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Dissertations / Theses on the topic 'Toxicity of copper in worms'

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Published: 4 June 2021

Last updated: 9 February 2022

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1

Ozoh, Patrick Thomas Ezenwa. "Studies on the toxicity of copper to various stages in the life cycle of Hebiste (Nereis) diversicolor (O.F. Muller)." Thesis, University of Hull, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381879.

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2

Chapman, Kimberly K., Michael J. Benton, Ralph O. Brinkhurst, and Phillip R. Scheuerman. "Use of the Aquatic Oligochaetes Lumbriculus Variegatus and Tubifex Tubifex for Assessing the Toxicity of Copper and Cadmium in Spiked-Sediment Toxicity Bioassay." Digital Commons @ East Tennessee State University, 1999. https://dc.etsu.edu/etsu-works/2881.

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A sediment toxicity test using the freshwater oligochaetes Lumbriculus variegatus and Tubifex tubifex was performed. We evaluated acute and chronic toxicity affects of copper and cadmium on reproduction in both species and the bioaccumulation of both metals by L. variegatus using artificial sediment. L. variegatus bioconcentrated copper 22‐fold and cadmium 16‐fold after a 14‐day exposure to spiked artificial sediments with 0.02% organic content. The EC50 for T. tubifex varied depending upon endpoint from 2.7 to 2.8 mg/L for cadmium and from 8.4 to 8.9 mg/L for copper. The EC50 for L. variegatu

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3

Calafato, Sara A. "Investigating copper toxicity in Caenorhabditis elegans." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/54598/.

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Increases in global industrialisation are causing a growing release of pollution into the environment. Pollution, particularly by heavy metals is a significant problem as they are non-biodegradable, thus able to accumulate in ecological systems. The heavy metal copper (Cu) though toxic in excess is also an essential trace element that serves as a cofactor in many critical biological processes such as respiration, iron transport and oxidative stress protection. It is therefore important to assess the effects of Cu toxicity on the ecosystem and its natural communities, as environmental pollution

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4

Taylor, Lisa N. McDonald D. G. "Physiological indicators of waterborne copper toxicity in freshwater fish /." *McMaster only, 2002.

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5

Bell, Thomas Allen. "Copper uptake and toxicity in tilapia Oreochromis niloticus exposed to copper sulphate." Thesis, University of Stirling, 1996. http://hdl.handle.net/1893/1835.

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The copper uptake and toxicity of young and market-size tilapia, Oreochromis niloticus, exposed to copper sulP'hate were investigated. A series of preliminary experiments were conducted to provide requisite information for the final experiment. Preliminary experiments established uptake by the culture systems, feed and/or faeces, and. the impact of fish nutritional state on uptake. Other experiments established the median lethal concentration of copper to this species, an extrapolated minimal lethal concentration, and the optimum exposure duration and concentration for copper uptake. The remai

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6

Watt, Nicole Tracey. "Cellular targets of copper toxicity in cultured hepatocytes." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322946.

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7

Charmley, L. L. "Copper metabolism and toxicity in cattle and pigs." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370118.

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8

Barrow, Linda. "Copper hepatotoxicity and transport." Thesis, University of Leicester, 1988. http://hdl.handle.net/2381/35207.

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Indian Childhood Cirrhosis (ICC) is associated with excessive copper ingestion and hepatic deposition, is preventable by preventing copper ingestion and is partially treatable by copper chelation. However, copper administration causes only minimal hepatic damage in the rat and an acute rather than chronic liver injury in sheep. The hypothesis is explored that a second hepatic insult is synergistic with copper in causing cirrhosis. D-galactosamine was administered, to control rats and to rats orally dosed with copper acetate, to induce an acute hepatic injury documented by serum transaminases a

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9

Dincer, Zuhal. "Copper toxicity in sheep : studies on copper chelation by ammonium tetrathiomolybdate (TTM) and metallothionein." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241482.

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10

Blanchard, Jonathan. "Copper Toxicity and Accumulation: Physiology, Chemistry, and Molecular Biology." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/284.

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Our knowledge of aquatic Cu toxicity has increased greatly over the past several years culminating with the incorporation of a model (the Biotic Ligand Model (BLM)) into the regulatory framework which allows for the site specific adjustment of water quality criteria based on water chemistry. However, our understanding of Cu toxicity in the aquatic environment is limited mostly to freshwater (FW). Because of this limited knowledge, this dissertation set out to examine the affect of salinity on Cu toxicity and accumulation across salinities from FW to sea water (SW). First, this work examined

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11

Schweigert, Nina Anke. "Modes of action and toxicity of (chloro-)catechol/copper combinations /." Zürich, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13353.

