Now showing items 21-40 of 151

    • Management of Lake Ziway fisheries in Ethiopia 

      Yohannes, Felegeselam (Master thesis; Mastergradsoppgave, 2003-06-02)
      This study has been conducted in the northern most Rift Valley lake fishery – lake Ziway. Catch & effort and economic data have been used to analyze its fishery. The aim of the analysis was to review the present management situation of the lake and to apply bioeconomic theory to estimate the maximum and economic yields of the lake. The Schaefer’s surplus production model has been employed to ...
    • Industrial restructuring and enterprise development. The state, importance and development strategies for the fisheries sector of Vietnam 

      Nguyen, Thanh Binh (Master thesis; Mastergradsoppgave, 2003-06-02)
      This paper presents the importance, the state of affairs and the development strategies of the state-owned enterprises in the Fishery sector of Vietnam. The purpose is, firstly, to review state-owned enterprise reform literature of relevance to Vietnam. Secondly, the reform of state-owed enterprises in Vietnam particularly in the Fisheries Sector is reviewed to determine the important issues and ...
    • Age determination in the snapper Lutjanus guttatus (Pisces, Lutjanidae) and investigation of fishery management strategies in the Pacific Coast of Guatemala 

      Andrade Rodriguez, Hector Antonio (Master thesis; Mastergradsoppgave, 2003-06-05)
      The rose-spotted snapper, Lutjanus guttatus, seems to be sequentially exploited by the shrimp trawler and the artisanal fleet along the Pacific Coast of Guatemala. The growth parameters of the snapper were estimated in the present study with basis on material collected in two fishing harbours. Other biological and fishery information was compiled to simulate stock dynamics with a yield-per-recruit ...
    • An assessment of the vulnerability of Ghana's coastal artisanal fishery to climate change 

      Minta, Sheila O. (Master thesis; Mastergradsoppgave, 2003-06-05)
      Considering the fact that nearly 25% of the Ghanaian people live in the coastal zone and about 10% depend on the coastal fishery for livelihood, it is likely that any changes in the production of the fishery may impact on the socio-economic lives of the people. For the past four decades, climatic conditions ha ve been found to be changing in the country. This period coincided with the conspicuous ...
    • Behaviour and patterns of habitat utilisation by deep-sea fish. Analysis of observations recorded by the submersible Nautilus in "98" in the Bay of Biscay, NE Atlantic 

      Alves, Dário Mendes (Master thesis; Mastergradsoppgave, 2003-06-05)
      Analysis of video recordings performed by the submersible “Nautile” in the Bay of Biscay, NE Atlantic indicated that demersal fish species are associated to different types of deep-sea habitats. Four different dive transects were analysed with respect to environmental characteristics. A total of 19 fish groups were ordinated by means of canonical correspondence analysis, and the investigation ...
    • The profitability and management of the Norwegian Red King Crab (Paralithodes Camtschaticus) fishery 

      Wessel, Kari (Master thesis; Mastergradsoppgave, 2004-05-28)
      The Red King Crab and the consequences of its introduction to the Barents Sea and the North-Norwegian coast has been a source for research in many directions for several years. There has not been much financial research, despite the fact that the Red King Crab is a highly valuable nutritional species which gives it a highly economically value. In this thesis I look into the profitability for the ...
    • Ecosystem effects of red king crab invasion. A modelling approach using Ecopath with Ecosim 

      Falk-Petersen, Jannike (Master thesis; Mastergradsoppgave, 2004-05-28)
      Barents Sea ecosystem is limited. Due to the information available on benthos the Ecopath model of Sørfjord, Northern Norway, was used to investigate possible trophic changes with introduction of king crab to the model. A literature study of the king crab was conducted to find information on diet, mortality, consumption rate and other life history parameters required by the model. A short ...
    • Fishery resources of the Gulf of Tonkin, Vietnam. The state of indicator species monitored by bottom trawl surveys 

      Nguyen, Thong Ba (Master thesis; Mastergradsoppgave, 2005-05-20)
      In the period 2001-2004 four bottom trawl surveys were carried out in the Gulf of Tonkin to investigate the aquatic stocks in the Vietnamese sector (67,370km2). The Gulf has tropical characteristics and great diversity of commercial species, but lately fishing pressure seems to have grown excessively. The swept-area cruises followed a stratified random design, with a fixed station grid imposed ...
    • Credit for small scale fishery in Mozambique 

      Momade, Fernando Charamatane (Master thesis; Mastergradsoppgave, 2005-05-23)
      The small-scale fishery is a traditional activity and enrolled in social and cultural practices of the coastal communities and some places of the inland waters of Mozambique. This activity is one of the largest sources of income and employment. In 1990, Mozambique adopted the market economy and since 1992, the State begun a progressive liberalisation of financial institutions. At the same time, ...
    • The Northern fisheries of the Russian Federation. Institutions in transition 

      Ivanova, Maria (Master thesis; Mastergradsoppgave, 2005-05-23)
      The existing management system in the Russian fishing industry was created as a result of the political, economic and institutional transformations that took place in Russia after the dissolution of the Soviet Union in 1990. This thesis analyses the processes in the fisheries that led to the establishment of the existing institutional and management practice. The study seeks to find out how the ...
    • Prediction of larval viability based on egg quality parameters and early cleavage patterns in the experiments of triploidy induction in Atlantic cod, Gadus morhua L. 

