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Maternal-by-environment but not genotype-by-environment interactions in a fish without parental care

Vega-Trejo, Regina; Head, Megan; Jennions, MIchael D.; Kruuk, Loeske

Description

The impact of environmental conditions on the expression of genetic variance and on maternal effects variance remains an important question in evolutionary quantitative genetics. We investigate here the effects of early environment on variation in seven adult life history, morphological, and secondary sexual traits (including sperm characteristics) in a viviparous poeciliid fish, the mosquitofish Gambusia holbrooki. Specifically, we manipulated food availability during early development and...[Show more]

dc.contributor.authorVega-Trejo, Regina
dc.contributor.authorHead, Megan
dc.contributor.authorJennions, MIchael D.
dc.contributor.authorKruuk, Loeske
dc.date.accessioned2021-05-12T23:14:45Z
dc.identifier.issn0018-067X
dc.identifier.urihttp://hdl.handle.net/1885/232975
dc.description.abstractThe impact of environmental conditions on the expression of genetic variance and on maternal effects variance remains an important question in evolutionary quantitative genetics. We investigate here the effects of early environment on variation in seven adult life history, morphological, and secondary sexual traits (including sperm characteristics) in a viviparous poeciliid fish, the mosquitofish Gambusia holbrooki. Specifically, we manipulated food availability during early development and then assessed additive genetic and maternal effects contributions to the overall phenotypic variance in adults. We found higher heritability for female than male traits, but maternal effects variance for traits in both sexes. An interaction between maternal effects variance and rearing environment affected two adult traits (female age at maturity and male size at maturity), but there was no evidence of trade-offs in maternal effects across environments. Our results illustrate (i) the potential for pre-natal maternal effects to interact with offspring environment during development, potentially affecting traits through to adulthood and (ii) that genotype-by-environment interactions might be overestimated if maternal-by-environment interactions are not accounted for, similar to heritability being overestimated if maternal effects are ignored. We also discuss the potential for dominance genetic variance to contribute to the estimate of maternal effects variance.
dc.description.sponsorshipThe study was financially supported by the Australian Research Council (DP160100285) to M.D.J. R.V.T. was supported by fellowships from Consejo Nacional de Ciencia y Tecnología-México and the Australian National University’s Research School of Biology. L.E.B.K. was supported by an Australian Research Council Future Fellowship (FT110100453).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2018 The Genetics Society
dc.sourceHeredity
dc.titleMaternal-by-environment but not genotype-by-environment interactions in a fish without parental care
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume120
dcterms.dateAccepted2017-10-30
dc.date.issued2017-12-11
local.identifier.absfor060201 - Behavioural Ecology
local.identifier.ariespublicationa383154xPUB9196
local.publisher.urlhttps://www.nature.com/
local.type.statusAccepted Version
local.contributor.affiliationVega Trejo, Regina, College of Science, ANU
local.contributor.affiliationHead, Megan, College of Science, ANU
local.contributor.affiliationJennions, Michael, College of Science, ANU
local.contributor.affiliationKruuk, Loeske, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/DP160100285
dc.relationhttp://purl.org/au-research/grants/arc/FT110100453
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage154
local.bibliographicCitation.lastpage167
local.identifier.doi10.1038/s41437-017-0029-y
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2020-11-23T11:47:38Z
local.identifier.scopusID2-s2.0-85037630085
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/3988..."Author accepted manuscript can be made open access on non-commercial institutional repository after 6 month embargo" from SHERPA/RoMEO site (as at 14.5.2021).
CollectionsANU Research Publications

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