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12

LaBreche, Timothy Merrick Clark. "Toxicity of Copper to Mercenaria mercenaria (Hard Clam)." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/46181.

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Toxicity of copper to larval <I>Mercenaria mercenaria</I> was evaluated with static non-renewal and continuous renewal methods that permitted daily observation of mortality, activity, development, and metamorphosis without subsampling. Clam larvae, 100 - 150 microns, were held for up to two weeks in small, 30 mm, sealed petri plates during static assays with excellent survival of control organisms, low evaporative losses, and relatively low between replicate variability. An eight day LC50 of 12 micrograms / liter for six day old organisms was determined as well as EC50s (active swimming). E

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13

Flora, Christopher S. "The Silicon-Mediated Alleviation of Copper Toxicity in Nicotiana tabacum." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1537286692916071.

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14

Fuentealba, I. C. "Cellular mechanisms of toxicity and tolerance in the copper-loaded rat." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383477.

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15

Nielsen, Hanne Dalsgaard. "Copper toxicity in the physiology and early development of Fucus serratus." Thesis, University of Plymouth, 2002. http://hdl.handle.net/10026.1/502.

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16

Sirois, David J. "Theoretical copper sulfate dosing: the effect of alkalinity and humic acid on ionic copper toxicity to algae /." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03022010-020227/.

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17

O'Reilly, Kirk Thomas. "The role of copper in the apparent aluminum toxicity of aquatic systems." PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3522.

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The effect of variations in aluminum and copper concentrations on the growth rate and enzyme activity of the green alga Scenedesmus quadricauda was investigated. The goal was to determine which chemical species control the biological parameters. The computer program MINEQL (Westal et al 1976) was used to estimate chemical speciation. In the prevalence of both metals, algal growth rate and alkaline phosphatase activity could be correlated to cupric ion activity. The activity of isolated bacterial alkaline phosphatase was found to be a function of both total copper concentration and cupric ion a

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18

Payne, Chris 1971. "Phylogenetic trends in phytoplankton resistance to Cd and Cu toxicity." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24033.

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Some species of marine phytoplankton are believed to be more tolerant of high concentrations of trace metals than others, but no conclusive test of this hypothesis has been conducted. Eleven species of phytoplankton representing 5 classes were grown in Aquil medium containing Cd$ sp{2+}$ concentrations between 10$ sp{-9.85}$ and 10$ sp{-6.84}$ M. Growth rates and intracellular concentrations of Cd, C, N and S were measured. Cadmium quotas (mol Cd/litre-cell volume) were lower in members of Bacillariophyceae than in Chlorophyceae, Prymnesiophyceae, Dinophyceae and Cyanophyceae (ANOVA, p $<$ 0.0

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19

Woodall, Christopher John. "Cadmium, zinc and copper regulation involving metallothionein gene expression in the Anuran X. laevis." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328602.

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20

Arnegard, Matthew E. "Toxicant-releasing substrates : a new method for delivering copper to microbial communities in SITU /." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-12162009-020200/.

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21

Garnacho, Eva. "Ecotoxicology and ecophysiology of mysids, with special reference to copper toxicity in Praunus flexuosus." Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/42089/.

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Toxicity of dissolved copper was examined in a common coastal mysid population {Praunusflexuosus). The life cycle and ecophysiology were studied under natural conditions throughout the year, and responses to dissolved copper were determined in the laboratory. Pronounced and ontogenic seasonal differences in copper toxicity for the mysid Praunus flexuosus were observed. Sublethal and lethal parameters (mortality, behaviour, metabolism, reproduction, and bioaccumulation) showed seasonal variation in response to copper toxicity, being highest toxicity in summer. Changes in the form of dissolved c

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22

Blake, Deanne Renee. "Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115048/.

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Nanoparticles may affect secondary pollutants such as copper. Layer Double Hydroxides (LDH) are synthetically produced nanoparticles that adsorb copper via cation exchange. Pretreatment of copper test solutions with LDH nanoparticles followed by filtration removal of LDH nanoparticles demonstrated the smallest LDH aggregates removed the most copper toxicity. This was due to increased surface area for cation exchange relative to larger particle aggregates. Co-exposure tests of copper chloride and clay were run to determine if smaller clay particles increased copper uptake by D. magna. Coex

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23

Mohammadbakir, Sahib. "Impacts of waterborne copper and silver on the early life stage (ELS) of zebrafish (Danio rerio) : physiological, biochemical and molecular responses." Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/6550.

