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 49 for “"Atlantic salmon"”.
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Thyroid in intestinal development during atlantic salmon smoltification
Atlantic salmon (Salmo salar L.) has a complex lifecycle. It starts its life in FW, grows, and after several changes at behavioral, morphological, and physiological levels, a process called smoltification, the fish migrate downstream to the sea. During this process of seawater (SW) acquisition, the …
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Atlantic salmon dynamics in the Foyle catchment (Ireland), a Bayesian approach
… modelling. In this study, I examined a large Atlantic salmon population located in the Foyle catchment (Ireland). This population has been exploited for several centuries and particularly during the 20th century. This study focused on the period from 1959 to present for which most monitoring …
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The marine life of Atlantic salmon: evidence from the chemistry of scales
… retrospectively from tissue archives. The wild Atlantic salmon has been in steep decline throughout its native range over the past four decades, largely due to increases in marine mortality. This research investigated potential causes of this decline using stable isotope analysis of archived …
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Spatial and temporal genetic variation in small and declining populations of Atlantic salmon
Atlantic salmon is protected under national and European legislation but most populations are declining. The research investigated population size, habitat quality, population structure and stability over time using Atlantic salmon parr in the River Frome (a chalk stream in Dorset, England) …
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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
… stress as in indicator of welfare of adult Atlantic salmon during transport onboard a commercial live-haul vessel, the Sterling Carrier under actual operational conditions. This state-of-the-art vessel incorporates both flow-thru (open-hold) and re-circulating (closed-hold) live-hold …
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Dynamics of the atlantic salmon (Salmo salar L.) population of the River Foyle, Ireland
This study examines 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. …
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Within- and among-individual variation in metabolic rate in juvenile Atlantic salmon, Salmo salar
… between behaviour and aspects of performance. Atlantic salmon have been an important model for exploring relationships between growth performance, metabolic strategies and individual behaviour. Juvenile salmonid fish have been a particularly useful subject for exploring individual variation in …
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Mechanisms and consequences of hybridisation between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)
… externally-fertilising 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 …
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The spatial scale of adaptive population differentiation in Atlantic Salmon: local adaptation in smolt migration timing
… for local adaptation in migratory behaviour of Atlantic salmon. Specifically, it aims to examine variation in the timing of smolt migration among independent tributaries of single river systems and to screen individual fish for molecular genetic variation at neutral microsatellite loci. Through …
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Climate Change and Atlantic salmon (Salmo salar): Changes in Flow and Freshwater Habitat in the Burrishoole Catchment
… consequences for 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 …
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The study of molecular variation in Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.)
… basis and suggest local adaptation can occur in salmonids across relatively small geographic distances which may have important implications for the management of salmon populations. In the first case study with S trutta, the species was investigated throughout its spread as an invasive in …
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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
… 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 produced …
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Evaluating the efficacy of brewers’ yeast-derived functional feed additives in mitigating soybean meal-induced enteritis in Atlantic salmon
… without compromising intestinal health. In Atlantic salmon aquaculture, one of the main constraints to plant protein inclusion is soybean meal-induced enteritis (SBMIE), a diet-related inflammatory condition that impairs mucosal function. Meanwhile, the use of functional feed additives such …
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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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From landscape to freshwater invertebrates: understanding the effects of peatland restoration on Atlantic Salmon (Salmo salar) habitat in the Flow Country
… on freshwater ecology, 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 …
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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)
… and population density 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 …
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Building an In-vitro Cell Model to Study Cellular Basis of Maturation Timing: A Proof of 3D Cell Culture Methodology in Atlantic Salmon Adipose Tissue
… A potential implementation of this method in Atlantic salmon is to elucidate the molecular function of the vestigial-like 3 (vgll3) gene, which plays a central role in salmonid maturity, potentially by regulating energy allocation via regulating adipogenesis. In this thesis, a proof of …
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