Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (160.0 KB bytes)

Title: Influence of anuran prey on the condition and distribution of Rana muscosa in the Sierra Nevada

Author: Pope, K.L.; Matthews, K.R.;

Date: 2002

Source: Herpetelogica 58:354-363

Publication Series: Miscellaneous Publication

Description: Mountain yellow-legged frogs (Rana muscosa) at high elevations of the Sierra Nevada must obtain enough food during summer to survive 7–9 winter months when their aquatic habitats are frozen and food is presumably unavailable. Adults of R. muscosa prey on a variety of organisms, including aquatic and terrestrial invertebrates and anuran larvae. To determine if anuran larvae influence the condition, distribution, and survival of adults of R. muscosa, we assessed body condition (variation from the expected mass for given length) and distribution of R. muscosa in relation to abundance and distribution of larval Hyla regilla, Bufo canorus, and Bufo boreas. Using three years of mark-recapture data, we found that abundance of larval H. regilla in a water body was positively correlated with the condition of R. muscosa. Moreover, R. muscosa had higher relative mass (Wr) values in areas with other anuran larvae than in areas with no other amphibian species. High Wr values significantly increased the probability of recapturing frogs in following years. Using surveys of over 1700 lakes and ponds in the John Muir Wilderness and Kings Canyon National Park, we also found that the presence of larval H. regilla or Bufo in a water body was a significant indicator of the presence of adults of R. muscosa after accounting for significant habitat and isolation variables. These findings taken together suggest that some adults of R. muscosa actively seek out water bodies with other anuran species during the critical summer months and that the anuran larvae provide a nutritious food source that increases the body condition and, therefore, survival of the frogs.

Keywords: anuran, Rana muscosa, Sierra Nevada

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Pope, K.L. and K.R. Matthews 2002. Influence of anuran prey on the condition and distribution of Rana muscosa in the Sierra Nevada. Herpetelogica 58:354-363

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.