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Toxic metals are major pollutants of the aquatic environment and are able to cause survival impairment of the early life stage of the aquatic organisms. They can affect the osmoregulatory system and electrolyte balance in fishes as well as the expression of genes which are essential in the formation and development of the organs at the early embryonic stages of development. There are a lack of studies concerning the toxic effects of waterborne copper and silver on the osmoregulation, electrolytes balance and expression the genes which are responsible for the formation and development of heart

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24

Gamez, Grijalva Victor Manuel. "BIOLOGICAL AND PHYSICAL-CHEMICAL METHODS FOR TREATMENT OF SEMICONDUCTOR MANUFACTURING EFFLUENTS." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195838.

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Semiconductor manufacturing is one of the most advancing, growing and evolving industries. The production of semiconductors presents several challenges, both technologically and environmentally. The amount and complexity of the chemical substances utilized in the manufacturing process has been growing exponentially, and new chemicals are often introduced to the process and the environment. Two steps of this process play a special important role in the introduction of new chemical and demand of natural resources: Chemical Mechanical Planarization (CMP) and Photolithography.Wastewaters from the

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25

Abdul, Rahim Khairuddin bin. "Interactions of arbuscular mycorrhizal symbionts with arsenic and other potentially toxic elements." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326752.

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26

Hanvey, W. C. "The influence of chemical speciation of copper and cadmium on toxicity in Gammarus duebeni, Asellus aquaticus, and Baetis spp." Thesis, University of Ulster, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356450.

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27

De, Vizcaya Ruiz Andrea M. G. "Distribution, toxicity and mode of action of the novel copper-based anticancer compound, casiopeina II." Thesis, University of Surrey, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310720.

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28

Sarell, Claire Jessica. "The copper-amyloid-beta-peptide complex of Alzheimer's disease : affinity, structure, fibril formation and toxicity." Thesis, Queen Mary, University of London, 2010. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1293.

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Senile plaques of Alzheimer’s disease (AD) patients are composed primarily of the amyloid-β-peptide peptide (Aβ), and within these plaques Cu2+ ions are found concentrated and directly bound to Aβ. Cu2+ homeostasis is severely impaired in AD patients and recent in vivo studies implicate Cu2+ in the etiology of AD. However the role of Cu2+ ions in AD is currently highly disputed due to the low reported affinity of Aβ for Cu2+ (nM and μM), and Cu2+ binding to Aβ is thought to result in amorphous aggregation rather than fibril formation. These two aspects, along with the coordination geometry, st

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29

Campbell, Melissa N. "Effects of Predatory Cues on Copper Sensitivity and Metabolic Rate in Gambusia affinis." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3250.

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Organisms living in aquatic environments are subject to a number of stressors from natural (temperature, predation, food availability) and anthropogenic origins (pesticides, metals, etc). Natural stressors may amplify the effects of contaminants and increase an organism’s sensitivity to them. Understanding the impact of these combined factors is therefore essential for the practical management of contaminants. This study sought to examine how predatory cues affect copper tolerance in the mosquitofish, Gambusia affinis. The influence of predatory cues on fish metabolic rate was also evaluated t

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30

Bradley, Matthew Darren. "The accumulation and toxicity of copper, zinc and manganese in the farmed snail Helix aspersa maxima." Thesis, Bangor University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307215.

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31

Wong, Nga Cheung. "Effects of algae (Isochrysis galbana) and humic acids on copper toxicity to polychaete (Hydroides elegans) larvae." HKBU Institutional Repository, 2005. http://repository.hkbu.edu.hk/etd_ra/665.

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32

Simpson, Melinda Mallory. "USE OF COPPER SULFATE TO CONTROL HAEMONCHUS CONTORTUS INFESTATION IN HAMPSHIRE EWES." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_theses/135.

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Two studies were conducted to evaluate the effectiveness of using copper sulfate (CuSO4) as a drench in Hampshire ewes to control stomach worms (Haemonchus contortus). A study was conducted to assess the effectiveness of CuSO4 to control gastrointestinal nematodes (GIN) over a three year period. Ewes were FAMACHA scored, hematocrit evaluated for packed cell volume (PCV), and fecal egg counts (FEC) were determined from 2007 through 2009. Ewes received only CuSO4 to control GIN. Ewes with FEC exceeding 6,000 eggs/g feces were drenched. A separate study during the summer of 2008 assessed the pote

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33

Wang, Xiaoyan. "Synucleins and their roles in the pathology of Parkinson's disease as metal binding proteins." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512329.

