Pinheiro, Marcel D.O.

This thesis develops and utilizes in vitro approaches to study ciliate/fish interactions. The thesis is divided into six chapters. Chapter one reviews the literature on culturing ciliates and fish cells. Chapter two develops methods for culturing the ciliate Tetrahymena thermophila in media developed and used for mammalian and piscine cells. Chapter three explores the interactions of T. thermophila with monolayers of epithelial cells from fish and mammals. Chapter four studies the interactions o...

Messner, Jordan S

No description available.

Mina, Kym Deanne

[Truncated abstract] The role of fish consumption and omega-3 polyunsaturated fatty acids (PUFAs) in the prevention of disease has been the subject of much investigation in recent years. A clue that these factors might be of importance was the observation that populations consuming high levels of marine omega-3 PUFAs had lower rates of morbidity and mortality from cardiovascular disease. From there, research in this area has expanded to include a range of chronic diseases and their prevention. A...

Cyrus, Digby Paul.

Studies In other parts of the world have proved that turbidity affects aquatic life and work In Australia and North America has shown that the distribution of some fish species may be determined by the level of turbidity present. This, coupled with the fact that: (i) Natal estuaries are important as nursery areas for the juveniles of many marine fish species, (ii) the estuaries exhibit a wide range of turbidities and (iii) little was known of the effects of turbidity on the fish populations in e...

Jacquet, Jennifer L.

The human appetite for seafood has intensified and so has overfishing and damage to marine ecosystems. However, the true demand for seafood is often not captured in the national or United Nations Food and Agriculture Organization (FAO) statistics. The underreporting of catches is prevalent worldwide, which inevitably leads to mismanagement, and justifies data improvements via catch reconstructions. For instance, marine fisheries catch reconstructions for 1950 to present for Mozambique and t...

Basu, Niladri

Stress in fish is ubiquitous in natural and anthropogenic environments, and has the potential to cause major environmental and economic losses. Due to this, there is a need to develop a broad range of tools in risk assessment that facilitate the objective detection and assessment of stressed states in fish. It is well known that the exposure of fish to stressful stimuli activates a highly integrated stress response system that encompasses multiple levels of biological organization. At the o...

Allan, Jim H.

The Line Creek Mine has been operating in the Line Creek valley in southeastern B.C. since 1982. Line Creek is a tributary of the Fording and Elk rivers in the Kootenay/Columbia basin and supports indigenous populations of bull trout, westslope cutthroat trout and mountain whitefish and rarely, introduced brook trout and rainbow trout. A section of the upper main stem of Line Creek was covered by a rock drain and portions of the main stem of South Line Creek and Line Creek have been relocated to...

Qureshi, Mohiy-Ud-Din.

No description available.

Macouzet-García, Martin

Many proteins with special properties have been identified in aquatic organisms. Due to their peculiarity, some of these biomolecules could be used advantageously for some industrial and health care applications. However, the preparation of these biochemicals from its original source is highly impractical and generally unfeasible for commercial purposes. Nevertheless, the advances in DNA manipulation open the possibility of producing the recombinant proteins in different organisms to allow...

Chaveesuk, Ravipim

First grade and second grade Nampla, commercially produced Thai fish sauces, were analyzed for their chemical and microbiological composition. First grade commercially produced Nampla contained higher amounts of total nitrogen, formol nitrogen, free and total amino acids compared to second grade sauce. Most of the essential amino acids were present in both grades of sauces. Low microbial counts of halotolerant microorganisms were observed in both sauces. The use of trypsin and chymotrypsin to ac...

Sotocinal, Samson A.

A natural convection solar fish dryer consisting of a flat-plate solar collector, drying chamber, and an auxiliary heater was designed, constructed and tested in the Philippines. The dryer is capable of drying 5 kg of fish in 10 hours. / Water was first heated in a flat-plate solar collector then through thermosyphon effect, heat and mass was moved to the heat exchanger where heat was transferred to the air. Heated air was allowed to flow through the drying chamber where trays of prepared sample...

Wu, Brian

Presented at the Multidisciplinary Undergraduate Research Conference on March 8, 2008 in the Irving K. Barber Learning Centre, University of British Columbia.

Hammond, Tim

This thesis deals with in situ estimates of fish target strength distribution which are important in acoustic stock assessment. The data were gathered on Newfoundland's Grand Banks in 1992 using a dual-beam sonar system. In situ measures of target strength distribution are biased unless a correction is made for nonignorable missing data because high target strength fish can be detected more readily than low target strength ones. / Two methods of correcting for the bias are described and implemen...

Johansson, Ulf

Streams are important habitats, providing shelter and feeding opportunities for a wide range of organisms. The species depending on running waters includes a wide array of fish species, using these waters for their whole or parts of their lifecycle. Streams are also the subject of different anthropogenic impact, e.g. hydropower development. Hydropower development usually means lost connectivity, altered flow regimes and channelization. Channelization is one of the major factors causing stream ha...

