Dissertations / Theses on the topic 'Marine bacteria – Effect of water pollution on'
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Al-Rasheid, Khaled A. S. "The effect of heavy metals on the marine ciliate Euplotes mutabilis (Tuffrau, 1960)." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358875.
Full textLau, Ken Wan Keung. "The identification of novel marine bacteria, and the construction of single chain fragment variable antibodies for the control of a viral pathogen /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202006%20LAU.
Full textDegger, Natalie. "Disruption of steroidogenesis and reproduction in marine medaka (oryzias melastigma) upon water and dietary exposure to silver nanoparticles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/211562.
Full textKelly, Joann. "The effect of nutrient limitation on the growth and toxicity of the dinoflagellate Gyrodinium instriatum." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/kellyj/joannkelly.pdf.
Full textNaigaga, Irene. "Bioaccumulation and histopathology of copper in Oreochromis mossambicus." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1005077.
Full textYu, Pui-shan, and 余珮珊. "The potential for using biomonitoring in the Hong Kong marine environment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31253611.
Full textHayteas, David Lawrence. "A Semiquantitative Analysis of PCB and P,P-DDE Residues in Stranded Marine Mammals Using High Performance Liquid Chromatography." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/1395.
Full textHemming, Jon Michael. "Evaluation of the Use of the Bivalves Ischadium recurvum Rafinesque, 1820 and Corbicula fluminea Muller, 1774 as Biological Indicators of Relative Water Quality in Terms of Growth and Upper Temperature Tolerance." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc278827/.
Full textMostert, Bruce Petrus. "Responses of intertidal macroalgae and associated fauna to interactive processes acting over multiple spatial scales." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1013370.
Full textTsui, Man-leung, and 徐文亮. "Biological monitoring and its value in assessing the marine environment of Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B3125357X.
Full textKujawinski, Elizabeth B. "The effect of protozoan grazers on the cycling of polychlorinated biphenyls (PCBs) in marine systems." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/58521.
Full textIncludes bibliographical references (p. 207-219).
Processes affecting organic carbon distribution and composition can control the speciation of organic contaminants such as polychlorinated biphenyls (PCBs) and ultimately determine their residence time in a particular environment. In marine systems, the microbial loop influences organic carbon dynamics by recycling a significant fraction of dissolved and particulate organic matter. The goal of this thesis was to understand how these recycling processes affect chlorobiphenyl (CB) cycling in marine systems by monitoring CB dynamics among organic carbon pools represented by dissolved organic matter, bacterial prey and phagotrophic protozoan grazers. Initially, I studied the extent to which a protozoan grazer (Uronema sp.-10[micro]m ciliate) equilibrated with aqueous PCBs within 2-3 hours. Initial calculations predicted rapid equilibration via passive diffusion. Experimentally, no difference in equilibration time was noted between grazing and non-grazing protozoa, indicating that diffusion was the primary uptake pathway for these organisms. The results were extended to determine the transition size of an organism where the rates of diffusive and ingested uptake are equivalent (100-500[micro]m). Disassociation rate constants were estimated for complexes of CB congeners and dissolved organic carbon (DOC). CB-DOC complexes enhanced the diffusive uptake rate constant for Tenax resin and, by inference, protozoan grazers. In the second phase of this work, concentrations of surfactants, organic carbon and cells were monitored over time in protozoan cultures. The effects of bacterial growth substrate and protozoan species were examined. Surfactants increased during protozoan exponential growth while total DOC concentrations decreased. Production of
(cont.) surface-active material in ciliate cultures was significantly higher than in flagellate cultures, and all protozoan cultures were higher than the bacterial control. Common headspace vessels were then used to compare and contrast the affinity of protozoan and bacterial culture filtrates (<0.2[micro]m) for PCBs relative to a seawater control. Affinities were normalized to bulk DOC and surfactant concentrations to determine underlying relationships among these parameters. Values of equilibrium partition coefficients (K[oc]) ranged from 10⁴·⁶ in Vineyard Sound seawater to 10⁵·⁴ and 10⁵·⁵ in protist cultures, indicating that "grazer-enhanced" DOM was a better sorbent for PCBs than DOM in bacterial controls and Vineyard Sound seawater.
by Elizabeth Belle Kujawinski.
Ph.D.
De, Almeida Louise. "The effect of sewage effluent from De Beers marine diamond mining operations on the expression of cytochrome P450 (CYP1A) and vitellogenin (vtg)." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1009440.
