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 64 for “"Salar"”.
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Repeat spawning of the Atlantic salmon (Salmo salar) in various salmon rivers in Iceland
Information on repeat spawning in Atlantic salmon stocks from eight various rivers in Iceland was analyzed, using data collected by the Institute of Freshwater Fisheries in Iceland. The rivers differ in characteristics as well as location based on bedrock and geographical area. Available data from …
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Assessing the welfare of adult Atlantic salmon, Salmo salar during commercial live-haul transport
… MO₂ measured in adult Atlantic salmon, Salmo salar held in large tanks and also to resting MO₂ of individual Pacific salmonids measured in swim-respirometers. These results indicate a low level of stress, and suggest that open-hold live-haul transport aboard the Sterling Carrier does not …
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Dynamics of the atlantic salmon (Salmo salar L.) population of the River Foyle, Ireland
… the dynamics of the Atlantic salmon (Salmo salar L.) population of the Foyle catchment in Ireland, through the analysis of long-term datasets and extensive field data. In chapter 1 the current conservation status of the salmon is discussed with particular reference to the Foyle. Chapter 2 …
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Within- and among-individual variation in metabolic rate in juvenile Atlantic salmon, Salmo salar
Animals may adopt a range of energy strategies to persist and perhaps prosper under various prevailing environmental conditions. For example, they may achieve similar growth by investing heavily in maintaining a high capacity food capture and processing system or by using a lower capacity system …
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Variations annuelles du poids moyen des captures sportives de saumon atlantique Salmo salar (Linné) gaspésien
… élevé de grands saumons atlantiques (Salmo salar) qui retournent dans ses rivières (deux hivers marins, trois hivers marins et plusieurs hivers marins) de l'Atlantique (Salmo salar). Les variations du poids moyen et du nombre de grands saumons dans les cours d'eau de Gaspé ont été étudiées à …
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Mechanisms and consequences of hybridisation between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)
… system of Atlantic salmon, Salmo salar, and brown trout, S. trutta, to investigate mechanisms of hybridisation through sperm-egg interactions, much of which is poorly understood. Salmon and trout experience conspecific sperm precedence during in vitro sperm competition experiments, …
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Seawater survival and osmoregulation of Atlantic salmon (Salmo salar) parr-smolts exposed to four different pesticides
Atlantic salmon (Salmo salar) parr-smolts were exposed to sublethal concentrations of cypermethrin, chlorothalonil, quintozene or atrazine to determine if they affected osmoregulation. After 96 h of exposure to a pesticide, Na+K+-ATPase, hematocrit, liver somatic index (LSI), plasma sodium, …
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Climate Change and Atlantic salmon (Salmo salar): Changes in Flow and Freshwater Habitat in the Burrishoole Catchment
… the freshwater habitat of Atlantic salmon (Salmo salar) and the long-term sustainability of their population numbers. The Burrishoole catchment, a relatively small but productive salmon catchment (~90 km2) located on Ireland’s west coast, is used as a case study to investigate this. A series of …
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The study of molecular variation in Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.)
… were used here in three studies, one on Salmo salar and two on S. trutta. In the case of S. salar, the survival of native fish and non-natives from a nearby catchment, and their hybrids, were compared in a freshwater common garden experiment and subsequently in ocean ranching, with parental …
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Social network analysis of behavioural interactions influencing the development of fin damage in Atlantic salmon (Salmo salar)
The development of fin damage in Atlantic salmon parr was investigated using social network analysis of behavioural interactions occurring under different feeding and stocking conditions. Four separate experiments were carried out in which groups of fish were subjected to a long food restriction …
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The stress of moving out : physiological and behavioural effects of commercial transport on Atlantic salmon (Salmo salar) smolts
Despite the controversy over environmental sustainability, salmon aquaculture in British Columbia is economically important for many coastal communities and is reported as being the largest agricultural export product for the province. This thesis examined the welfare status of commercially …
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Predicting how the juvenile life-stages of anadromous Atlantic salmon Salmo salar influence their migration phenology and marine survival.
Atlantic salmon, Salmo salar (hereafter ‘salmon’), is a species of high commercial, recreational, and cultural importance. Native to rivers of both sides on the North Atlantic basin, this species has experienced dramatic population declines since the 1970s. The reasons for this phenomenon are …
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Tufa-based reconstructions of Huasco Basin Lake levels
This thesis investigates the Salar del Huasco (northern Chile) as a potential site for palaeohydrological reconstructions of precipitation over the South American Altiplano, and presents a preliminary lake level chronology for the last deglaciation. Resolving the timings of past lake level …
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From landscape to freshwater invertebrates: understanding the effects of peatland restoration on Atlantic Salmon (Salmo salar) habitat in the Flow Country
… particularly regarding Atlantic Salmon (Salmo salar) populations that inhabit many peatland-dominated upland river catchments. This study examines the effects of two common peatland restoration techniques, drain blocking and forest-to-bog, within the Flow Country blanket bog. We focused on how …
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La réponse immunitaire du saumon atlantique (Salmo Salar) suite à une infection par le virus de l'anémie infectieuse du saumon
… le saumon de l'Atlantique d'élevage (Salmo salar) et entraîne une perte de revenus de plusieurs millions de dollars pour les salmoniculteurs. Bien que l'amélioration des pratiques de gestion et d'élevage au cours des dernières années ait permis de minimiser les pertes et le nombre …
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The allometry of territory size and metabolic rate as predictors of self-thinning in young-of-the-year Atlantic salmon (Salmo salar)
… for young-of-the-year Atlantic salmon (Salmo salar) in Catamaran Brook, New Brunswick, throughout their first growing season. In general, the results were consistent with the predictions of the territory-size hypothesis since the observed densities were high enough to expect competition for …
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A Reconstruction of Precipitation and Hydrologic Variability on the Peruvian and Bolivian Altiplano During the Late Quaternary
… lakes in the terminal basin occupied by the Salar de Uyuni and the Salar de Coipasa. </p><p>Presented here are the results from three studies that utilize different methods to create a refined reconstruction of paleohydrology, as well as paleoclimate, on the Altiplano. A major goal of this …
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Estudio y comportamiento de la interfaz salina en medios porosos considerando densidad variable: caso estudio: acuífero del Salar de Atacama, II Región de Antofagasta, Chile
… a la modelación hidrogeológica de un sistema salar real, específicamente en el sector sur del Salar de Atacama, Región de Antofagasta, Chile. Para ello, se recopila la información pública disponible en la plataforma del Servicio de Evaluación Ambiental, Ministerio del Medio Ambiente, Gobierno …
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Caracterización y cuantificación de los procesos de transporte-reacción que dominan la dinámica intradiaria de dióxido de carbono y oxígeno en el Salar del Huasco
Los salares se ubican típicamente en la región altiplánica andina de Chile, Perú y Bolivia. Los sistemas acuáticos formados en ellos, corresponden usualmente a lagunas extremadamente someras, sometidas a condiciones ambientales desfavorables como bajo oxígeno atmosférico, alta oscilación térmica, …
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