... a ), locomotor behavior and energy costs in the deer mouse, a small mammal that routinely encounters a large range of temperatures in its natural habitat. We tested for individual consistency in running behavior and metabolic traits, and determined how locomotor costs vary with speed and T a . Because...

... these declines are probably not subjected to strong selection in natural populations. Age-related declines in thermogenic capacity may be even more important to deer mouse ecology. Previous calculations from lab studies( Chappell and Snyder, 1984 ; Chappell and Holsclaw, 1984 )and data on field metabolic...

... maniculatus ): physiology of beta-globin variants and alpha-globin recombinants. Evolution 42 , 681 –688. Chappell, M. A. and Snyder, L. R. G. ( 1984 ). Biochemical and physiological correlates of deer mouse alpha-chain hemoglobin polymorphisms. Proc. Natl. Acad. Sci. USA 81 , 5484 –5488...

... and that is transduced via neural pathways. * e-mail: adamsc@biochem.dental.upenn.edu 05 02 2001 23 04 2001 © 2001 by Company of Biologists 2001 body mass mechanical regulation food intake deer mouse Peromyscus maniculatus diet restriction The regulation of body mass...