Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes

Polyandrous mating is extremely common, yet for many species the evolutionary significance is not fully resolved. In order to understand the evolution of mating systems, it is crucial that we investigate the adaptive consequences across many facets of reproduction. We performed experimental evolutio...

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Autores: Demont, Marco, Grazer, Vera M., Michalczyk, Lukasz, Millard, Ana L., Sbilordo, Sonja H., Emerson, Brent C., Gage, Matthew J. G., Martin, Oliver Y.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/180032
Acesso em linha:http://hdl.handle.net/10261/180032
Access Level:acceso abierto
Palavra-chave:Tribolium castaneum
Multiple mating
Monogamy
Mating system
Reproductive success
Experimental evolution
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spelling Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both SexesDemont, MarcoGrazer, Vera M.Michalczyk, LukaszMillard, Ana L.Sbilordo, Sonja H.Emerson, Brent C.Gage, Matthew J. G.Martin, Oliver Y.Tribolium castaneumMultiple matingMonogamyMating systemReproductive successExperimental evolutionPolyandrous mating is extremely common, yet for many species the evolutionary significance is not fully resolved. In order to understand the evolution of mating systems, it is crucial that we investigate the adaptive consequences across many facets of reproduction. We performed experimental evolution with the naturally polygamous flour beetle Tribolium castaneum subjected to either polyandry or enforced monogamy, creating contrasting selection regimes associated with the presence or absence of sexual selection. After 36 generations, we investigated male and female adaptations by mating beetles with an unselected tester strain to exclude potential effects of male–female coevolution. Reproductive success of focal monogamous and polyandrous beetles from each sex was assessed in separate single male and multiple male experiments emulating the different selection backgrounds. Males and females from the polyandrous regime had more offspring in the experiments with multiple males present than monogamous counterparts. However, in single male experiments, neither females nor males differed between selection regimes. Subsequent mating trials with multiple males suggested that adaptations to polyandry in both sexes provide benefits when choice and competition were allowed to take place. Polyandrous females delayed the first copulation when given a choice of males and polyandrous males were quicker to achieve copulation when facing competition. In conclusion, we show that the expected benefits of evolutionary adaptation to polyandry in T. castaneum depended on the availability of multiple mates. This context-dependent effect, which concerned both sexes, highlights the importance of realistic competition and choice experiments.We thank the Swiss National Science Foundation (Ambizione Grants PZ00P3_121777 and PZ00P3-137514 and standard research Grant 31003A_125144/1 to OYM), ETH Zurich, NERC and the University of East Anglia for support.Peer reviewedPeer ReviewedSpringer NatureSwiss National Science FoundationETH ZurichNatural Environment Research Council (UK)University of East AngliaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920142019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/180032reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1007/s11692-013-9246-3Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1800322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
title Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
spellingShingle Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
Demont, Marco
Tribolium castaneum
Multiple mating
Monogamy
Mating system
Reproductive success
Experimental evolution
title_short Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
title_full Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
title_fullStr Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
title_full_unstemmed Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
title_sort Experimental Removal of Sexual Selection Reveals Adaptations to Polyandry in Both Sexes
dc.creator.none.fl_str_mv Demont, Marco
Grazer, Vera M.
Michalczyk, Lukasz
Millard, Ana L.
Sbilordo, Sonja H.
Emerson, Brent C.
Gage, Matthew J. G.
Martin, Oliver Y.
author Demont, Marco
author_facet Demont, Marco
Grazer, Vera M.
Michalczyk, Lukasz
Millard, Ana L.
Sbilordo, Sonja H.
Emerson, Brent C.
Gage, Matthew J. G.
Martin, Oliver Y.
author_role author
author2 Grazer, Vera M.
Michalczyk, Lukasz
Millard, Ana L.
Sbilordo, Sonja H.
Emerson, Brent C.
Gage, Matthew J. G.
Martin, Oliver Y.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Swiss National Science Foundation
ETH Zurich
Natural Environment Research Council (UK)
University of East Anglia
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Tribolium castaneum
Multiple mating
Monogamy
Mating system
Reproductive success
Experimental evolution
topic Tribolium castaneum
Multiple mating
Monogamy
Mating system
Reproductive success
Experimental evolution
description Polyandrous mating is extremely common, yet for many species the evolutionary significance is not fully resolved. In order to understand the evolution of mating systems, it is crucial that we investigate the adaptive consequences across many facets of reproduction. We performed experimental evolution with the naturally polygamous flour beetle Tribolium castaneum subjected to either polyandry or enforced monogamy, creating contrasting selection regimes associated with the presence or absence of sexual selection. After 36 generations, we investigated male and female adaptations by mating beetles with an unselected tester strain to exclude potential effects of male–female coevolution. Reproductive success of focal monogamous and polyandrous beetles from each sex was assessed in separate single male and multiple male experiments emulating the different selection backgrounds. Males and females from the polyandrous regime had more offspring in the experiments with multiple males present than monogamous counterparts. However, in single male experiments, neither females nor males differed between selection regimes. Subsequent mating trials with multiple males suggested that adaptations to polyandry in both sexes provide benefits when choice and competition were allowed to take place. Polyandrous females delayed the first copulation when given a choice of males and polyandrous males were quicker to achieve copulation when facing competition. In conclusion, we show that the expected benefits of evolutionary adaptation to polyandry in T. castaneum depended on the availability of multiple mates. This context-dependent effect, which concerned both sexes, highlights the importance of realistic competition and choice experiments.
publishDate 2014
dc.date.none.fl_str_mv 2014
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/180032
url http://hdl.handle.net/10261/180032
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1007/s11692-013-9246-3
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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