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α-synuclein is an abundant and conserved presynaptic brain protein (Uversky 2007). It has received extensive attention since its aggregation was identified as the main component of Lewy bodies and Lewy neurites, which is the pathological hallmark of several neurodegenerative diseases, collectively known as synucleinopathies, including Parkinson's Disease (PD) (Uversky 2007). Considerable information has been collected about the structural properties and conformational behavior of α-synuclein, although the precise function is still under investigation. Metal ions such as copper and iron, can ac

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34

Dagan, Roi. "Metal attenuation and toxicity reduction of chromated copper arsenate pressure treated wood leachate by three Florida soils." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001205.

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35

Kahokola, K. V. "The effect of copper, arsenic and chromium on plants and the use of the water cooled atom trap as a preconcentration technique." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384436.

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36

Garris, Heath W. "Feed comparison for dietary standardization of the sea urchin Lytechinus variegatus and assessment of parental dietary copper toxicity by fertilization and embryological tests." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/garris.pdf.

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Thesis (M.S.)--University of Alabama at Birmingham, 2008.<br>Additional advisors: Marion Nipper, Robert A. Angus, Addison L. Lawrence. Description based on contents viewed May 30, 2008; title from title screen. Includes bibliographical references.

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37

McCann, Mary T. "Toxicity of zinc, copper, and sediments to early life stages of freshwater mussels in the Powell River, Virginia." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-07112009-040226/.

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38

Galyas, Éva. "Concentrations of lead, copper and zinc in forest soils near industrial areas." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-40363.

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Environmental contamination with heavy metals, especially of soils, has been a continuousproblem worldwide since the beginning of the industrial revolution. Heavy metal emissionshave increased continuously since 1900 and the metals accumulate in the environment. Pulpand paper mill factories, and factories which produce sulphuric acid emit heavy metals,among others lead (Pb), copper (Cu) and zinc (Zn). Results from previous studies showedthat the soils near factories had higher concentrations of these pollutants than the controlplace. In this study I want to determine the effects of industrial

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39

Weaver, Meghan C. "Effects of Copper Sulfate Application on Zooplankton and Macroinvertebrate Communities in Upground Reservoirs." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1339094079.

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40

Lai, Ian Kwan-Tai. "Using dietary strategies to explore mechanisms of hepatic toxicity caused by 3,3',4,4',5-Pentachlorobiphenyl (PCB 126) in an animal model." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1157.

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This doctoral dissertation work strived to contribute to the ever expanding knowledge about the mechanisms of polychlorinated biphenyl (PCB) toxicity using dietary strategies. PCBs are a family of persistent environmental pollutants with a wide range of toxicity. The toxicity of PCBs is largely dependent on the congener's chlorination pattern. Of particular interest to this work was 3,3',4,4',5-pentachlorobiphenyl (PCB 126), the most potent of the dioxin-like PCB congeners. I hypothesized that in vivo PCB 126 toxicity will be ameliorated by dietary selenium supplementation, lowered dietary cop

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41

Schwertfeger, Dina. "The effects of soil leaching on metal bioavailability, toxicity and bioaccumulation in «hordeum vulgare» cultivated in copper amended soils." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96995.

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Discrepancies in ecotoxicity effects data derived from soils amended with dissolved metals in the laboratory and soils from historically aged metal-contaminated sites pose a challenge in deriving environmentally relevant soil quality criteria. In this thesis, the chemical artefacts produced by dissolved metal additions and the subsequent effects on metal bioavailability, toxicity and bioaccumulation are examined. The overall goal of this research is to advance the understanding of soil trace metal bioavailability mechanisms and improve current methods for ecotoxicity testing and bioavailabilit

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42

Schwertfeger, Dina. "The effects of soil leaching on metal bioavailability, toxicity and accumulation in Hordeum vulgare cultivated in copper amended soils." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115837.

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Discrepancies in ecotoxicity effects data derived from soils amended with dissolved metals in the laboratory and soils from historically aged metal-contaminated sites pose a challenge in deriving environmentally relevant soil quality criteria. In this thesis, the chemical artefacts produced by dissolved metal additions and the subsequent effects on metal bioavailability, toxicity and bioaccumulation are examined. The overall goal of this research is to advance the understanding of soil trace metal bioavailability mechanisms and improve current methods for ecotoxicity testing and bioavailabilit

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43

Owojori, Olugbenga J. (Olugbenga John). "Influence of clay content and salinity on the bioavailability and toxicity of metals (copper and zinc) to soil organisms." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1484.

