Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Seasonal Changes in Home Ranges of the Giant Kangaroo Rat (Dipodomys ingens): A Study of Flexible Social Structure

Loni D. Cooper and Jan A. Randall
Journal of Mammalogy
Vol. 88, No. 4 (Aug., 2007), pp. 1000-1008
Stable URL: http://www.jstor.org/stable/4498746
Page Count: 9
  • Read Online (Free)
  • Download ($42.00)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Seasonal Changes in Home Ranges of the Giant Kangaroo Rat (Dipodomys ingens): A Study of Flexible Social Structure
Preview not available

Abstract

Knowledge of home-range sizes and the degree of spatial overlap between males and females can help elucidate mammalian mating systems and social organizations. To characterize the social system and mating strategies of an endangered species, the giant kangaroo rat (Dipodomys ingens), we compared home ranges of males and females during the breeding and nonbreeding seasons using radiotelemetry. Boundaries and sizes of home ranges varied seasonally for males, but not for females. During the nonbreeding season, both males and females remained in exclusive territories located in the core of each individual's home range. During the breeding season, home-range size of males increased significantly as mobility of males increased and home ranges expanded to overlap neighboring territories of females. Home ranges also were more uniformly distributed than in the nonbreeding season, and nearest neighbors were significantly more often opposite-sex individuals. Males likely increased home-range sizes to overlap with multiple females and to enhance their opportunities for mating, perhaps by becoming familiar with neighboring females and monitoring those females for signs of receptivity. Although home ranges of females remained similar in size throughout the year, females seemed able to adjust their home ranges in response to neighboring vacancies. We conclude that spacing of D. ingens is flexible in order to meet changing social and environmental conditions.

Page Thumbnails

  • Thumbnail: Page 
1000
    1000
  • Thumbnail: Page 
1001
    1001
  • Thumbnail: Page 
1002
    1002
  • Thumbnail: Page 
1003
    1003
  • Thumbnail: Page 
1004
    1004
  • Thumbnail: Page 
1005
    1005
  • Thumbnail: Page 
1006
    1006
  • Thumbnail: Page 
1007
    1007
  • Thumbnail: Page 
1008
    1008