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- W2184328220 abstract "Herbivory is rare in reptiles generally, and particularly so in lizards. My study seeks to explain why strict herbivory should evolve in lizards. Captive herbivorous reptiles raised on a high protein diet grow faster and reach sexual maturity more quickly than those fed a low protein diet. Given several disadvantages associated with eating plants, and the apparent advantages to herbivores that supplement their diets with animals, why should strict herbivory evolve in nature? I will test the hypothesis that switching from an herbivorous to a carnivorous diet, and back again to herbivory, is energetically costly for herbivorous lizards. This cost may be manifested as a decrease in digestive efficiency resulting from a concomitant disturbance of the gut endosymbiont community, which is responsible for fermenting plant fiber. If this hypothesis is supported, then the energy lost from the predicted decrease in digestive efficiency should be greater than the energy that would be gained from supplementing the diet with animals. My study imposes diet-switching treatments on desert iguanas (Dipsosaurus dorsalis) and compares their digestive efficiency and the community structure of their gut microbes before and after diet switches. I will determine whether significant changes in digestibility and endosymbiont community structure are associated with diet switches." @default.
- W2184328220 created "2016-06-24" @default.
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- W2184328220 date "2004-01-01" @default.
- W2184328220 modified "2023-09-26" @default.
- W2184328220 title "Testing the cost of diet switching as a mechanism for the evolution of strict herbivory in lizards" @default.
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- W2184328220 hasPublicationYear "2004" @default.
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