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Author (up) Katvala, M.; Ronn, J.L.; Arnqvist, G. url  doi
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  Title Correlated evolution between male ejaculate allocation and female remating behaviour in seed beetles (Bruchidae) Type Journal Article
  Year 2008 Publication Journal of Evolutionary Biology Abbreviated Journal J Evol Biol  
  Volume 21 Issue 2 Pages 471-479  
  Keywords Animals; Beetles/anatomy & histology/genetics/*physiology; Ejaculation/*genetics; *Evolution; Female; Fertility/genetics; Genetic Variation; Male; Organ Size; Sexual Behavior, Animal/*physiology; Testis/anatomy & histology  
  Abstract Sperm competition theory suggests that female remating rate determines the selective regime that dictates the evolution of male ejaculate allocation. To test for correlated evolution between female remating behaviour and male ejaculate traits, we subjected detailed experimental data on female and male reproductive traits in seven-seed beetle species to phylogenetic comparative analyses. The evolution of a larger first ejaculate was positively correlated with the evolution of a more rapid decline in ejaculate size over successive matings. Further, as predicted by theory, an increase in female remating rate correlated with the evolution of larger male testes but smaller ejaculates. However, an increase in female remating was associated with the evolution of a less even allocation of ejaculate resources over successive matings, contrary to classic sperm competition theory. We failed to find any evidence for coevolution between the pattern of male ejaculate allocation and variation in female quality and we conclude that some patterns of correlated evolution are congruent with current theory, whereas some are not. We suggest that this may reflect the fact that much sperm competition theory does not fully incorporate other factors that may affect the evolution of male and female traits, such as trade-offs between ejaculate expenditure and other competing demands and the evolution of resource acquisition.  
  Address Evolutionary Biology Centre, Department of Animal Ecology, Uppsala University, Sweden  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1420-9101 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:18205777 Approved no  
  Call Number GGC @ mschluet @ Serial 23  
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