Population biology of a selfish sex ratio distorting element in a booklouse (Psocodea: Liposcelis)

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dc.contributor.authorHodson, Christina N.
dc.contributor.authorPerlman, Steve
dc.date.accessioned2019-09-18T22:16:54Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractArthropods harbour a variety of selfish genetic elements that manipulate reproduction to be preferentially transmitted to future generations. A major ongoing question is to understand how these elements persist in nature. In this study, we examine the population dynamics of an unusual selfish sex ratio distorter in a recently discovered species of booklouse, Liposcelis sp. (Psocodea: Liposcelididae) to gain a better understanding of some of the factors that may affect the persistence of this element. Females that carry the selfish genetic element only ever produce daughters, although they are obligately sexual. These females also only transmit the maternal half of their genome. We performed a replicated population cage experiment, varying the initial frequency of females that harbour the selfish element, and following female frequencies for 20 months. The selfish genetic element persisted in all cages, often reaching very high (and thus severely female‐biased) frequencies. Surprisingly, we also found that females that carry the selfish genetic element had much lower fitness than their nondistorter counterparts, with lower lifetime fecundity, slower development and a shorter egg‐laying period. We suggest that differential fitness plays a role in the maintenance of the selfish genetic element in this species. We believe that the genetic system in this species, paternal genome elimination, which allows maternal control of offspring sex ratio, may also be important in the persistence of the selfish genetic element, highlighting the need to consider species with diverse ecologies and genetic systems when investigating the effects of sex ratio manipulators on host populations.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was supported by a Natural Sciences and Engineering Council of Canada Discovery Grant. We acknowledge support from the Integrated Microbial Biodiversity Program of the Canadian Institute for Advanced Research.en_US
dc.identifier.citationHodson, C.N. & Perlman, S.J. (2019). Population biology of a selfish sex ratio distorting element in a booklouse (Psocodea: Liposcelis). Journal of Evolutionary Biology, 32(8), 825-832. https://doi.org/10.1111/jeb.13484en_US
dc.identifier.urihttps://doi.org/10.1111/jeb.13484
dc.identifier.urihttp://hdl.handle.net/1828/11159
dc.language.isoenen_US
dc.publisherJournal of Evolutionary Biologyen_US
dc.subjectfeminization
dc.subjectgenetic conflict
dc.subjectpaternal genome elimination
dc.subjectpopulation dynamics
dc.subjectselfish genetic element
dc.subjectWolbachia
dc.subject.departmentDepartment of Biology
dc.titlePopulation biology of a selfish sex ratio distorting element in a booklouse (Psocodea: Liposcelis)en_US
dc.typePreprinten_US

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