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Article: Genetic benefits of extreme sequential polyandry in a terrestrial-breeding frog

TitleGenetic benefits of extreme sequential polyandry in a terrestrial-breeding frog
Authors
KeywordsCompatible genes
external fertilization
good genes
polyandry
Issue Date2019
PublisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://lsvl.la.asu.edu/evolution/
Citation
Evolution, 2019, v. 73 n. 9, p. 1972-1985 How to Cite?
AbstractSequential polyandry may evolve as an insurance mechanism to reduce the risk that females choose mates that are genetically inferior (intrinsic male quality hypothesis) or genetically incompatible (genetic incompatibility hypothesis). The prevalence of such indirect benefits remains controversial, however, because studies estimating the contributions of additive and non-additive sources of genetic variation to offspring fitness have been limited to a small number of taxonomic groups. Here, we use artificial fertilisation techniques combined with a cross-classified breeding design (North Carolina Type II) to simultaneously test the ‘good genes hypothesis’ and the ‘genetic incompatibility hypothesis’ in the brown toadlet (Pseudophryne bibronii); a terrestrial breeding species with extreme sequential polyandry. Our results revealed no significant additive or non-additive genetic effects on fertilisation success. Moreover, they revealed no significant additive genetic effects, but highly significant non-additive genetic effects (sire by dam interaction effects), on hatching success and larval survival to initial and complete metamorphosis. Taken together, these results indicate that offspring viability is significantly influenced by the combination of parental genotypes, and that negative interactions between parental genetic elements manifest during embryonic and larval development. More broadly, our findings provide quantitative genetic evidence that insurance against genetic incompatibility favours the evolution and maintenance of sequential polyandry.
Persistent Identifierhttp://hdl.handle.net/10722/272494
ISSN
2023 Impact Factor: 3.1
2023 SCImago Journal Rankings: 1.235
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorByrne, PG-
dc.contributor.authorGaitan-Espitia, JD-
dc.contributor.authorSilla, AJ-
dc.date.accessioned2019-07-20T10:43:23Z-
dc.date.available2019-07-20T10:43:23Z-
dc.date.issued2019-
dc.identifier.citationEvolution, 2019, v. 73 n. 9, p. 1972-1985-
dc.identifier.issn0014-3820-
dc.identifier.urihttp://hdl.handle.net/10722/272494-
dc.description.abstractSequential polyandry may evolve as an insurance mechanism to reduce the risk that females choose mates that are genetically inferior (intrinsic male quality hypothesis) or genetically incompatible (genetic incompatibility hypothesis). The prevalence of such indirect benefits remains controversial, however, because studies estimating the contributions of additive and non-additive sources of genetic variation to offspring fitness have been limited to a small number of taxonomic groups. Here, we use artificial fertilisation techniques combined with a cross-classified breeding design (North Carolina Type II) to simultaneously test the ‘good genes hypothesis’ and the ‘genetic incompatibility hypothesis’ in the brown toadlet (Pseudophryne bibronii); a terrestrial breeding species with extreme sequential polyandry. Our results revealed no significant additive or non-additive genetic effects on fertilisation success. Moreover, they revealed no significant additive genetic effects, but highly significant non-additive genetic effects (sire by dam interaction effects), on hatching success and larval survival to initial and complete metamorphosis. Taken together, these results indicate that offspring viability is significantly influenced by the combination of parental genotypes, and that negative interactions between parental genetic elements manifest during embryonic and larval development. More broadly, our findings provide quantitative genetic evidence that insurance against genetic incompatibility favours the evolution and maintenance of sequential polyandry.-
dc.languageeng-
dc.publisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://lsvl.la.asu.edu/evolution/-
dc.relation.ispartofEvolution-
dc.rightsThis is the peer reviewed version of the following article: Evolution, 2019, v. 73 n. 9, p. 1972-1985, which has been published in final form at https://doi.org/10.1111/evo.13823. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectCompatible genes-
dc.subjectexternal fertilization-
dc.subjectgood genes-
dc.subjectpolyandry-
dc.titleGenetic benefits of extreme sequential polyandry in a terrestrial-breeding frog-
dc.typeArticle-
dc.identifier.emailGaitan-Espitia, JD: jdgaitan@hku.hk-
dc.identifier.authorityGaitan-Espitia, JD=rp02384-
dc.description.naturepostprint-
dc.identifier.doi10.1111/evo.13823-
dc.identifier.pmid31411350-
dc.identifier.scopuseid_2-s2.0-85071769139-
dc.identifier.hkuros299121-
dc.identifier.volume73-
dc.identifier.issue9-
dc.identifier.spage1972-
dc.identifier.epage1985-
dc.identifier.isiWOS:000486096000020-
dc.publisher.placeUnited States-
dc.identifier.issnl0014-3820-

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