Gerber, Nina

[["dc.bibliographiccitation.firstpage","629"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Ecology Letters"],["dc.bibliographiccitation.lastpage","637"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Booksmythe, Isobel"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Ebert, Dieter"],["dc.contributor.author","Kokko, Hanna"],["dc.contributor.editor","Becks, Lutz"],["dc.date.accessioned","2022-06-08T08:00:27Z"],["dc.date.available","2022-06-08T08:00:27Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1111/ele.12929"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/111083"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.issn","1461-023X"],["dc.title","Daphnia females adjust sex allocation in response to current sex ratio and density"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","20172176"],["dc.bibliographiccitation.issue","1871"],["dc.bibliographiccitation.journal","Proceedings of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.volume","285"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Kokko, Hanna"],["dc.contributor.author","Ebert, Dieter"],["dc.contributor.author","Booksmythe, Isobel"],["dc.date.accessioned","2022-06-08T07:59:13Z"],["dc.date.available","2022-06-08T07:59:13Z"],["dc.date.issued","2018"],["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."],["dc.description.sponsorship"," Academy of Finland http://dx.doi.org/10.13039/501100002341"],["dc.identifier.doi","10.1098/rspb.2017.2176"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110675"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1471-2954"],["dc.relation.issn","0962-8452"],["dc.rights.uri","https://royalsociety.org/journals/ethics-policies/data-sharing-mining/"],["dc.title","Daphnia invest in sexual reproduction when its relative costs are reduced"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","20170424"],["dc.bibliographiccitation.issue","1757"],["dc.bibliographiccitation.journal","Philosophical Transactions of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.volume","373"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Kokko, Hanna"],["dc.date.accessioned","2022-06-08T07:59:13Z"],["dc.date.available","2022-06-08T07:59:13Z"],["dc.date.issued","2018"],["dc.description.abstract","Natural populations often experience environments that vary across space and over time, leading to spatio-temporal variation of the fitness of a genotype. If local conditions are poor, organisms can disperse in space (physical movement) or time (dormancy, diapause). Facultatively sexual organisms can switch between asexual and sexual reproduction, and thus have a third option available to deal with maladaptedness: they can engage in sexual reproduction in unfavourable conditions (an ‘abandon-ship’ response). Sexual reproduction in facultatively sexual organisms is often coupled with dispersal and/or dormancy, while bet-hedging theory at first sight predicts sex, dispersal and dormancy to covary negatively, as they represent different escape mechanisms that could substitute for each other. Here we briefly review the observed links between sex, dormancy and dispersal, and model the expected covariation patterns of dispersal, dormancy and the reproductive mode in the context of local adaptation to spatio-temporally fluctuating environments. The correlations between sex, dormancy and dispersal evolve differently within species versus across species. Various risk-spreading strategies are not completely interchangeable, as each has dynamic consequences that can feed back into the profitability of others. Our results shed light on the discrepancy between previous theoretical predictions on covarying risk-spreading traits and help explain why sex often associates with other means of escaping unfavourable situations. This article is part of the theme issue ‘Linking local adaptation with the evolution of sex differences’."],["dc.description.sponsorship"," Academy of Finland http://dx.doi.org/10.13039/501100002341"],["dc.identifier.doi","10.1098/rstb.2017.0424"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110676"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1471-2970"],["dc.relation.issn","0962-8436"],["dc.rights.uri","https://royalsociety.org/journals/ethics-policies/data-sharing-mining/"],["dc.title","Abandoning the ship using sex, dispersal or dormancy: multiple escape routes from challenging conditions"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Frontiers in Ecology and Evolution"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Auclair, Yannick"],["dc.contributor.author","König, Barbara"],["dc.contributor.author","Lindholm, Anna K."],["dc.date.accessioned","2021-04-14T08:28:00Z"],["dc.date.available","2021-04-14T08:28:00Z"],["dc.date.issued","2021"],["dc.description.abstract","In mammals, reproduction is influenced by sexual competition, temperature and food availability and these factors might be crucial already during early life. Favorable early life environment and high maternal investment are expected to improve survival and reproduction. For example, in mammals, maternal investment via lactation predicts offspring growth. As body mass is often associated with fitness consequences, females have the potential to influence offspring fitness through their level of investment, which might interact with effects of population density and temperature. Here, we investigate the relationship between house mouse (Mus musculus domesticus) pup body mass at day 13 (used as approximation for weaning mass) and individual reproductive parameters, as well as longevity, under natural variation in population density and temperature (as approximation for season). Further, we assessed the extent to which mothers influence the body mass of their offspring until weaning. To do so, we analyzed life data of 384 house mice from a free-living wild commensal population that was not food limited. The mother’s contribution accounted for 49% of the variance in pup body mass. Further, we found a complex effect of population density, temperature and maternal investment on life-history traits related to fitness: shorter longevity with increasing pup body mass at day 13, delayed first reproduction of heavier pups when raised at warmer temperatures, and increased lifetime reproductive