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 14 of 14 for “"bluefin tuna"”.
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The implementation of a management procedure approach to set catch limits for the Southern Bluefin Tuna and the Atlantic Bluefin Tuna
… (MP) approach to set catch limits for two bluefin tuna species: Southern bluefin tuna (SBT - Thunnus maccoyii ) and Atlantic bluefin tuna (ABFT - Thunnus thynnus). The thesis reviews possibilities and advances proposals for the implementation of this approach in two international tuna …
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On the reproductive biology of the western Atlantic bluefin tuna, Thunnus thynnus
<p>The Atlantic bluefin tuna, Thunnus thynnus, is a highly migratory species capable of traversing great distances throughout the North Atlantic Ocean, but spawning is known to occur only in the Mediterranean Sea and the Gulf of Mexico/Straits of Florida. The regulatory body charged with managing …
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Analysis of volatile compounds, proximate composition, and fatty acids in Pacific bluefin tuna (Thunnus orientalis)
Pacific bluefin tuna (PBT; Thunnus orientalis) has grown significantly in popularity in recent years due to the globalization of Japanese cuisine. PBT is highly sought after for sushi and sashimi products due to its great quality and taste. Wild populations of this species have been affected by …
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Tracking diet and movement of Atlantic bluefin tuna (Thunnus thynnus) using carbon and nitrogen stable isotopes
<p>Atlantic bluefin tuna (ABFT; Thunnus thynnus) are important top predators in pelagic ecosystems. Understanding their diet and movements is necessary for proper management, but existing methods are costly and logistically challenging. Naturally occurring stable isotopes have been used to study …
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Somatic condition, growth and distribution of Atlantic bluefin tuna (Thunnus thynnus) in the Gulf of Maine
<p>Atlantic bluefin tuna (Thunnus thynnus), a highly migratory apex predator, utilize temperate feeding grounds to place their tissues into positive lipid balance following reproduction and subsequent migration to northern latitudes. Commercial fishermen target Atlantic bluefin tuna between June …
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A STUDY OF MEDITERRANEAN BLUEFIN TUNA (Thunnus thynnus L.) WITH REFERENCE TO STOCK IDENTIFICATION AND MANAGEMENT STRATEGIES
The management of bluefin tuna (Thunnus thynnus) in the north Atlantic has been based on the assumption that there are two separate stocks (an eastern Atlantic stock, including the Mediterranean Sea and a western Atlantic stock). This hypothesis has never been scientifically confirmed. This study …
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Experimental field studies and predictive modelling of PCB and PCDD/F levels in Australian farmed Southern Bluefin Tuna (Thunnus maccoyii).
Farmed Southern Bluefin Tuna (SBT) (Thunnus maccoyii) is an important export product for South Australia (SA). It is exported to Japan, China, Korea and the United States for the sushi and sashimi markets. The primary purpose of SBT farming in SA is to fatten wild-caught juvenile fish (2-4 years of …
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Distribution, growth, and transport of larval fishes and implications for population dynamics
… expectation. Chapter 3 presents evidence of tuna spawning inside a large no-take marine protected area, the Phoenix Islands Protected Area (PIPA). Despite variation in temperature and chlorophyll, the larval tuna distributions were similar amongst years, with skipjack (Katsuwonus pelamis) and …
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Application of a DNA Mini-Barcoding System based on the Mitochondrial Control Region for the Identification of Raw and Processed Tuna Products
… identification methods are needed to combat tuna fraud, improve tuna stock regulation, and mitigate health risks associated with mislabeled tuna products. The objective of this study was to conduct a market survey of raw and processed tuna products using a DNA mini-barcoding system based on …
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The evolution of virulence in Candida auris determined through experimental, ecological and epidemiological approaches
… plastic waste, including C. auris in Atlantic bluefin tuna (Chapter 4). I then examined the genotype of echinocandin refrac- tory clinical isolates, identifying features of heteroresistance and tol- erance associated with polyploidy (Chapter 5). Finally, I update the global genomic epidemiology …
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Behavioural Ecology of Large Tuna
… 400+ species (Chapter 2). It then uses Atlantic bluefin tuna (Thunnus thynnus, ABT), large migratory apex predators with exceptional physiological capacity, as a model system to examine behavioural responses to stressors operating across contrasting temporal scales. Chapter 3 documents an …
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The design of a self-propelled flexible hull undersea vehicle
… combination of maneuverability and efficiency. Bluefin Tuna, for example, are known to migrate long distances while also being able to perform high acceleration maneuvers and swim at speeds in excess of 100 km/hr. To achieve performance on par with biological swimmers, a machine must replicate …
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Genetic stock structure and estimation of abundance of swordfish (Xiphias gladius) in South Africa
… of 10-year long term rights to swordfish- and tuna-directed vessels. South Africa's swordfish catches reached a peak in 2002 at 1 187 t, and have been on the decline with average catches of 372 t over the last 5 years. South Africa straddles two ocean basins, the Indian and Atlantic Ocean and …