Full textRiebel, Philippe N. "Acute effects of petroleum hydrocarbons on the arctic littoral mysid, mysis oculata (Fabricius)." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61781.
Full textPeters, Joseph Richard. "Pharmaceutical Contaminants as Stressors on Rocky Intertidal and Estuarine Organisms: a Case Study of Fluoxetine." PDXScholar, 2016. https://pdxscholar.library.pdx.edu/open_access_etds/2729.
Full textBrice, Caitlin E. "The Detection of Amazonian Manatees (Trichechus inunguis) Using Side-Scan Sonar and the Effect of Oil Activities on Their Habitats in Eastern Ecuador." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/8.
Full text"DNA strand breaks in crustaceans as an indicator of marine pollution." 2005. http://library.cuhk.edu.hk/record=b5892426.
Full textThesis (M.Phil.)--Chinese University of Hong Kong, 2005.
Includes bibliographical references (leaves 91-105).
Abstracts in English and Chinese.
Abstract --- p.i
Acknowledgements --- p.v
Contents --- p.vi
List of figures and tables --- p.ix
Chapter Chapter 1 --- Introduction
Chapter 1.1 --- Literature review --- p.1
Chapter 1.1.1 --- The effect of pollutants on the genetic materials of aquatic organisms --- p.1
Chapter 1.1.1.1 --- Response of individual to genotoxicants --- p.1
Chapter 1.1.1.2 --- Effects of genotoxicants on population structure --- p.3
Chapter 1.1.2 --- Application of genetic markers in monitoring water pollution --- p.3
Chapter 1.1.2.1 --- DNA adduct --- p.4
Chapter 1.1.2.2 --- Sister chromatid exchange (SCE) test --- p.5
Chapter 1.1.2.3 --- Micronucleus --- p.6
Chapter 1.1.2.4 --- DNA strand breaks --- p.7
Chapter 1.1.3 --- Single-cell gel electrophoresis (comet) assay --- p.9
Chapter 1.1.4 --- Test organisms for comet assay --- p.12
Chapter 1.2 --- Objective of the present study --- p.13
Chapter Chapter 2 --- Genotoxicity of pollutants on Hyale crassicornis
Chapter 2.1 --- Introduction --- p.22
Chapter 2.2 --- Materials and methods --- p.24
Chapter 2.2.1 --- Sampling of amphipods --- p.24
Chapter 2.2.2 --- Acclimation --- p.24
Chapter 2.2.3 --- Acute toxicity test --- p.26
Chapter 2.2.4 --- The effect of test duration on DNA damage --- p.27
Chapter 2.2.5 --- Effect of toxicants on DNA damage --- p.28
Chapter 2.2.6 --- Comet assay --- p.29
Chapter 2.2.7 --- Chemicals --- p.34
Chapter 2.2.8 --- Data analysis --- p.34
Chapter 2.3 --- Results --- p.34
Chapter 2.4 --- Discussion --- p.47
Chapter Chapter 3 --- Genotoxicity of hydrogen peroxide on different tissue types of Metapenaeus ensis
Chapter 3.1 --- Introduction --- p.54
Chapter 3.2 --- Materials and Methods --- p.57
Chapter 3.2.1 --- Collection and acclimation of shrimps --- p.57
Chapter 3.2.2 --- Incubation --- p.59
Chapter 3.2.3 --- Comet Assay --- p.60
Chapter 3.2.4 --- Chemicals --- p.61
Chapter 3.2.5 --- Data analysis --- p.61
Chapter 3.3 --- Results --- p.61
Chapter 3.4 --- Discussion --- p.67
Chapter Chapter 4 --- Genotoxicity of wastewater on Hyale crassicornis
Chapter 4.1 --- Introduction --- p.71
Chapter 4.2 --- Materials and Methods --- p.72
Chapter 4.2.1 --- Collection of wastewater samples --- p.72
Chapter 4.2.2 --- Metal content analysis --- p.73
Chapter 4.2.3 --- Genotoxic effect of wastewater samples on Hyale crassicornis --- p.74
Chapter 4.2.4 --- Chemicals --- p.76
Chapter 4.2.5 --- Statistical analysis --- p.77
Chapter 4.3 --- Results --- p.77
Chapter 4.3.1 --- Metals content in water samples --- p.77
Chapter 4.3.2 --- DNA damage --- p.79
Chapter 4.4 --- Discussion --- p.79
Chapter Chapter 5 --- Conclusions --- p.89
References --- p.91