Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Nutritional ecology"”.
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Regional variation in the nutritional ecology of ruffed grouse
Three experiments with captive ruffed grouse (Bonasa umbellus) demonstrated that dietary metabolizable energy (ME) can be predicted from neutral detergent solubles, total phenols, and percent acorns of grouse diets. The weight of the fat attached to the gizzard was highly correlated with percent …
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The Role of Plant Chemical Defenses in The Nutritional Ecology of Voles
Although forage quality influences the individual performance, food preferences, habitat selection, and population density of microtine rodents (voles and lemmings), the impact of secondary plant compounds on forage quality is largely unknown. This thesis reports results of studies conducted to …
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Fruit chemical traits shape bat nutritional ecology: from basic science to applications
… 2-4) while applying insights from basic chemical ecology to inform forest regeneration strategies (Chapter 5). The studies were conducted in northeastern Costa Rica at La Selva Biological Station. Chapter Two examines the variability and associations between nutrients and secondary metabolites …
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Mono-Oxygenase Activity and Nutritional Ecology of Larvae of the Gypsy Moth, Lymantria Dispar
… differs on oak vs. pine foliage, quantitative nutritional indices were measured for 3rd instar larvae. Significant trends were evident: Efficiency of conversion of digested food is higher in oak vs. pine fed larvae, but pine feeders have higher relative consumption rates than do oak feeders. …
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Nutritional ecology of Agalma okeni and other siphonophores from the epipelagic western North Atlantic Ocean
The feeding and fishing behavior of siphonophores in their natural environment: was observed by SCUBA diving at 171 stations in warm-water areas of the Western North Atlantic Ocean. Calycophorae and Physonectae showed a two-phase cycle of fishing and swimming. The fishing posture of a siphonophore …
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Nutritional Ecology of the Carpenter Ant Camponotus pennsylvanicus (De Geer): Macronutrient Preference and Particle Consumption
The nutritional ecology of the black carpenter ant, Camponotus pennsylvanicus (De Geer) was investigated by examining macronutrient preference and particle consumption in foraging workers. The crops of foragers collected in the field were analyzed for macronutrient content at two-week intervals …
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Nutritional Ecology of White-Tailed Deer: Assessment of an Index to Diet Quality and a Repellent
… in digestive function also may bias this nutritional index. My objective was to compare sex-specific variation in the concentration of fecal nitrogen using male, non-lactating female, and lactating female white-tailed deer (Odocoileus virginianus) on control and restricted diets. During …
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Effects of Fire on the Nutritional Ecology of Selected Ungulates in the Southern Black Hills, South Dakota
… in the southern Black Hills. To ascertain the nutritional condition of white-tailed deer and mule deer (O. hemionus) and their response to fire, 5 adult white-tailed deer and 5 adult mule deer were collected in burned and unburned habitat, in February and August, 2002 and 2003. Collected deer …
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The ManhattAnt: Identification, natural history, and nutritional ecology of a recently introduced pest in New York City, Lasius emarginatus (Hymenoptera: Formicidae)
… expansion. In Chapter 2, I characterize the nutritional niche of<em> L. emarginatus</em> and determine whether they are exploiting human food resources in highly urban habitats.</p>
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Primate nutritional ecology: the role of food selection, energy intake, and nutrient balancing in Mexican black howler monkey (Alouatta pigra) foraging strategies
Studying primate nutritional ecology is critical for addressing questions related to individual and group-based decision making, feeding ecology, life history, and reproductive success. However, understanding food selection is a complex task, and it requires integrating information on physiology, …
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An assessment of the health status by non-specific stress indicators in early farming populations from central and southern Africa
… lifestyle had profound implications for nutritional ecology, health and behaviour of human populations. The goal of this project was to generate information about the health status and disease patterns of early farming populations from central and southern Africa. Skeletal material was …
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The gut microbiome of the western lowland gorilla (Gorilla gorilla gorilla): implications for overall ecology
… the basis of our knowledge of primate ecology and evolution. Nonetheless, gut bacteria, which play central roles in the physiological adaptability of mammals, have been usually overlooked in primate studies. Here, I use a combination of high throughput molecular approaches to study the …
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Multiple dimensions of floral rewards drive pollinator behavior and pollen movement
… pollinating insects. Most commonly these are nutritional rewards; either pollen (primarily protein and lipids) and/or nectar (primarily carbohydrates) in varying combinations and qualities. This reward strategy varies inter- and intraspecifically, but surprisingly little is known about how …
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Maternal Effort, Food Quality, and Cortisol Variation During Lactation in Propithecus coquereli in Northwestern Madagascar
… lactating females). Secondly, I evaluated the nutritional quality of foods consumed exclusively by lactating females (n=10). Lastly, I examined stress responses across sex and reproductive classes in earlier (weeks 1-12) versus later lactation (weeks 13-24) (n=10 lactating females, n=19 adult …