Browsing Biology by Title
Now showing items 116-135 of 175
-
Lateral Gene Transfer between Bacteria and Trichoderma reesei
(East Carolina University, 2012)Lateral gene transfer (LGT) has played an important role in shaping the `tree of life'. It has promoted evolution by generating gene redundancies, which allow for more freedom in terms of allowed mutations in a genome, ... -
Life History Aspects of the Hickory Shad (Alosa Mediocris) in the Albemarle Sound/ Roanoke River Watershed, North Carolina
(East Carolina University, 1998-01)The hickory shad (Alosa mediocris), which supports commercial and recreational fisheries in the Roanoke River and Albemarle Sound, North Carolina, is an anadromous species closely related to the American shad (A. sapidissima). ... -
Local and Regional Aspects of Habitat Quality Jointly Affect the Biodiversity of Ephemeral Ponds
(East Carolina University, 2012)The biodiversity of local communities is likely affected by both local habitat quality and by the quality of the landscape surrounding the locality. In pond environments, habitat quality may be affected by the kind of leaf ... -
LOCALIZATION AND CHANGES OF NUCLEAR PROGESTERONE RECEPTORS IN ZEBRAFISH OOCYTES AND ADJACENT FOLLICULAR CELLS
(East Carolina University, 2010)The nuclear progesterone receptor (Pgr) is one of the major mediators for progestin signaling during oocyte ovulation in vertebrates. However, any roles Pgr may play in oocyte growth, and especially in the final oocyte ... -
Maturation, Fecundity, and Spawning Frequency of the Albemarle/Roanoke Striped Bass Stock
(East Carolina University, 2011)The principal striped bass, Morone saxatilis population in North Carolina, the Albemarle/Roanoke (A/R) stock has grown tremendously in size and age structure over the last twenty years necessitating an up-to-date maturity ... -
Microbial Carbon Assimilation within the Walls of Deep-sea Hydrothermal Vent Chimneys
(East Carolina University, 2011)Carbon is one of the most abundant elements on Earth stored in a multitude of reservoirs and constantly cycled through various processes occurring on our planet. Although it represents only a small percentage of the total ... -
MICROBIAL DIVERSITY AND BIOGEOGRAPHY IN A SERPENTINITE-HOSTED ECOSYSTEM
(East Carolina University, 2010)The goal of this project was to characterize the taxonomic and functional diversity and document biogeographic patterns of microbial communities in an ecosystem influenced by active serpentinization. Serpentinization is a ... -
Molecular and Cellular Biology Animations: Development and Impact on Student Learning
(East Carolina University, 2005)Educators often struggle when teaching cellular and molecular processes because typically they have only two-dimensional tools to teach something that plays out in four dimensions. Learning research has demonstrated that ... -
Molecular Epidemiology of MRSA Among Patients and Employees in a Surgical Intensive Care Unit
(East Carolina University, 2011)Methicillin-resistant Staphylococcus aureus (MRSA) is a pervasive drug resistant human pathogen and has become widespread in hospitals around the world. MRSA infections cause approximately 19,000 deaths among hospitalized ... -
Molecular phylogenetic evidence for a mimetic radiation in Peruvian poison frogs supports a Müllerian mimicry hypothesis.
(East Carolina University, 2001-12-07)Examples of Müllerian mimicry, in which resemblance between unpalatable species confers mutual benefit, are rare in vertebrates. Strong comparative evidence for mimicry is found when the colour and pattern of a single ... -
Multifunctional experimental assessment in a newly established Mediterranean restored marsh : marsh elevation, carbon accumulation and pollutant concentration reduction
(East Carolina University, 2014)The Delta of the Ebro River (Catalonia, Spain) is among the most important marsh areas in the Western Mediterranean Sea, highly valuable both economically and ecologically. Fluvial sediment reduction by dams in a relative ... -
Multiple Factors Influence the Strength of Intraguild Interactions
(East Carolina University, 2011)Species engaged in intraguild predation (IGP) not only compete for the same food resources but can also eat each other. In some cases, a predator species in a higher trophic position (i.e., a top predator) can eat a ... -
Natal Origin of Central Southern Management Area, North Carolina Striped Bass, Inferred from Otolith Microchemistry
(East Carolina University, 2013)Striped bass (Morone saxatilis) is an important commercial and game fish throughout North Carolina coastal waters. These fish have spawning populations present in all of the state's coastal rivers, however populations south ... -
PARSING POLYPHYLETIC PUERARIA : DELIMITING DISTINCT EVOLUTIONARY LINEAGES THROUGH PHYLOGENY
(East Carolina University, 2013)A taxon is defined as polyphyletic when it does not include the last common ancestor of all true members of the taxon, resulting in a number of subgroups not united by a common ancestor. Previous work has suggested Pueraria ... -
Patterns of Succession in Man-Made and Natural Wetlands
(East Carolina University, 1990-03)The response of estuarine benthos to disturbance was investigated to test the hypotheses that season, sediment, composition, and location significantly affect patterns of recolonization. The study was conducted in two ... -
Phylogenetics and Systematics of the Millipede genus Brachycybe Wood, 1864 (Platydesmida: Andrognathidae)
(East Carolina University, 2010)The genus Brachycybe Wood, 1864 (Platydesmida: Andrognathidae) belongs to an ancient millipede lineage that has persisted since the Miocene. The group displays a Holarctic distribution with species in the eastern Nearctic, ... -
Physiological and Phylogenetic Studies of the Biogeography of Alkaliphilic Heterotrophic Bacteria from Serpentinizing Habitats
(East Carolina University, 2014)Serpentinization occurs when ultramafic rocks containing the mineral olivine react with water to produce highly reducing conditions, which are commonly coincident with high concentrations of hydrogen. Hydrogen provides ... -
Physiological Studies of Alkaliphilic Anaerobic Organotrophs in a Serpentinizing Subsurface Habitat
(East Carolina University, 2014)Microbial habitats in serpentinizing ultramafic rocks represent one of the largest, yet least understood portions of the biosphere, with potentially major consequences for global biogeochemical cycles. Serpentinization is ... -
Pleistocene glacial refugia across the Appalachian Mountains and coastal plain in the millipede genus Narceus: Evidence from population genetic, phylogeographic, and paleoclimatic data
(East Carolina University, 2009-01-30)Background: Species that are widespread throughout historically glaciated and currently nonglaciated areas provide excellent opportunities to investigate the role of Pleistocene climatic change on the distribution of North ... -
Posttranslational modifications in the CP43 subunit of photosystem II
(East Carolina University, 2002-11-12)Photosystem II (PSII) catalyzes the light-driven oxidation of water and the reduction of plastoquinone; the oxidation of water occurs at a cluster of four manganese. The PSII CP43 subunit functions in light ...