Opondo, Paul Abiero

The developemnt of fisheries in Lake Victoria is faced with a myriad challenges including overfishing, environmental destruction, disappearance of certain indigenous species and pollution. All these problems can be located within the social, economic and political systems that exists today and in the past. This thesis, ‘Fishers and Fish Traders of Lake Victoria : Colonial Policy and the Development of Fish Production in Kenya, 1880-1978’, argues that the Luo fishers had their own indigenous tech...

Ana Filipa dos Santos Gonçalves

No description available.

Bolognesi, Marcela Cesar

Orientador: Eliane Gonçalves de Freitas / Banca: / Resumo: Peixes que apresentam relações de cooperação respondem a estimulação táctil (como massagens) reduzindo o estresse em uma interação entre cliente-limpador. Neste trabalho, nós testamos o efeito da estimulação táctil sobre a resposta ao estresse em um peixe territorial, a tilápia-do-nilo. Nós desenvolvemos um aparato formado de hastes verticais com cerdas de silicone nas laterais, que foi posicionado no meio do aquário, formando uma fileir...

Trapp, Thomas Alan, 1966-

Thesis (Nav.E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998. / Includes bibliographical references (leaves 134-135). / by Thomas Alan Trapp. / M.S. / Nav.E.

Kaczmarek, Adam S

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006. / Includes bibliographical references (p. 34). / This thesis examines the problem of sensing motion in a compliant biomimetic device. Specifically, it will examine the motion of a tail in a biomimetic fish. To date, the fish has been an open-loop system, the motion of the tail only controlled by the input to a servo motor. By sensing the motion of the tail, a closed loop system can be implemented to cont...

Gurunathan, Mohan, 1975-

Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998. / Includes bibliographical references (p. 70). / by Mohan Grurnathan. / S.B.and M.Eng.

McConnell, W. J.

No description available.

Alexander, Jean

Typescript, etc. / Digitized by Kansas State University Libraries

Henriksson, Anna

Invasions of non-native species cause problems in ecosystems worldwide, and despite the extensive effort that has been put into research about invasions, we still lack a good understanding for why some, but not other, communities resist these invasions. In this doctoral thesis I test hypotheses on biotic resistance using a large dataset of more than 1000 both failed and successful introductions of freshwater fish into Swedish lakes. We have found that the classic species richness hypothesis is a...

Thoresson, Joakim

The number of fish farms is increasing worldwide tomeet the global demand for fish used as a food source for humans. The WorldBank predicts that by 2030, 62 percent of all consumed fish globally will beproduced in fish farms. Due to this increasing demand for fish, fish farming isa growing business and the numbers of fish farms are increasing. Today, thereare fish farms situated in more than one hundred municipalities in rural partsof Sweden. Fish farms may besituated in hydropower plant reservo...

Lindmark, Elianne

The utilization of rivers for hydropower production leads to problems for migrating fish, such as Atlantic salmon (Salmo salar) and sea trout (Salmo trutta). Both salmon and trout reproduce in fresh water, but spend their adult years at sea. To overcome man-made obstructions to and from the spawning grounds the fish needs help. Fishways for upstream migrating fish is an old technique; however the efficiency is often low due to inefficient attraction water. The upstream migrating fish are attract...

McGinley, Susan

No description available.

Keeney, Nicholas Richard

Fish experiencing blooms of the cyanobacteria genera Microcystis and Anabaena acquire microcystin and saxitoxin through ingestion of contaminated food and absorption of dissolved toxin. Even low chronic doses induce sensory and motor impairmentthe impact of which is unquantified in wild populations. Here, I introduce Lagrangian particle models for cyanobacteria and fish which test the hypotheses that impairment symptoms suppress movement and growth. This is implemented within the Finite-Volume C...

Kiceniuk, Joe Willie

The limiting factors of swimming performance were studied in fish exercising in a water tunnel. The relationship between (10 min) critical velocity and body length determined in 10 species of freshwater teleosts is discussed with respect to the ratio of lateral red body musculature to total body weight. Electromyographic recording from red and white portions of the body musculature in four species of fish showed that red muscle fibers alone are active during steady swimming at sustained speeds. ...

Macdonnell, John Andrew

Behaviour to increased water velocity is examined in fast stream fish (Otocinclus, Hypostomus, Pterygoplichthys, Chaetostoma and Gyrinocheilus) and a slow water form (Farlowella). Behaviour can be divided into two stages; resting and adhesion (Chapter I). In Otocinclus a third fin extension stage is apparent. Based on the slipping velocity of live and dead fish it is determined that Gyrinocheilus has the greatest station holding ability on a smooth perspex surface. This is attributed to a comple...

Bell, Gertrude Mary

[no abstract submitted] / Science, Faculty of / Zoology, Department of / Graduate

Bennion, Glenda Ruth

The purpose of this study was to elucidate some of the mechanisms involved in the control of the function of the fish heart. In vitro experiments were conducted to determine the effect of varying input pressure, temperature, and epinephrine concentration on the isolated, perfused, trout heart. In vivo experiments were conducted with chronically implanted flow probes to determine the effect of increased blood epinephrine levels on the activity of the heart of the lingcod. Five variables were mea...

