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Showing 1 to 13 of 13 for “"microevolution"”.
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Morphometric approaches to systematics and microevolution: Applications from paleozoic bryozoa
Documentation of microevolution through geologic time is a significant paleontologic contribution to evolutionary biology. Paleomicroevolutionary studies require accurate stratigraphic resolution over a large geographic area, through changing environments, over a sustained period of time, with an …
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Morphometric Approaches to Analysis of Microevolution: Morphologic Variation in Paleozoic Bryozoa
Temporal variation is recognized among stratigraphically separated populations. Colonies become more gracile through time, but populations are not ecotypes tracking favorable environmental conditions. Characters describing zooidal living chambers contribute more to the discrimination of populations …
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Quantitative Genetics of Life History Microevolution in the Cayo Santiago Rhesus Macaques (Macaca Mulatta)
… fertility and lifespan. This is an important microevolutionary trade-off constraining the evolution of these fitness components and predicted by the antagonistic pleiotropy theory of aging. Analogies between rhesus female and human patterns of resource manipulation to mitigate life history …
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The evolution of convergence, growth, and diet under an adaptive landscape framework
… variation within populations, the basis of microevolution. In microevolution, an adaptive landscape is used to visualize the relationship between phenotype and fitness, through a series of peaks and valleys. The adaptive landscape, as a concept suggests that there is some phenotypic optimum, …
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Behavioural, microhabitat, and phylogenetic dimensions of intrasexual contest competition in combatant monkey beetles (Scarabaeidae: Hopliini)
… sexual selection as a driver of evolution, from microevolution to speciation, has overwhelmingly been studied in the context of female choice, but there is evidence that male-male competition can also drive evolution. Recent reviews of the intrasexual competition literature have developed several …
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Carbon Catabolite Regulation of Yersinia pestis Pathogenesis
… by the cAMP receptor protein, CRP. The microevolution of Y. pestis biovar Orientalis is characterized by loss of glycerol fermentation resulting from dysfunction of glpD and ensured by impairment of the glpFKX operon. Through a mode of action presumably independent of CRP regulation, …
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Molecular epidemiology of West Nile virus in North America
… in recent years and support the hypothesis that microevolution of WNV will continue from year to year and as the distribution of the virus expands. In addition, these studies have identified a dominant genotype of North American WNV that has displaced all other known genotypes throughout North …
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Dialect formation in fragmented populations of the endangered North Island kokako (Callaeas wilsoni)
… population size, as the neutral model of song microevolution predicts. Smaller populations of kōkako, with reduced social stability under relaxed selection pressures, may resemble small colonizing groups undergoing founder effects and vocal drift leading to loose syntax, consistent with the …
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Trends in Eukaryote Body Size in an Ecological and Evolutionary Context
Body size is one of the most fundamental quantifiable traits of living or fossil organisms, and understanding it in various temporal and spatial contexts can offer key insights into the process of evolution. This volume examines body size of eukaryotes and its correlates in various temporal and …
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Epidemiología molecular en Escherichia coli procedente de fauna salvaje: resistencia antimicrobiana, virulencia y diversidad y diversidad genética
… rather than the occurrence of a parallel microevolution in the gut of wild animals.
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New hypotheses about the origin of Pseudomonas syringae crop pathogens
Pseudomonas syringae is a common foliar plant pathogenic bacterium that causes diseases on many crop plants. We hypothesized that today's highly virulent P. syringae crop pathogens with narrow host range might have evolved after the advent of agriculture from ancestral P. syringae strains with wide …
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ΑΝΘΡΩΠΟΛΟΓΙΚΗ ΕΡΕΥΝΑ ΤΗΣ ΣΥΝΘΕΣΗΣ ΤΟΥ ΠΛΗΘΥΣΜΟΥ ΤΗΣ ΝΟΤΙΟΥ ΕΛΛΑΔΟΣ ΣΤΗΝ ΕΠΟΧΗ ΤΟΥ ΧΑΛΚΟΥ
THIS RESEARCH AIMED TO EXAMINE CERTAIN ARCHAEOLOGICAL PROBLEM SUCH AS: A) WHETHER AN ANTHROPOLOGICAL DIFFERENCE BETWEEN MYCENEANS-MINOANS DOES EXIST, B) WHETHER THERE IS A PROOF OR NOT OF THE INVASION OF OTHER TRIBES (NORDIC) IN THE TRADITIONAL ERA BETWEEN MIDDLE BRONZE AGE AND LATE BRONZE AGE, AND …