Global ETD Search
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Showing 1 to 15 of 15 for “"Local adaptations"”.
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Bull trout (Salvelinus confluentus) population structure and extent of hybridization with brook trout (S. fontinalis) across Alberta's Eastern Slopes
… this analysis, indicating that a high amount of local diversity contributes to bull trout exhibiting a hierarchical metapopulation structure. These findings suggest that management actions should be implemented at a local scale to protect the local adaptations and genetic integrity of bull trout.
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Variation in shoaling behavior in lake Mývatn threespine stickleback in relation to temperature and origin
… populations has the potential to facilitate local adaptation and population divergence. The threespine stickleback (Gasterosteus aculeatus) in Lake Mývatn is an ideal candidate to study such local adaptations. Threespine stickleback diverge in their morphology and physiology across the lake, …
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Living on the Edge: Conservation of Fish Species at Risk in Canada
… oculatus ) were investigated for the presence of local adaptations. Adaptations in the form of delayed age at maturity and lower body condition were seen in the Rondeau Bay population of Spotted Gar. Differences in habitat selection and offshore distance were also seen in the Rondeau Bay …
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Signatures of selection in the red fox (Vulpes vulpes) in Europe using genotype-by-sequencing
… evolutionary history and identify patterns of local adaptations. Abiotic and biotic factors can cause selective pressures that may be seen in the red fox’s genome. Additionally, debate continues to whether red foxes remained in isolated refugia or existed as a continuous population in southern …
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Life History Divergence & Tidal Salt Marsh Adaptations of the Coastal Plain Swamp Sparrow
Adaptation to local environments via natural selection is a powerful mechanism for population divergence and likely one of the primary causes of speciation. To understand how specific habitats shape local adaptation, it is helpful to study closely-related populations from widely differing …
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Evidence for Local Adaptation in Birds
… within species are commonly assumed to represent local adaptations to different environments. In order for local adaptation to evolve by natural selection, three conditions must be met: (1) traits must vary geographically, (2) local variants of traits must provide a fitness advantage (increased …
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The herds shot round the world : native breeds and the British Empire, 1800-1900
… viability of their stock. Thus they reoriented local variability towards market standardization, transforming regional types of cattle and sheep into geographically transposable, bulky, and quick-fattening beasts suited for increasingly sophisticated economies and industrialized production. …
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Bayesian regional models of gold and copper alloys from pre-Hispanic Colombia
… environmental and cultural stimuli – with local adaptations not readily explained by dichotomous metal symbolism, or by the local availability of ore sources.
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Investigating the role of demography and selection in genome scale patterns of common and rare variant diversity in humans
… subprojects. Firstly, population structure and local adaptations in Southeast Asia were investigated using novel autosomal 730,000 SNP data from 146 individuals in the context of a larger worldwide panel of 1,825 humans. The Kankanaey Igorot from the highlands of the Philippine Mountain Province …
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Self-organising agent communities for autonomic computing
… separately in response to interactions in their local environments. The self-regulation of the whole system, in turn, becomes a product of local adaptations and interactions between system elements.<br/><br/>Although many researchers suggest the application of multi-agent systems that are …
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Plasticity, Intraspecific Variability and Local Adaptation to Climatic Extreme Events of Ecotypes/Provenances of Key Plant Species
… came into focus as potential substitutes for local provenances, as they might have developed local adaptations to climate conditions at their location of origin. Insights about the response of these provenances to changing averages and extreme event regimes are crucial for a reasonable use of …
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Population-Level Differences in Pinus monophylla Whole-Plant Seedling Strategies Under Varying Precipitation Pulses
… trait variation reflecting adaptation to local environments. Populations may vary in traits that regulate seedling growth and resource acquisition in response to resource pulse regimes, and some adaptations to historic conditions may become maladaptive under projected climate scenarios. …
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Thermal adaptation in butterflies: patterns, significance and mechanisms
… a range of ambient temperatures demonstrate local adaptations to regional climates. Furthermore, by rearing butterflies in both studies at different temperatures, environmentally-induced plasticity is demonstrated to be as important as genetic factors in mediating adaptive responses. …
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Influence of Diet and Environmental Variation on Physiological Responses of Juvenile Pallid Sturgeon (Scaphirhynchus albus)
… short-term recovery effort for the prevention of local extirpations. Thus, producing healthy pallid sturgeon, maximizing genetic diversity, and preserving locally adapted populations are critical components of the pallid sturgeon propagation program. In this study, I compared feeding, growth and …
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Paleogenomics in the Americas: demography, adaptations, and resilience
… span a period of 10,000 years and broach both local and continental demographic histories. In doing so, a comprehensive genetic picture of an indigenous population, with a history characteristic of other native groups, emerges so as to explain nuanced migration patterns, the historical …