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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The metabolism of the detergent alkylate, 2-phenyldodecane and other xenobiotics in fish

Burke, Alison Barbara January 1992 (has links)
No description available.
2

Endocrine disruption studies in freshwater fish : dietary versus waterborne exposure in fathead minnows (Pimephales promelas), and field investigations of histopathology in three-spine stickleback (Gasterosteus aculeatus)

Pickford, Karen Alessandra January 2004 (has links)
No description available.
3

The reproductive and toxicological effects of androgenic and anti-androgenic compounds in fish (Pimephales promelas)

Hala, David January 2007 (has links)
No description available.
4

The effect of cadmium pollution on apoptosis in the immune system of carp (Cyprinus carpio)

Abedi, Shafa Eddin January 2003 (has links)
No description available.
5

An integrated approach to assess impact of environmental stress in carp, Cyprinus carpio L. : biochemical, genotoxic, histopathological and individual level effects

Mustafa, Sanaa A. January 2012 (has links)
Studies were undertaken to determine toxicological effects in a model species, Cyprinus carpio L. following hypoxic exposure either alone or in combination with representative heavy metal (i.e. copper; Cu) via a dietary route, at different levels of biological organisation (viz. biochemical, histological and individual level effects). Initially, the validation study of biological responses using a range of concentrations of dietary Cu as a relevant environmental contaminant was carried out (Chapter 3). The results showed a range of biological responses in exposed fish including significant genotoxic response as determined by induction of DNA strand breaks (i.e. the Comet assay) with bacterial enzymes Fpg and Endo-III (for detection of oxidative DNA damage) and reduction in growth rate suggesting the robustness of selected biomarkers. Subsequently, this approach was used initially to determine the biological responses following chronic hypoxic and hyperoxic exposure (Chapter 4). The results suggested that both hypoxic and hyperoxic conditions lead to a range of comparable biological responses. Following relative evaluation of chronic hypoxic and hyperoxic exposures, experiments were carried out to elucidate potential interactive effect of hypoxia in combination with dietary Cu (Chapter 5). The combined exposure of hypoxia and Cu induced a significantly higher level of DNA damage suggesting that DNA damage in fish can serve as a sensitive biomarker for changes in water quality as well as presence of genotoxic chemicals. The final sets of experiment were carried out to determine the biological responses in C. carpio following exposure to chronic hypoxic stress and subsequent recovery in normoxic condition for 7 days. Real-time PCR (qPCR) technology was used to examine the hypoxia inducible Factor-1 α (HIF-1α) gene expression pattern (Chapter 6). The results suggested that the expression levels of HIF-1α in response to hypoxia were significantly higher compared to normoxic controls, a high level of oxidative DNA damage under hypoxia and re-exposure to normoxic condition (i.e. recovery period). This will shed lights for development of adaptive response in higher vertebrates, which could also have significant clinical implications in human health.

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