Paternal effects correlate with female reproductive stimulation in the polyandrous ladybird Cheilomenes sexmaculata

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Show simple item record Mirhosseini, M. A. Michaud, J. P. Jalali, M. A. Ziaaddini, M. 2014-10-01T19:41:24Z 2014-10-01T19:41:24Z 2014-10-01
dc.description.abstract Components of male seminal fluids are known to stimulate fecundity and fertility in females of numerous insect species and paternal effects on offspring phenotype are also known, but no studies have yet demonstrated links between male effects on female reproduction and those on progeny phenotype. In separate laboratory experiments employing 10-day-old virgin females of Cheilomenes sexmaculata (F.), we varied male age and mating history to manipulate levels of male allomones and found that the magnitude of paternal effects on progeny phenotype was correlated with stimulation of female reproduction. Older virgin males remained in copula longer than younger ones, induced higher levels of female fecundity, and sired progeny that developed faster to yield heavier adults. When male age was held constant (13 days), egg fertility declined as a function of previous male copulations, progeny developmental times increased, and the adult weight of daughters declined. These results suggest that male epigenetic effects on progeny phenotype act in concert with female reproductive stimulation; both categories of effects increased as a consequence of male celibacy (factor accumulation), and diminished as a function of previous matings (factor depletion). Male factors that influence female reproduction are implicated in sexual conflict and parental effects may extend this conflict to offspring phenotype. Whereas mothers control the timing of oviposition events and can use maternal effects to tailor progeny phenotypes to prevailing or anticipated conditions, fathers cannot. Since females remate and dilute paternity in polyandrous systems, paternal fitness will be increased by linking paternal effects to female fecundity stimulation, so that more benefits accrue to the male's own progeny. en_US
dc.language.iso en_US en_US
dc.relation.uri en_US
dc.rights © Cambridge University Press 2014 en_US
dc.subject Development en_US
dc.subject Fecundity en_US
dc.subject Fertility en_US
dc.subject Sexual conflict en_US
dc.subject Cheilomenes sexmaculata en_US
dc.title Paternal effects correlate with female reproductive stimulation in the polyandrous ladybird Cheilomenes sexmaculata en_US
dc.type Article (publisher version) en_US 2014 en_US
dc.citation.doi doi:10.1017/S0007485314000194 en_US
dc.citation.epage 485 en_US
dc.citation.issue 4 en_US
dc.citation.jtitle Bulletin of Entomological Research en_US
dc.citation.spage 480 en_US
dc.citation.volume 104 en_US
dc.contributor.authoreid jpmi en_US

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