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Assessing the evidence for latitudinal gradients in plant defence and herbivory
Summary 1. The idea that biotic interactions, including herbivory, predation and competition are more intense at lower latitudes is widely accepted and underpins several dominant theories on theExpand
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Protein content of diets dictates the daily energy intake of a free-ranging primate
An important goal in nutritional ecology is to understand what governs the diet selection of free-living animals. Relevant information is however scarce because of the considerable challenges ofExpand
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Desert tortoise (Gopherus agassizii) populations have experienced precipitous declines resulting from the cumulative impact of habitat loss, and human and disease-related mortality. Evaluation ofExpand
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Sudies on low metabolisable energy wheats for poultry using conventional and rapid assay procedures and the effects of processing
1. A significant proportion of wheat cultivars grown in New South Wales had low apparent metabolisable energy (AME) values (< 13.0 MJ/kg dry matter) for growing broilers when determined by theExpand
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Nutritional Ecology of Ateles chamek in lowland Bolivia: How Macronutrient Balancing Influences Food Choices
All free-living animals must make choices regarding which foods to eat, with the choices influencing their health and fitness. An important goal in nutritional ecology is therefore to understand whatExpand
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Egg Size and Annual Egg Production by Female Desert Tortoises (Gopherus agassizii): The Importance of Food Abundance, Body Size, and Date of Egg Shelling
We studied egg production in two Californian populations of desert tortoises, (Gopherus agassizii) in 1992 and 1993. One population inhabited the Desert Tortoise Research Natural Area (DTNA) in theExpand
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Antiherbivore Chemistry of Eucalyptus--Cues and Deterrents for Marsupial Folivores
Formylated phloroglucinol compounds (FPCs) are the single most important factor determining the amount of foliage that marsupial folivores eat from individual Eucalyptus trees. Folivores need toExpand
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The Detoxification Limitation Hypothesis: Where Did it Come From and Where is it Going?
The detoxification limitation hypothesis is firmly entrenched in the literature to explain various aspects of the interaction between herbivores and plant toxins. These include explanations for theExpand
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Can betaine partially replace or enhance the effect of methionine by improving broiler growth and carcase characteristics?
1. Growth rates and carcase characteristics were measured in male broiler chickens fed on a control diet deficient in methionine (c. 2·8 g/kg methionine) or a series of diets containing graded levelsExpand
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Effects of climatic variation on field metabolism and water relations of desert tortoises
Abstract We used the doubly labeled water method to measure the field metabolic rates (FMRs, in kJ kg−1 day−1) and water flux rates (WIRs, in ml H2O kg−1 day−1) of adult desert tortoises (GopherusExpand
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