By Marshall D. McCue (auth.), Marshall D. McCue (eds.)
All animals face the potential for meals obstacle and finally starvation-induced mortality. This e-book summarizes state-of-the-art of hunger biology from the ecological motives of nutrition challenge to the physiological and evolutionary results of lengthy fasting. it's written for an viewers with an knowing of normal rules in animal body structure, but deals a degree of research and interpretation that would have interaction professional scientists. each one bankruptcy is written via energetic researchers within the box of comparative body structure and attracts at the fundamental literature of hunger either in nature and the laboratory. The chapters are equipped between extensive taxonomic different types, equivalent to protists, arthropods, fishes, reptiles, birds, and flying, aquatic, and terrestrial mammals together with people; fairly well-studied animal types, e.g. endotherms are additional prepared via experimental techniques, comparable to analyses of blood metabolites, sturdy isotopes, thermobiology, and modeling of physique composition.
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Additional resources for Comparative Physiology of Fasting, Starvation, and Food Limitation
1996; Djawdan et al. 1997; Harshman et al. 1999; Schwasinger-Schmidt et al. 2012). Lipid contents are generally much higher than in natural populations, suggesting that lipid storage has an evolutionary cost. Carbohydrates have received far less attention than lipids as energy stores, but also increase under starvation selection (Djawdan et al. 1997). Thus, energy storage, particularly in the form of lipids, is a consistent marker for starvation resistance. The relationship between metabolic rates and starvation resistance is murkier.
Over 3 days, the larva increases in mass by approximately 200-fold (Church and Robertson 1966). Soon thereafter it enters a 15–24 h wandering phase, during which it ceases feeding, leaves the media, and searches for a pupation site. The larva selects a spot, secretes a glue protein that adheres the animal to the substrate, and undergoes metamorphosis. Approximately 4 days later, an adult fly emerges from the pupal case. The adult feeds and allocates resources between somatic maintenance and reproduction.
2006) found that starvation-selected females actually tended to have higher metabolic rates than controls in the absence of food. No differences were seen when food was present, but metabolic rates are consistently lower when flies are starved than when they are fed (Djawdan et al. 1997; Baldal et al. 2006). 4 Drosophila as a Model for Starvation: Evolution, Physiology, and Genetics 41 Harshman and Schmid (1998) also found no relationship between metabolic rates and starvation resistance. More recently, Schwasinger-Schmidt et al.
Comparative Physiology of Fasting, Starvation, and Food Limitation by Marshall D. McCue (auth.), Marshall D. McCue (eds.)