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Social odors conveying dominance and reproductive information induce rapid physiological and neuromolecular changes in a cichlid fish

2015-02Journal article Open access
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dc.contributor.authorSimões, José M.
dc.contributor.authorBarata, Eduardo Nuno
dc.contributor.authorHarris, Rayna M.
dc.contributor.authorO'Connell, Lauren A.
dc.contributor.authorHofmann, Hans A.
dc.contributor.authorOliveira, Rui F.
dc.date.accessioned2018-12-07T14:53:02Z
dc.date.available2018-12-07T14:53:02Z
dc.date.issued2015-02
dc.description.abstractBackground: Social plasticity is a pervasive feature of animal behavior. Animals adjust the expression of their social behavior to the daily changes in social life and to transitions between life-history stages, and this ability has an impact in their Darwinian fitness. This behavioral plasticity may be achieved either by rewiring or by biochemically switching nodes of the neural network underlying social behavior in response to perceived social information. Independent of the proximate mechanisms, at the neuromolecular level social plasticity relies on the regulation of gene expression, such that different neurogenomic states emerge in response to different social stimuli and the switches between states are orchestrated by signaling pathways that interface the social environment and the genotype. Here, we test this hypothesis by characterizing the changes in the brain profile of gene expression in response to social odors in the Mozambique Tilapia, Oreochromis mossambicus. This species has a rich repertoire of social behaviors during which both visual and chemical information are conveyed to conspecifics. Specifically, dominant males increase their urination frequency during agonist encounters and during courtship to convey chemical information reflecting their dominance status. Results: We recorded electro-olfactograms to test the extent to which the olfactory epithelium can discriminate between olfactory information from dominant and subordinate males as well as from pre- and post-spawning females. We then performed a genome-scale gene expression analysis of the olfactory bulb and the olfactory cortex homolog in order to identify the neuromolecular systems involved in processing these social stimuli. Conclusions: Our results show that different olfactory stimuli from conspecifics' have a major impact in the brain transcriptome, with different chemical social cues eliciting specific patterns of gene expression in the brain. These results confirm the role of rapid changes in gene expression in the brain as a genomic mechanism underlying behavioral plasticity and reinforce the idea of an extensive transcriptional plasticity of cichlid genomes, especially in response to rapid changes in their social environment.
dc.description.sponsorshipFundacao para a Ciencia e a Tecnologia (FCT, Portugal) [EXCL/BIA-ANM/0549/2012, Pest-OE/MAR/UI0331/2011]; Dwight W. and Blanche Faye Reeder Centennial Fellowship in Systematic and Evolutionary Biology; Institute for Cellular and Molecular Biology Fellowship; FCT
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doihttps://doi.org/10.1186/s12864-015-1255-4
dc.identifier.issn1471-2164
dc.identifier.urihttp://hdl.handle.net/10400.1/11324
dc.language.isoeng
dc.peerreviewedyes
dc.publisherBiomed Central
dc.relationMolecular mechanisms and evolutionary implications of social plasticity
dc.relationStrategic Project - UI 331 - 2011-2012
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectTilapia oreochromis mossambicus
dc.subjectGene expression profiles
dc.subjectBehavioral plasticity
dc.subjectMozambique tilapia
dc.subjectAstatotilapia burtoni
dc.subjectFunctional genomics
dc.subjectSubordinate males
dc.subjectOlfactory bulb
dc.subjectGnrh receptors
dc.subjectEvolution
dc.titleSocial odors conveying dominance and reproductive information induce rapid physiological and neuromolecular changes in a cichlid fish
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMolecular mechanisms and evolutionary implications of social plasticity
oaire.awardTitleStrategic Project - UI 331 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXCL%2FBIA-ANM%2F0549%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FMAR%2FUI0331%2F2011/PT
oaire.citation.startPage114
oaire.citation.titleBmc Genomics
oaire.citation.volume16
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBarata
person.givenNameEduardo Nuno
person.identifier.orcid0000-0001-9714-5967
person.identifier.ridB-2902-2010
person.identifier.scopus-author-id6602073256
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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relation.isAuthorOfPublication.latestForDiscoverya2bb6982-e4c8-4ea3-b160-bc3464cd960f
relation.isProjectOfPublication600f18c7-4671-4d50-9cd2-c213b208079f
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relation.isProjectOfPublication.latestForDiscovery600f18c7-4671-4d50-9cd2-c213b208079f

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