      Rani, Manira Sultana (Master thesis; Mastergradsoppgave, 2005-05-27)
      Abnormal blastomere morphology may be indicative of low egg viability in fish and therefore represent a useful tool for rapid qualitative assessments for commercial and experimental aquaculture purposes. This work reviews the literature on this subject, and compares early cleavage patterns in a series of preliminary experiments of triploidy induction in Atlantic cod, Gadus morhua. Data from 4 ...
    • Bioeconomic assessment of the Mozambican shallow water shrimp fishery 

      Sumale, Américo Dramane (Master thesis; Mastergradsoppgave, 2005-05-30)
      The Shallow Water Shrimp fishery is the most important fishing activity in the Mozambican fishing industry. The shrimp resources along the Mozambican coast are concentrated in the Maputo Bay, Limpopo River mouth and Sofala Bank. Sofala Bank is the most important fishing area with around 50.000 Km2. Three main fleets exploit the shrimp resources, namely, artisanal, semi-industrial and industrial. ...
    • Indigenous knowledge of marine ecosystems. Consumption, commercialization and management in the Miskito community of Sandy Bay and the Rama community of Punta Aguila, Caribbean Coast of Nicaragua 

      Hulse, Kirkman Joe Roe (Master thesis; Mastergradsoppgave, 2005-05-30)
      This thesis an effort is made to present the indigenous knowledge of marine ecosystems in the communities of Sandy bay (Miskito) and Punta Aguila (Rama) of Nicaragua. The aim is to identify and show how these fishing communities are using and transmitting their knowledge for resource harvesting and management. As indigenous people are facing changes in their daily life; conflict of resources use, ...
    • Analysis of marine aquaculture developments in Namibia. Environmental, economic and legislative considerations 

      Iitembu, Johannes Angala (Master thesis; Mastergradsoppgave, 2005-05-30)
      This multidisciplinary analysis of Namibia marine aquaculture developments has found it to have a good potential. Existing Namibian aquaculture laws are comprehensive in nature controlling aspects such as water, land, public health, sanitation and disease, however they ignore fish welfare. Mean temperature of Namibian marine coastal waters in the150 m water depth strata has averaged at 14.07 oC for ...
    • Effect of 11-ketotestosterone on sperm production by male spotted wolffish (Anarhichas minor) 

      Kugathaj, Subramaniam (Master thesis; Mastergradsoppgave, 2005-05-30)
      Three experiments were performed during spring 2004, to develop a method to elevate the blood plasma level of 11-ketotestosterone (11-KT) in male brood stock of spotted wolffish Anarhichas minor, and to study the effects of 11-KT on sperm production. Intraperitoneal implantation of silastic capsules containing 11-KT - coconut butter mixture and 11-KT - sesame oil mixture and intramuscular injection ...
    • Antibacterial activity in fish mucus from farmed fish 

      Mozumder, Mohammad Mojibul Hoque (Master thesis; Mastergradsoppgave, 2005-06-17)
      Mucus samples were collected from five different farmed Atlantic salmon (Salmo salar) and Atlantic cod (Gadus morhua) in order to study the content of antibacterial activity in the mucus and to compare the activity of mucus samples of the two different fish species. The mucus samples were diluted in buffer, desalted and adjusted to different protein concentrations in the mucus samples, A search ...
    • Motives for and barriers against entering the Russian seafood market. Case study of four Norwegian companies. 

      Sidoryuk, Arina (Master thesis; Mastergradsoppgave, 2006-06-02)
      The paper is devoted to consideration of main aspects of internationalization process of the firm. The international marketing literature and findings of previous studies in the area construct theoretical framework for the conceptual model, worked out for the purposes of current research. Empirical study investigates motives for entering the Russian seafood market, perceived barriers and choice of ...
    • Right tool, wrong target? Co-management in the Ugandan fishery sector 

      Olyel, Daisy Aciro (Master thesis; Mastergradsoppgave, 2006-06-02)
      This thesis examines the effectiveness of the co-management approach in the fishery management system of Uganda with specific case reference to the implementation of the Beach Management Units (BMU), an institutional structure for the co-management approach, in the Lake Kyoga and Lake Victoria fishing villages. The theoretical frame work of this thesis involves looking at the concept of co-management, ...
    • Status of capture fisheries activities and management in Tri An reservoir, Vietnam 

      Phan Thanh, Lam (Master thesis; Mastergradsoppgave, 2006-06-02)
      Reservoir fisheries management must be based on an understanding that they are complex and dynamic ecosystem. This study describes fisheries activities status in the Tri An reservoir. The main objective is to determine an efficient exploitation level of fisheries resources affected by the stocking program. The Verhulst-Schaefer model (logistic growth) was applied and the classic model modified ...
    • Bioeconomic analysis of the shrimp trawl fishery in the Tonkin Gulf, Vietnam 

      Nguyen, Thanh Viet (Master thesis; Mastergradsoppgave, 2006-06-02)
      The objective of this study is to investigate the sustainability properties of the stock and management of the shrimp trawl fishery in the Tonkin Gulf, Vietnam. Surplus production models of Verhulst-Schaefer and Gompertz-Fox are applied to the shrimp trawl fishery, which is a typical tropical fishery with the characteristic properties of small scale and multi-species fisheries. There are two ...