Dissertations / Theses on the topic 'Brown trout'
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O'Neal, Sarah Louise. "Lessons to learn from all out invasion life history of brown trout (Salmo trutta) in a Patagonian river /." Diss., [Missoula, Mont.] : The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-05142008-142539/.
Full textMeredith, Christy. "Factors influencing the distribution of brown trout (Salmo trutta) in a mountain stream: Implications for brown trout invasion success." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1324.
Full textPorter, Pamela E. "Comparison between the subsurface environment of brown trout (Salmo trutta) redd and nonredd sites in two North Carolina streams." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/101252.
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Duguid, R. A. "Population genetics and phylogeography of brown trout (Salmo truttal)." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269048.
Full textCarlsson, Jens. "Population genetic structure of brown trout in boreal ecosystems /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5884-6.pdf.
Full textStephen, Alastair B. "Genetic studies in Scottish brown trout (Salmo trutta L.)." Thesis, University of Stirling, 1987. http://hdl.handle.net/1893/2142.
Full textMcMeel, Oonagh Marie. "Molecular phylogenetics of brown trout (Salmo trutta L.) populations." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286857.
Full textHampton, Thomas M. "Effects of seasonal habitat limitations on the distribution and energetics of stocked salmonids in Lake Moomaw, Virginia." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-03032009-040959/.
Full textA-Kareem, H. M. "Structure and development of muscle in the rainbow trout (Salmo gairdneri) and the brown trout (Salmo trutta)." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376854.
Full textDalzell, David James Blair. "The toxicity of iron to the brown trout, Salmo trutta L." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337533.
Full textBembo, David Geraint. "The brown trout (Salmo trutta L.) of the River Usk system." Thesis, Cardiff University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364473.
Full textPinto, Carla Maria de Carvalho Batista. "Peroxissomas in Brown trout (Salmo trutta f. fario): regulation by estrogens." Doctoral thesis, Instituto de Ciências Biomédicas Abel Salazar, 2007. http://hdl.handle.net/10216/7256.
Full textPinto, Carla Maria de Carvalho Batista. "Peroxissomas in Brown trout (Salmo trutta f. fario): regulation by estrogens." Tese, Instituto de Ciências Biomédicas Abel Salazar, 2007. http://hdl.handle.net/10216/7256.
Full textAdriaenssens, Bart. "Individual variation in behaviour : personality and performance of brown trout in the wild /." Göteborg : Department of Zoology, Animal Ecology, University of Gothenburg, 2010. http://hdl.handle.net/2077/22217.
Full textEdwards, Denise. "Endocrine and physiological response to acid stress in brown trout (Salmo trutta)." Thesis, University of Hull, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328856.
Full textGustafsson, Pär. "Forest-stream linkages : experimental studies of foraging and growth of brown trout (Salmo trutta L.) /." Karlstad : Faculty of Social and Life Sciences, Biology, Karlstads universitet, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1649.
Full textMcGowan, Colin. "Genetic mapping in Atlantic salmon, Salmo salar, and brown trout, Salmo trutta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq23108.pdf.
Full textJonsson, Sara. "Stocking of brown trout (Salmo trutta L.) : factors affecting survival and growth /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/s230.pdf.
Full textSkjellevik, Stine Marie. "Growth and Movement in Brown Trout (Salmo trutta) in two Norwegian Rivers." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20118.
Full textDeverill, James Ian. "The post-stocking behaviour of hatchery-reared brown trout (Salmo trutta L.)." Thesis, University of Stirling, 2000. http://hdl.handle.net/1893/1875.
Full textGriffiths, Andrew Mark. "The population structure of brown trout (Salmo trutta) on Dartmoor National Park." Thesis, University of Exeter, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426139.
Full textMelin, Mattias. "Stream size determines densities of larger juvenile brown trout in mountain streams." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-183936.
Full textKristensen, Esben Astrup, and n/a. "Population dynamics, spawning and movement of brown trout in Taieri River tributary streams." University of Otago. Department of Zoology, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070314.091924.
Full textBravington, Mark. "The effects of acidification on the population dynamics of brown trout in Norway." Thesis, Imperial College London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270334.
Full textThompson, Caroline E. M. "Population genetics of anadromous brown trout (Salmo trutta L.) in Scotland and Ireland." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264309.
Full textResende, Albina Dolores Cardoso da Silva Castro. "Seasonal and toxicological study of brown trout (Salmo trutta) kidney and liver peroxisomes." Doctoral thesis, Instituto de Ciências Biomédicas Abel Salazar, 2008. http://hdl.handle.net/10216/7260.