Lin, Hong

The effect of varying inhaled water pH on the acidification or alkalization of water as it passes over the gills in rainbow trout (Salmo gairdneri) was investigated by exposing the fish to pH 9.91 and pH 3.88 water. In the control and high pH treatment, water was acidified as it flowed over the gills of the fish because of the dominant effect of CO₂ hydration. Water was alkalized as it flowed over the gills of the fish in the low pH treatment due to NH₄⁺ formation and perhaps HCO₃₋ dehydration. ...

Huchzermeyer, Carl Friedrich

Bangweulu Wetlands is a 6000 km² public-private-partnership conservation area in northeastern Zambia, lying on the south-eastern margins of the Bangweulu Swamps, Congo River system. The area is important for wildlife conservation, tourism and as a fishing ground for the local inhabitants. This study provides a baseline of the fish and fisheries of this area. The conservation area is situated on the transition zone between woodland, floodplain and swamp. A total of 42 fish species representing 12...

Weaver, Ronald Otto, 1941-

No description available.

Storey, Susan

No description available.

Ruijter, Hester Marleen den.

Proefschrift Universiteit van Amsterdam. / Met lit.opg. en een samenvatting in het Nederlands.

Kulas, Elin

No description available.

Engelen, Johan Joseph Maria.

Proefschrift Universiteit Maastricht. / Met bibliogr., lit. opg. - Met samenvatting in het Nederlands.

Mohamed, Mostafa Kamel Saber.

University, Diss., 2005--Osnabrück.

Wang, Ting-Wei

This thesis presents a 3D stereoscopic interactive fish tank system that combines the 3D stereoscopy and ¡§controller-free¡¨ components. Based on the characteristics of human vision, when seeing the objects, the left eye image and right eye image will be slightly different, one can use the intensity information and the epipolar geometry to proceed matching, and then to generate the 3D depth information. This system allows a user to use gesture to do interaction. It estimates 3D objects depth inf...

Barker, Ceara Anne

No description available.

Ambusaidi, Hilal Saud

The Sultanate of Oman has 1700 km of coastline extending from the Arabian Gulf south to the Arabian Sea. The demersal fish distributions and assemblages have not previously been well defined. In winter, variations in the oceanography of the area are minimal. In summer, however, the Arabian Sea is strongly influenced by the southwest monsoon. For this study the continental shelf off Oman was divided into eight regional areas and research trawl data on the distribution of demersal fish assemblages...

Lee, Ching-man, 李靜敏

published_or_final_version / Medical Sciences / Master / Master of Medical Sciences

Bell, Karl

<p>Globalization and the rise of fish importation has led to an increase in mislabeling. To combat this problem, analytical and molecular methods have been employed. First, nitrofuran metabolites were extracted, hydrolyzed, and derivatized in channel catfish, swai, and tilapia. Utilizing high performance liquid chromatography coupled with triple quadrupole mass spectrometry, derivatized metabolites were detected at levels of 1 ng/mL with coefficients of determination greater than 0.998. Recoveri...

Sabbah, Shai

The overall objective of this thesis was to understand better the mechanisms that shape the diversity in colour vision of fish, and to explore the adaptive significance of this divergence. Among the vertebrates, teleost fish show the greatest diversity in colour vision systems. The cichlid model system illustrates that the visual system of fish may differ among species, sexes, individuals, and life stages of individuals. The large number of available cone opsin genes, which have resulted from mu...

Doyle, Bradley

Evolutionary history has been recognized as an important factor in studying ecological communities. Lake fish communities have had limited consideration from a community phylogenetics perspective and present the opportunity to include trophic interactions in the analysis. For the species under study, I used known phylogenies from the literature and genetic information to determine relative branch lengths and phylogenetic relationships by Bayesian inference. Using the resultant phylogenetic tree ...

Trapp, Thomas Alan.

CIVINS

Li, Dan, 1971-

Enzyme immobilization as a technique attaches free forms of enzyme molecules to stationary support materials to permit enzymes to be reused several times. Bovine trypsin as a model enzyme was immobilized onto controlled pore glass (CPG) beads to investigate the optimum conditions for immobilization, as well as the physico-chemical properties of the immobilized enzyme versus the free form of the enzyme. At pH 9, about 60% of the enzyme protein incubated with CPG was immobilized onto the CPG, and ...

Wu, Henry C.

Fish feed, feces and oxytetracycline (OTC) were added to sediment microcosm tanks in 1990, and the physical and biological changes in the benthic environment were followed over a period of 28 days. The main objective was to study the response of the microfauna (benthic microbial and protozoan communities) to fish waste. Results indicated that anoxic and highly reducing conditions were quickly reached in the sediments within a day, with a shift away from microbially mediated sulphate reduction to...

Knudby, Anders

During the last three decades of coral reefs studies, the large areal coverage of data derived from satellite images has increasingly been used to complement the more detailed but spatially limited data produced by conventional fieldwork. Continuous improvement in sensor capabilities, along with the development of increasingly refined methods for image processing, has lead to ever more accurate maps of physical and biological variables of importance to reef ecology. During the same period, an a...