Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Mate Choice in the Wood Frog, Rana sylvatica

Keith A. Berven
Evolution
Vol. 35, No. 4 (Jul., 1981), pp. 707-722
DOI: 10.2307/2408242
Stable URL: http://www.jstor.org/stable/2408242
Page Count: 16
  • Read Online (Free)
  • Download ($4.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Mate Choice in the Wood Frog, Rana sylvatica
Preview not available

Abstract

The variation in mating success of male wood frogs, Rana sylvatica, was studied in natural populations and laboratory mate-choice experiments using males of varying ages, body sizes and geographic origins. The results of both laboratory and field experiments suggest that male-male competition was responsible for the greater mating success of the larger males. Older males did not have greater mating success when size was controlled. Males showed a strong preference for larger females and ignored very small females. Most matings were not significantly assortative. In those rare cases where assortative mating was observed, it resulted from male competition, male choice, and the relative abundance of each sex as opposed to female choice of a preferred body size. Substantial among-pond and within-year variation in sex ratios and age composition of breeding populations was observed. Such variation may have been important in determining the pattern of mate choice observed and the variation in male reproductive success.

Page Thumbnails

  • Thumbnail: Page 
707
    707
  • Thumbnail: Page 
708
    708
  • Thumbnail: Page 
709
    709
  • Thumbnail: Page 
710
    710
  • Thumbnail: Page 
711
    711
  • Thumbnail: Page 
712
    712
  • Thumbnail: Page 
713
    713
  • Thumbnail: Page 
714
    714
  • Thumbnail: Page 
715
    715
  • Thumbnail: Page 
716
    716
  • Thumbnail: Page 
717
    717
  • Thumbnail: Page 
718
    718
  • Thumbnail: Page 
719
    719
  • Thumbnail: Page 
720
    720
  • Thumbnail: Page 
721
    721
  • Thumbnail: Page 
722
    722