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Thesis (PhD (Botany and Zoology))—University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Metal pollution is a problem of increasing global concern. It could arise from industrial activities, as well as pesticide use in agriculture, among other sources. For adequate protection of the soil ecosystem from metal toxicity, the bioavailability of metals must be properly evaluated. A plethora of soil factors affect the bioavailability of metals to soil organisms. These include pH, clay and organic matter contents, salinity among others. While much is known about the influence of some of these p

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44

Vaz, Cristiana Lourenço de Oliveira. "Efeitos do cobre no sargo (Diplodus sargus, Linnaeus 1758) : implicações quer a nível fisiológico, quer de crescimento." Master's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2011. http://hdl.handle.net/10400.5/4234.

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Dissertação de Mestrado em Engenharia Zootécnica-Produção Animal<br>O recente crescimento da aquacultura, juntamente com a introdução de novas espécies de peixes em sistemas de produção intensivos, levou a um aumento da ocorrência e diversidade de agentes patogénicos. O sulfato de cobre tem sido amplamente utilizado para a prevenção e controlo de ectoparasitas, contudo, pode tornar-se tóxico a altas concentrações, comprometendo a integridade fisiológica dos peixes. Deste modo, o objectivo deste estudo foi analisar os efeitos de diferentes concentrações de cobre a nível da toxicidade deste

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45

McManus, Paul. "Rhizosphere Interactions Between Copper Oxide Nanoparticles and Wheat Root Exudate in a Sand Matrix; Influences on Bioavailability and Uptake." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5058.

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Copper oxide nanoparticles (NPs) are used in an expanding range of industries including a potential for agricultural applications as a fungicide. Accidental spills or misapplication of CuO NPs may lead to soil contamination. Plant roots exude a wide range of organic chemicals for bioprotection and to enhance bioavailability of nutrients. Many of these chemicals are metal chelators that may increase the solubility of CuO NPs, thus enhancing the impact of these NPs on plants. This work was directed towards understanding which plant exudates force increased solubility of CuO NPs and to determine

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46

Kaiser, Sibylle Martina. "Interactions of copper and hydrophobic ionogenic organic pollutants in biological membranes and their consequences for bioavailability and toxicity towards algae /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17043.

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47

Postlethwait, Niel Holland. "Evaluation of Chelex 100 and Assessing the Impact of Fulvic Acid (NOM) on Copper Toxicity and Bioavailability to Americamysis bahia." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33811.

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A cation exchange method (Chelex 100) that distinguishes weakly bound and strongly bound copper was investigated for its ability to measure bioavailable copper in estuarine waters. Copper bound to the Chelex 100 resin was operationally defined as bioavailable copper. Varying initial copper concentration from 195 to 495 ug/L at a constant 12.5 mg/L natural organic matter (NOM) did not affect percent bioavailability. There were also no noticeable effects when varying total Cu concentration in the presence of 0, 12, and 24 mg/L NOM. An increase in pH from 4 to 8.5 and NOM from 0 mg/L to 12.

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48

Balinski, Michael A. "Differential Sexual Survival of D. Melanogaster on Copper Sulfate." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1462973269.

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49

Shaw, Benjamin John. "The ecotoxicology of engineered nanoparticles to freshwater fish." Thesis, University of Plymouth, 2011. http://hdl.handle.net/10026.1/565.

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The use of nanoscale materials is growing exponentially, but there are also concerns about the environmental hazard to aquatic biota. Metal-containing engineered nanoparticles (NPs) are an important group of these new materials, and whilst there are undoubtedly a plethora of beneficial uses for these NPs, it is essential that an appropriate risk assessment is carried out in order to protect the environment and human health, with the consumption of contaminated fish a distinct possibility. The current study aimed to assess the bioavailability, uptake and toxicological effects of two metal-NPs (

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50

Frese, Thomas Jay. "Acute toxicity of copper sulfate in juvenile red drum (Sciaenops ocellatus) and the establishment of safe methods to control parasitic disease." FIU Digital Commons, 1994. http://digitalcommons.fiu.edu/etd/3418.

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A series of static 96 hour acute toxicity tests were performed on juvenile red drum of different sizes. The tests were implemented to assess the acute toxicity of copper sulfate to juvenile red drum and establish narrowly defined guidelines for its usage in the treatment of Amyloodinium ocellatum and Cryptocaryon irritans. Median lethal concentrations at which a 50 percent mortality response (LC5 o) were observed ranged from 0.28 mg/1 to 0.88 mg/l in the series of five 96h static acute toxicity tests. A significantly higher sensitivity was observed in early juveniles (2.9 g, 53.3 mm) versus th

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