Assortative Mating By Diet In A Phenotypically Unimodal But Ecologically Variable Population Of Stickleback

Simple item page
dc.contributor.utaustinauthorSnowberg, Lisa K.en
dc.contributor.utaustinauthorBolnick, Daniel I.en
dc.creatorSnowberg, Lisa K.en
dc.creatorBolnick, Daniel I.en
dc.date.accessioned2015-09-09T15:49:44Zen
dc.date.available2015-09-09T15:49:44Zen
dc.date.issued2008-11en
dc.description.abstractSpeciation with gene flow may be driven by a combination of positive assortative mating and disruptive selection, particularly if selection and assortative mating act on the same trait, eliminating recombination between ecotype and mating type. Phenotypically unimodal populations of threespine stickleback (Gasterosteus aculeatus) are commonly subject to disruptive selection due to competition for alternate prey. Here we present evidence that stickleback also exhibit assortative mating by diet. Among-individual diet variation leads to variation in stable isotopes, which reflect prey use. We find a significant correlation between the isotopes of males and eggs within their nests. Because egg isotopes are derived from females, this correlation reflects assortative mating between males and females by diet. In concert with disruptive selection, this assortative mating should facilitate divergence. However, the stickleback population remains phenotypically unimodal, highlighting the fact that assortative mating and disruptive selection do not guarantee evolutionary divergence and speciation.en
dc.description.departmentIntegrative Biologyen
dc.description.sponsorshipen
dc.identifier.citationLisa K. Snowberg and Daniel I. Bolnick. Assortative Mating By Diet In A Phenotypically Unimodal But Ecologically Variable Population Of Stickleback. The American Naturalist, Vol. 172, No. 5 (Nov.,2008), pp. 733-739. DOI: 10.1086/591692en
dc.identifier.doi10.1086/591692en
dc.identifier.issn0003-0147en
dc.identifier.urihttp://hdl.handle.net/2152/31025en
dc.identifier.urlen
dc.language.isoEnglishen
dc.relation.ispartofserialAmerican Naturalisten
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en
dc.rights.holderen
dc.subjectassortative matingen
dc.subjectstable isotopesen
dc.subjectindividual specializationen
dc.subjectspeciationen
dc.subjectreproductive isolationen
dc.subjectstable carbon isotopesen
dc.subjectsympatric speciationen
dc.subjectintraspecific competitionen
dc.subjectdisruptive selectionen
dc.subjectreproductive isolationen
dc.subject3-spined sticklebacksen
dc.subjectphytophagous insectsen
dc.subjectsexual selectionen
dc.subjecttrade-offsen
dc.subjectmodelsen
dc.subjectecologyen
dc.subjectevolutionary biologyen
dc.titleAssortative Mating By Diet In A Phenotypically Unimodal But Ecologically Variable Population Of Sticklebacken
dc.typeArticleen

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
AssortativeMatingByDiet.pdf
Size:
247.53 KB
Format:
Adobe Portable Document Format
Download

Collections

UT Faculty/Researcher Works