...Chloe Peneaux; Gabriel E. Machovsky-Capuska; John A. Endler; Andrea S. Griffin ABSTRACT Producing colored signals often requires consuming dietary carotenoid pigments. Evidence that food deprivation can reduce coloration, however, raises the question of whether other dietary nutrients contribute...

... have one each. It is interesting to consider how mixing a small number of coloration patterns is effective for camouflage, and why the demands of this task may lead to differences between species. * Author for correspondence (e-mail: [email protected]) 12 6 2006 © The Company...

... for representatives of two ground squirrel species, Spermophilus lateralis and Spermophilus saturatus , that contrast in coloration. Radiative heat gain was quantified as the decrease in metabolic heat production caused by the animal’s exposure to simulated solar radiation. Changes in convective heat loss were...

...Glenn E. Walsberg; Catherine A. Schmidt ABSTRACT Physical theory predicts that animals with fur or feather coats can adjust solar heat gain independently of surface coloration or environmental factors by altering coat structure or hair optical properties. This hypothesis is tested by examining...