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Full-Text Articles in Animal Sciences
Elephants, Robert H.I. Dale
Elephants, Robert H.I. Dale
Scholarship and Professional Work - LAS
Book review for the following title:
Elephants. By Clive Spinage, Kent, UK: Harcourt Brace & Co., 1994, 319 pages. £27.45.
Reproductive Energetics Of Adult Male Yellow- Bellied Marmots (Marmota Flaviventris), Carmen M. Salsbury, K. B. Armitage
Reproductive Energetics Of Adult Male Yellow- Bellied Marmots (Marmota Flaviventris), Carmen M. Salsbury, K. B. Armitage
Scholarship and Professional Work - LAS
We examined the energy expenditure of adult male yellow-bellied marmots and its relationship to various female-defense characteristics critical to male reproductive success. Resting metabolic rates of males were estimated in the laboratory via oxygen-consumption analysis, and field metabolic rates were estimated using a doubly Labeled water technique. Male home-range size, number of females defended by males, dispersion of females in the habitat, and date into the active season were considered to be predictors of male energy expenditure in excess of maintenance costs (field metabolic rate minus resting metabolic rate). Energy expenditure was best explained by a defensibility index based on …