllus commodus )

Hunt, John; Blows, Mark; Zajitschek, Felix; Jennions, Michael; Brooks, Rob

Description

Genetic variation in single traits, including those closely related to fitness, is pervasive and generally high. By contrast, theory predicts that several forms of selection, including stabilizing selection, will eliminate genetic variation. Stabilizing selection in natural populations tends to be stronger than that assumed in theoretical models of the maintenance of genetic variation. The widespread presence of genetic variation in the presence of strong stabilizing selection is a persistent...[Show more]

dc.contributor.authorHunt, John
dc.contributor.authorBlows, Mark
dc.contributor.authorZajitschek, Felix
dc.contributor.authorJennions, Michael
dc.contributor.authorBrooks, Rob
dc.date.accessioned2015-12-10T22:21:46Z
dc.identifier.issn0016-6731
dc.identifier.urihttp://hdl.handle.net/1885/52353
dc.description.abstractGenetic variation in single traits, including those closely related to fitness, is pervasive and generally high. By contrast, theory predicts that several forms of selection, including stabilizing selection, will eliminate genetic variation. Stabilizing selection in natural populations tends to be stronger than that assumed in theoretical models of the maintenance of genetic variation. The widespread presence of genetic variation in the presence of strong stabilizing selection is a persistent problem in evolutionary genetics that currently has no compelling explanation. The recent insight that stabilizing selection often acts most strongly on trait combinations via correlational selection may reconcile this problem. Here we show that for a set of male call properties in the cricket Teleogryllus commodus, the pattern of multivariate stabilizing sexual selection is closely associated with the degree of additive genetic variance. The multivariate trait combinations experiencing the strongest stabilizing selection harbored very little genetic variation while combinations under weak selection contained most of the genetic variation. Our experiment provides empirical support for the prediction that a small number of trait combinations experiencing strong stabilizing selection will have reduced genetic variance and that genetically independent trait combinations experiencing weak selection can simultaneously harbor much higher levels of genetic variance.
dc.publisherGenetics Society of America
dc.sourceGenetics (Print) ceased Dec 2009 - don't use
dc.subjectKeywords: article; genetic trait; genetic variability; insect; male; multivariate analysis; nonhuman; priority journal; sexual selection; Teleogryllus commodus; Animals; Evolution; Genetics, Population; Gryllidae; Male; Mating Preference, Animal; Multifactorial Inh
dc.titleReconciling Strong Stabilizing Selection with the Maintenance of Genetic Variation in a Natural Population of Black Field Crickets ( Teleogryllus commodus )
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume177
dc.date.issued2007
local.identifier.absfor060412 - Quantitative Genetics (incl. Disease and Trait Mapping Genetics)
local.identifier.ariespublicationu9511635xPUB244
local.type.statusPublished Version
local.contributor.affiliationHunt, John, University of New South Wales
local.contributor.affiliationBlows, Mark, University of Queensland
local.contributor.affiliationZajitschek, Felix, University of New South Wales
local.contributor.affiliationJennions, Michael, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationBrooks, Rob, University of New South Wales
local.description.embargo2037-12-31
local.bibliographicCitation.startpage875
local.bibliographicCitation.lastpage880
local.identifier.doi10.1534/genetics.107.077057
dc.date.updated2015-12-09T08:57:32Z
local.identifier.scopusID2-s2.0-35548932808
CollectionsANU Research Publications

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