Comparative life history features of the western spotted frog, <i>Rana pretiosa</i>, from low- and high-elevation populations

• Lawrence E. Licht

抄録

Comparisons are made of life history features of the western spotted frog, Rana pretiosa pretiosa, living at 70 m in southwestern British Columbia, and 2600 m in Yellowstone Park, Wyoming.Lowland tadpoles remain longer as larvae and transform at twice the body size as highland tadpoles.Growth rates of juveniles and adults are rapid in the lowland population and the same amount of growth achieved by them in 2–3 years takes 8–10 years for highland frogs.Body size at sexual maturity is the same for frogs from both populations, but B.C. frogs breed at half the age of Wyoming frogs. Female fecundity, the number of eggs at spawning, is the same, but lowland females breed annually, while high-elevation females breed only every 2 or 3 years.Various explanations are put forth to account for observed differences.

収録刊行物

• Canadian Journal of Zoology

  Canadian Journal of Zoology 53 (9), 1254-1257, 1975-09-01

  Canadian Science Publishing

キーワード

• Animal Science and Zoology
• Ecology, Evolution, Behavior and Systematics

詳細情報

• CRID: 1363951794706914432
• NII論文ID: 30039636912
• DOI: 10.1139/z75-150
• ISSN: 14803283
• ISSN: 00084301
• Web Site: http://www.nrcresearchpress.com/doi/pdf/10.1139/z75-150
• データソース種別:
  • Crossref
  • CiNii Articles