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Maximum life span differences among animal species exceed life span variation achieved by experimental manipulation by orders of magnitude. The differences in the characteristic maximum life span of… Expand
Corticosterone (B) may play a direct role in the promotion of feeding behavior under conditions of nutritional stress. However, effects of exogenous B and nutritional stress in passerines indicate a… Expand
The effects of dietary saturated fatty acids and polyunsaturated fatty acids (PUFA) of the n-3 and n-6 series on weight gain, body composition and substrate oxidation were investigated in broiler… Expand
The acyl composition of phospholipids from pectoral muscle of eight species of birds, ranging in size from the 13 g zebra finch to the 34 kg emu, were measured and combined with recent published… Expand
The Lapland longspur, Calcarius lapponicus, times its breeding season so that chicks hatch coincident with the brief period of food abundance in the high arctic. This synchronization requires that… Expand
Summary
1. The oxidative stress theory of ageing predicts that animals living longer will have less cumulative oxidative damage together with structural characteristics that make them more resistant… Expand
Eastern tent caterpillars (Malacosoma americanuum) are behavioral thermoregulations and achieve higher body temperatures than expected for ectotherms of similar body size. Construction of a communal… Expand
The house finch (Carpodacus mexicanus) is resident in tropical and subtropical regions as well as in localities having relatively severe winters. The extent of its winter acclimatization was assessed… Expand
The central bearded dragon (Pogona vitticeps) is a medium-sized lizard that is common in semiarid habitats in Australia and that potentially is at risk of fenitrothion exposure from use of the… Expand
Philosophical Transactions of the Royal Society B…
Long-distance migratory birds are often considered extreme athletes, possessing a range of traits that approach the physiological limits of vertebrate design. In addition, their movements must be… Expand