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dc.contributor.authorRoss, Laura
dc.contributor.authorShuker, David Michael
dc.contributor.authorNormark, Benjamin B.
dc.contributor.authorPen, Ido
dc.identifier.citationRoss , L , Shuker , D M , Normark , B B & Pen , I 2012 , ' The role of endosymbionts in the evolution of haploid-male genetic systems in scale insects (Coccoidea) ' Ecology and Evolution , vol. 2 , no. 5 , pp. 1071-1081 .
dc.identifier.otherPURE: 45508223
dc.identifier.otherPURE UUID: 545a4e65-4846-434d-911c-4379fedf958b
dc.identifier.otherWOS: 000312447700019
dc.identifier.otherScopus: 84879387079
dc.description.abstractThere is an extraordinary diversity in genetic systems across species, but this variation remains poorly understood. In part, this is because the mechanisms responsible for transitions between systems are often unknown. A recent hypothesis has suggested that conflict between hosts and endosymbiotic microorganisms over transmission could drive the transition from diplodiploidy to systems with male haploidy (haplodiploidy, including arrhenotoky and paternal genome elimination [PGE]). Here, we present the first formal test of this idea with a comparative analysis across scale insects (Hemiptera: Coccoidea). Scale insects are renowned for their large variation in genetic systems, and multiple transitions between diplodiploidy and haplodiploidy have taken place within this group. Additionally, most species rely on endosymbiotic microorganisms to provide them with essential nutrients lacking in their diet. We show that species harboring endosymbionts are indeed more likely to have a genetic system with male haploidy, which supports the hypothesis that endosymbionts might have played a role in the transition to haplodiploidy. We also extend our analysis to consider the relationship between endosymbiont presence and transitions to parthenogenesis. Although in scale insects there is no such overall association, species harboring eukaryote endosymbionts were more likely to be parthenogenetic than those with bacterial symbionts. These results support the idea that intergenomic conflict can drive the evolution of novel genetic systems and affect host reproduction.
dc.relation.ispartofEcology and Evolutionen
dc.rights© 2012 The Authors. Published by Blackwell Publishing Ltd. This is an Open Access article under the terms of the Creative Commons Attribution Non Commercial License which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.en
dc.subjectBacterial symbiont cardiniumen
dc.subjectMealybugs hemipteraen
dc.subjectPhylogenetic congruenceen
dc.subjectMale killersen
dc.subjectGenomic conflicten
dc.subjectPaternal genome eliminationen
dc.subjectScale insectsen
dc.subjectQL Zoologyen
dc.subjectQH426 Geneticsen
dc.titleThe role of endosymbionts in the evolution of haploid-male genetic systems in scale insects (Coccoidea)en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews.Centre for Biological Diversityen
dc.description.statusPeer revieweden

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