Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Mariculture"”.
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Community participation in diversification options of the diamond mine, Alexkor Ltd : tourism and mariculture
… Ltd diversification projects, tourism and mariculture, in the Northern Namaqualand region. Their participation in these projects is crucial to ensuring that alternative economic options become a vehicle for socio-economic development in a post-mining economy. This is particularly important …
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A new sabellid that infests the shells of molluscs and its implications for abalone mariculture
Infestations of sabellid polychaetes were found in South African farmed abalone in 1994. Growth experiments confirmed that infested abalone had reduced growth rates. Surveys of both the intertidal and subtidal region at various locations around the South African coastline revealed that the sabellid …
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An assessment of the suitability of the galjoen, Coracinus capensis cuvier, for mariculture in South Africa
… of the galjoen, Coracinus capensis, for mariculture in South Africa has been assessed from both an economic and a biological viewpoint. In terms of economic criteria galjoen shows a high potential for culture, being widely known and highly regarded as a table fish. The restaurant trade in …
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The potential of Grateloupia filicina (Lamouroux) J. Agardh. for mariculture: culture experiments and observations on shore phenology
… year. Information of this kind is important for mariculture as it affects the supply of parent plants (and therefore spores) and the growth of young plants on ropes if these are released into the sea. The culturing experiments look promising; techniques (seeding ropes directly with spores or …
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Probiotic effect of Vibrio midae SY9, Cryptococcus sp. SS1 and Debaryomyces hansenii AY1 on the growth and disease resistance of farmed Haliotis midae
… only began in the 1980s. Since then, the abalone mariculture industry has expanded dramatically and currently produces between 500 and 800 tons of abalone per year with a net farm gate value of approximately R125 million. However, disease has had a severe impact on the international aquaculture …
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The characterisation of synoptic circulation patterns in Saldanha Bay
… it is an ideal site for the development of a mariculture industry, but a conflict of interest arises between the mussel farmers and the use of the iron-ore jetty and other sources of pollution. This thesis is a contribution to an effort to understand how the requirements of the mariculture …
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A geochemical investigation of the sediments in Small Bay, Saldanha Bay, with special reference to the mobility of Cd, Cu, Pb and Zn
… such as commercial and industrial fishing, the mariculture of mussels, and the exportation of iron ore and metal concentrates. Conflicting demands are being placed on the system, and the sediments are known to be contaminated with a range of trace metals. The handling of ore and metal …
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Maximizing profits for a commercial salmon rearing facility using linear programming
… based on current knowledge in the salmon mariculture field. The formulation provides for easy updating as technology advances.
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Effects of commercial kelp extract and plant growth regulators on growth of Gracilaria gracilis in culture
… et Farnham, with a view to the potential in mariculture, especially as this red seaweed is currently under cultivation in South Africa as feed in abalone aquaculture.
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Bioenergetics and growth of white steenbras, Lithognathus lithognathus, under culture conditions
… were determined to assess its suitability for mariculture. Fish were captured by seine netting, from nearby estuaries and transported to the laboratory where they were successfully kept for the duration of the experimental period. The fish were initially fed on white mussels and then weaned …
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The potential for Gracilaria polyculture at Jacobs Bay Sea Products Pty
… an indigenous red alga, into the west coast mariculture farm Jacobs Bay Sea Products Pty. Various methods for cultivating Gracilaria as well as environmental parameters, which influence growth of Gracilaria, are disltussed below. From these optimal conditions for the polycultivation of G. …
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Investigation of the role of the extracellular β-agarase, produced by the bacterial epiphyte Pseudoalteromonas sp. LS2i, in the virulence response towards the agarophyte Gracilaria gracilis
… way a consistent supply can be assured is by mariculture to supplement the natural harvests. In 1993 the Seaweed Research Institute (SRU) found that mariculture of G. gracilis in Saldanha Bay is feasible but that there is potential to improve yields by technical research and development …
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Harvest ecology and biodiversity of South African Porphyra
… Rhodophyta) is the world's most valuable maricultured seaweed, due to its high value as a food crop. The vast majority of Porphyra in South Africa belongs to P. capensis, a morphologically and ecologically plastic taxon apparently endemic to the region. There is no demand for P. capensis …
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Community ecology and population dynamics of the European native oyster (Ostrea edulis) in Essex, UK: A baseline for the management of the Blackwater, Crouch, Roach and Colne Estuaries Marine Conservation Zone
… and four sites within areas designated for the mariculture of native oysters. Data from both studies was then used to create an Integral Projection Model to assess the current status of native oyster populations, assess limiting factors to population growth, and make future projections of these …
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Saldanha Bay as a living space: negotiating (re)source dynamics in a water scarce Bay
… water maintenance, fresh water sourcing, and mariculture would work together to make each more resilient and provide opportunities for people to be grounded in their environment.
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The cultivation of Ulva lactuca (chlorophyta) in an integrated aquaculture system, for the production of abalone feed and the bioremediation of aquaculture effluent
… thallus colour was determined and can be used by mariculture farmers to assess the nutrient quality of Ulva as a food source for abalone which has important benefits for Ulva aquaculture. On the I & J farm the chosen stocking density (2 kg.m"2) produced maximum SGR and yields. At JSP the chosen …
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Thermal preferences of two cohorts of juvenile silver kob, Argyrosomus inodorus (Pisces: Sciaenidae)
… has been identified as a viable species for mariculture in South Africa due to its high demand and market value as well as the necessary biological traits such as high fecundity and fast growth rates. In order for the full scale commercial production to become a reality however, it is …
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Seaweed diversity in Saldanha Bay and the effects of human activities
… human activities in the Bay include shipping and mariculture. The major human impacts resulting from these activities are species introductions which often lead to a change in species composition in an area. Six sites were sampled in various visits in autumn and winter 2012. Two of the sites were …
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Characterisation of the effect of stress on nitrogen metabolism in the commercially important agarophyte, Gracilaria gracilis
… nitrogen stress response may ultimately revive mariculture of this commercially important alga in South Africa.
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