success for heavier pups at high densities. Our study shows that the effects of maternal investment are not independent of the effects of the environment. It thus highlights the importance of considering ecological conditions in combination with maternal effects to unravel the complexity of pup body mass on fitness measures."],["dc.identifier.doi","10.3389/fevo.2020.602359"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82474"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","2296-701X"],["dc.relation.orgunit","Abteilung Wildtierwissenschaften"],["dc.rights","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Population Density and Temperature Influence the Return on Maternal Investment in Wild House Mice"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","155"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The American Naturalist"],["dc.bibliographiccitation.lastpage","170"],["dc.bibliographiccitation.volume","192"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Booksmythe, Isobel"],["dc.contributor.author","Kokko, Hanna"],["dc.date.accessioned","2022-06-08T07:58:57Z"],["dc.date.available","2022-06-08T07:58:57Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1086/697727"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110581"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1537-5323"],["dc.relation.issn","0003-0147"],["dc.title","Sex Allocation Theory for Facultatively Sexual Organisms Inhabiting Seasonal Environments: The Importance of Bet Hedging"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Behavioral Ecology and Sociobiology"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Fischer, Stefan"],["dc.contributor.author","Oberhummer, Evelyne"],["dc.contributor.author","Cunha-Saraiva, Filipa"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Taborsky, Barbara"],["dc.date.accessioned","2022-06-08T07:59:24Z"],["dc.date.available","2022-06-08T07:59:24Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s00265-017-2371-8"],["dc.identifier.pii","2371"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110735"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1432-0762"],["dc.relation.issn","0340-5443"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0"],["dc.title","Smell or vision? The use of different sensory modalities in predator discrimination"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","20161280"],["dc.bibliographiccitation.issue","1841"],["dc.bibliographiccitation.journal","Proceedings of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.volume","283"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Kokko, Hanna"],["dc.date.accessioned","2022-06-08T07:59:13Z"],["dc.date.available","2022-06-08T07:59:13Z"],["dc.date.issued","2016"],["dc.description.abstract","Theories for the evolution of sex rarely include facultatively sexual reproduction. Sexual harassment by males is an underappreciated factor: it should at first sight increase the relative advantage of asexual reproduction by increasing the cost of sex. However, if the same females can perform either sexual or asexual life cycles, then females trying to reproduce asexually may not escape harassment. If resisting male harassment is costly, it might be beneficial for a female to accept a mating and undertake a sexual life cycle rather than ‘insist’ on an asexual one. We investigate the effects of sexual harassment on the maintenance of sex under different population densities. Our model shows that resisting matings pays off at low population densities, which leads to the complete extinction of males, and thus to the evolution of completely asexual populations. Facultative sex persists in a narrow range of slightly higher densities. At high densities, selection favours giving up resisting male mating attempts and thus sexual reproduction takes over. These interactions between the outcomes of sexual conflict and population density suggest an explanation for the rarity of facultative sex and also patterns of geographical parthenogenesis, where marginal environments with potentially low densities are associated with asexuality."],["dc.description.sponsorship"," Academy of Finland http://dx.doi.org/10.13039/501100002341"],["dc.identifier.doi","10.1098/rspb.2016.1280"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110674"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1471-2954"],["dc.relation.issn","0962-8452"],["dc.rights.uri","https://royalsociety.org/journals/ethics-policies/data-sharing-mining/"],["dc.title","Sexual conflict and the evolution of asexuality at low population densities"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","20202327"],["dc.bibliographiccitation.issue","1939"],["dc.bibliographiccitation.journal","Proceedings of the Royal Society of London. Series B, Biological Sciences"],["dc.bibliographiccitation.volume","287"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Schweinfurth, Manon K."],["dc.contributor.author","Taborsky, Michael"],["dc.date.accessioned","2021-04-14T08:24:48Z"],["dc.date.available","2021-04-14T08:24:48Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1098/rspb.2020.2327"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81428"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1471-2954"],["dc.relation.issn","0962-8452"],["dc.relation.orgunit","Abteilung Wildtierwissenschaften"],["dc.title","The smell of cooperation: rats increase helpful behaviour when receiving odour cues of a conspecific performing a cooperative task"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Ecological Research"],["dc.contributor.author","Fedyń, Izabela"],["dc.contributor.author","Bojarska, Katarzyna"],["dc.contributor.author","Gerber, Nina"],["dc.contributor.author","Okarma, Henryk"],["dc.date.accessioned","2022-04-01T10:00:27Z"],["dc.date.available","2022-04-01T10:00:27Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1111/1440-1703.12301"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105433"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1440-1703"],["dc.relation.issn","0912-3814"],["dc.rights.uri","http://onlinelibrary.wiley.com/termsAndConditions#vor"],["dc.title","Blood trail of expansion? Long‐term patterns of livestock depredation by wolves in Poland"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]