Daphnia invest in sexual reproduction when its relative costs are reduced

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dc.contributor.author Gerber, Nina
dc.contributor.author Kokko, Hanna
dc.contributor.author Ebert, Dieter
dc.contributor.author Booksmythe, Isobel
dc.date.accessioned 2020-01-14T07:41:02Z
dc.date.available 2020-01-14T07:41:02Z
dc.date.issued 2018-01-31
dc.identifier.citation Gerber , N , Kokko , H , Ebert , D & Booksmythe , I 2018 , ' Daphnia invest in sexual reproduction when its relative costs are reduced ' , Proceedings of the Royal Society B. Biological Sciences , vol. 285 , no. 1871 , 20172176 . https://doi.org/10.1098/rspb.2017.2176
dc.identifier.other PURE: 121887654
dc.identifier.other PURE UUID: d5cbb883-026e-424a-ad7d-58ff3229b680
dc.identifier.other WOS: 000423774700011
dc.identifier.other Scopus: 85040952264
dc.identifier.uri http://hdl.handle.net/10138/309466
dc.description.abstract The timing of sex in facultatively sexual organisms is critical to fitness, due to the differing demographic consequences of sexual versus asexual reproduction. In addition to the costs of sex itself, an association of sex with the production of dormant life stages also influences the optimal use of sex, especially in environments where resting eggs are essential to survive unfavourable conditions. Here we document population dynamics and the occurrence of sexual reproduction in natural populations of Daphnia magna across their growing season. The frequency of sexually reproducing females and males increased with population density and with decreasing asexual clutch sizes. The frequency of sexually reproducing females additionally increased as population growth rates decreased. Consistent with population dynamic models showing that the opportunity cost of sexual reproduction (foregoing contribution to current population growth) diminishes as populations approach carrying capacity, we found that investment in sexual reproduction was highest when asexual population growth was low or negative. Our results support the idea that the timing of sex is linked with periods when the relative cost of sex is reduced due to low potential asexual growth at high population densities. Thus, a combination of ecological and demographic factors affect the optimal timing of sexual reproduction, allowing D. magna to balance the necessity of sex against its costs. en
dc.format.extent 9
dc.language.iso eng
dc.relation.ispartof Proceedings of the Royal Society B. Biological Sciences
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject timing of sex
dc.subject Daphnia
dc.subject population density
dc.subject cost of sex
dc.subject LIFE-HISTORY
dc.subject PULEX
dc.subject EVOLUTION
dc.subject MAGNA
dc.subject INDUCTION
dc.subject ROTIFERS
dc.subject DENSITY
dc.subject 1181 Ecology, evolutionary biology
dc.title Daphnia invest in sexual reproduction when its relative costs are reduced en
dc.type Article
dc.contributor.organization Tvärminne Zoological Station
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1098/rspb.2017.2176
dc.relation.issn 0962-8452
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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