Bean Beetle Home Page Home

Bean Beetle Literature Database for Ecology, Evolution, and Animal Behavior

Bean Beetle Home Page |  Bibliography Home |  Show All |  Simple Search |  Advanced Search
Quick Search:
1-1 of 1 record found matching your query:
toggle visibility Search & Display Options
Select All    Deselect All << 1 >>
List View
 | 
Citations
 | 
Details
   print
  Record Links
Author (up) Kaufmann, P.; Wolak, M.E.; Husby, A.; Immonen, E. doi  openurl
  Title Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance Type Journal Article
  Year 2021 Publication Nature ecology & evolution Abbreviated Journal Nat Ecol Evol  
  Volume Issue Pages  
  Keywords  
  Abstract Sexual dimorphism is ubiquitous in nature but its evolution is puzzling given that the mostly shared genome constrains independent evolution in the sexes. Sex differences should result from asymmetries between the sexes in selection or genetic variation but studies investigating both simultaneously are lacking. Here, we combine a quantitative genetic analysis of body size variation, partitioned into autosomal and sex chromosome contributions and ten generations of experimental evolution to dissect the evolution of sexual body size dimorphism in seed beetles (Callosobruchus maculatus) subjected to sexually antagonistic or sex-limited selection. Female additive genetic variance (VA) was primarily linked to autosomes, exhibiting a strong intersexual genetic correlation with males ([Formula: see text] = 0.926), while X- and Y-linked genes further contributed to the male VA and X-linked genes contributed to female dominance variance. Consistent with these estimates, sexual body size dimorphism did not evolve in response to female-limited selection but evolved by 30-50% under male-limited and sexually antagonistic selection. Remarkably, Y-linked variance alone could change dimorphism by 30%, despite the C. maculatus Y chromosome being small and heterochromatic. Our results demonstrate how the potential for sexual dimorphism to evolve depends on both its underlying genetic basis and the nature of sex-specific selection.  
  Address Evolutionary Biology, Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden. elina.immonen@ebc.uu.se  
  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 2397-334X ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BBCDN @ christopher.beck @ Serial 148  
Permanent link to this record
Select All    Deselect All << 1 >>
List View
 | 
Citations
 | 
Details
   print
toggle visibility
Save Citations:
Export Records:
Home Library Search  |  Show Record  |  Extract Citations
This website is supported by National Science Foundation Grants, DUE-0535903, DUE-0815135, DUE-0814373, DUE-1821533, and DUE-1821184 to Morehouse College and Emory University, Atlanta, Georgia, USA. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessary reflect the views of the National Science Foundation, Emory University, or Morehouse College. Copyright © by Lawrence S. Blumer and Christopher W. Beck, 2008-2014. All rights reserved. The content of this site may be freely used for non-profit educational purposes, with proper acknowledgement of the source. All other uses are prohibited without prior written permission from the copyright holders.