Energy Dynamics of Colorado Pikas

Authors

Donald R. Johnson
Marvin H. Maxwell

Document Type

Article

Journal/Book Title/Conference

Ecology

Volume

47

Issue

6

First Page

1059

Last Page

1061

Publication Date

1966

Abstract

Like other lagomorphs, pikas reingest fecal matter which is high in protein content and energy value (5.2 kcal/g). The plant food stored in haypiles is low in caloric content (4.5 kcal/g) but some populations utilize energy—rich aspen bark (5.2 kcal/g) during the winter and spring months. The daily energy intake of a non—gravid, non—lactating, adult pika (171 g) is estimated at 54.8 kcal of which 68% is assimilated. Food intake, and perhaps feces reingestion, is increased during pregnancy and lactation.

Recommended Citation

Johnson, Donald R., Maxwell, Marvin H. 1966. Energy Dynamics of Colorado Pikas. Ecology 47(6):1059-1061.