Publication:
Male-male competition and nuptial-colour displacement as a diversifying force in Lake Victoria cichlid fishes

Simple item page
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcidd719c9f7-6f8b-4991-b3f3-923de041a6c9
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorSeehausen, Ole
dc.contributor.authorSchluter, Dolph
dc.date.accessioned2024-10-15T06:45:02Z
dc.date.available2024-10-15T06:45:02Z
dc.date.issued2004
dc.description.abstractWe propose a new mechanism for diversification of male nuptial–colour patterns in the rapidly speciating cichlid fishes of Lake Victoria. Sympatric closely related species often display nuptial colours at opposite ends of the spectrum with males either blue or yellow to red. Colour polymorphisms within single populations are common too. We propose that competition between males for breeding sites promotes such colour diversification, and thereby speciation. We hypothesize that male aggression is primarily directed towards males of the common colour, and that rare colour morphs enjoy a negatively frequency–dependent fitness advantage. We test our hypothesis with a large dataset on the distributions and nuptial colorations of 52 species on 47 habitat islands in Lake Victoria, and with a smaller dataset on the within–spawning–site distributions of males with different coloration. We report that territories of males of the same colour are negatively associated on the spawning site, and that the distribution of closely related species over habitat islands is determined by nuptial coloration in the fashion predicted by our hypothesis. Whereas among unrelated species those with similar nuptial colour are positively associated, among closely related species those with similar colour are negatively associated and those with different colour are positively associated. This implies that negatively frequency–dependent selection on nuptial coloration among closely related species is a sufficiently strong force to override other effects on species distributions. We suggest that male–male competition is an important and previously neglected agent of diversification among haplochromine cichlid fishes.
dc.description.numberOfPages9
dc.description.sponsorshipInstitut für Ökologie und Evolution, Aquatische Ökologie
dc.identifier.doi10.7892/boris.49542
dc.identifier.publisherDOI10.1098/rspb.2004.2737
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/119877
dc.language.isoen
dc.publisherRoyal Society of London
dc.relation.ispartofProceedings of the Royal Society. Series B - biological sciences
dc.relation.issn0962-8452
dc.relation.organizationDCD5A442C44BE17DE0405C82790C4DE2
dc.subject.ddc500 - Science::570 - Life sciences; biology
dc.titleMale-male competition and nuptial-colour displacement as a diversifying force in Lake Victoria cichlid fishes
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.endPage1353
oaire.citation.issue1546
oaire.citation.startPage1345
oaire.citation.volume271
oairecerif.author.affiliationInstitut für Ökologie und Evolution, Aquatische Ökologie
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.description.ispublishedpub
unibe.eprints.legacyId49542
unibe.journal.abbrevTitleP ROY SOC B-BIOL SCI
unibe.refereedTRUE
unibe.subtype.articlejournal

Files

Original bundle
Now showing 1 - 1 of 1
Name:
2004_Ole_Schluter.pdf
Size:
318.98 KB
Format:
Adobe Portable Document Format
File Type:
text
License:
publisher
Content:
published
Download

Collections

Publications