Full textResende, Albina Dolores Cardoso da Silva Castro. "Seasonal and toxicological study of brown trout (Salmo trutta) kidney and liver peroxisomes." Tese, Instituto de Ciências Biomédicas Abel Salazar, 2008. http://hdl.handle.net/10216/7260.
Full textMiller, Roseanne. "Mating plasticity within a natural population of sea trout (Salmo trutta) and the effects of the Major Histocompatibility Complex on mate choice and survival." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=229730.
Full textNeary, James P. "Use of physical habitat structure to assess stream suitability for brown trout : a case study of three upland Scottish streams." Thesis, University of Stirling, 2006. http://hdl.handle.net/1893/209.
Full textSimmons, J. F. "Toxicity of zinc to the brown trout Salmo trutta L : Modification by external calcium and magnesium." Thesis, Nottingham Trent University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234755.
Full textOlson, Michael. "Downstream migration of brown trout (Salmo trutta) smolts past hydropowerplants in the river Emån." Thesis, Karlstad University, Division for Environmental Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-21.
Full textThe passage efficiency of downstream migrating brown trout (Salmo trutta) smolts past two hydropower plants in the River Emån, southeastern Sweden, was evaluated by telemetry. From 26 April to 17 May 2005, 40 wild brown trout smolts were radio-tagged, and their positions were recorded daily until 14 June. Approximately 45% of the individuals passed both power plants, and 15% made it to the sea, some 28 km downstream of the power plants. About 20% of the individuals ceased migrating, residing in a lotic habitat. Mortality due to predation was 33%, and the predation rate was higher in the power plant dams than it was downstream of the power plants. Turbine-induced mortality was greater in the upper power plant (40%) than in the lower one (13%). Fish that chose the alternative routes, through the gates, swam past the upper dam faster than fish that swam through the turbines. The results confirm previous work in the river, namely that measures need to be taken to improve passage efficiency past the power plants, particularly passage of the upper power plant. Such measures are of crucial importance if the nature-like bypass channels at the power plants in Finsjö are going to have any long-term effects on the brown trout population.
Passageeffektiviteten för nedströms vandrande havsöringssmolt (Salmo trutta) förbi två vattenkraftverk i Emån, i sydöstra Sverige, utvärderades med telemetri. Från 26 april till och med 17 maj 2005 märktes 40 vilda havsöringssmolt med radiosändare och de positionsbestämdes dagligen till och med 14 juni. Ungefär 45% av individerna passerade båda kraftverken, och 15% klarade sig till havet, cirka 28 km nedströms kraftverken. Omkring 20% av individerna avbröt vandringen och stannade i ett lotiskt habitat. Mortalitet på grund av predation uppgick till 33%, och predationshastigheten var högre i kraftverksdammarna än nedströms kraftverken. Den turbininducerade mortaliteten var högre i det övre kraftverket (40%) än i det nedre (13%). Det gick fortare att passera den övre kraftverksdammen för fisk som valde de alternativa rutterna, genom dammluckorna, jämfört med att passera genom turbinerna. Dessa resultat bekräftar tidigare studier i ån, nämligen att åtgärder krävs för att förbättra passageeffektiviteten förbi kraftverken, i synnerhet passagen av det övre kraftverket. Sådana åtgärder är av avgörande betydelse om de naturlika fiskvägarna vid kraftverken i Finsjö ska få några långsiktiga effekter på havsöringspopulationen.
Watz, Johan. "The effects of water temperature on foraging behavior of drift-feeding juvenile brown trout." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-3328.
Full textThe effect of water temperature prey capture success and foraging behavior of drift-feeding juvenile brown trout (Salmo trutta) was examined in a laboratory stream. Water temperature treatments were 5.7, 6.7, 8.0, 10, 12 and 14°C. Five wild brown trout, age 1+ and collected by electrofishing from a stream in Western Sweden, were used in the experiments. There was a significant effect of water temperature on both prey capture probability and the percentage of time spent resting on the substrate while drift-feeding. At low water temperatures the fish suffered a reduced prey capture capability and spent more time resting on the substrate in between the excursions to capture drifting prey. Temperature did not significantly affect the amount of time fish spent foraging holding a station in the current versus active searching. Significant positive correlations were found between holding a station and prey capture probability at four out of the six different water temperature treatments.
Jonsson, David. "Temperature dependent competitive interactions between Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta)." Thesis, Umeå University, Ecology and Environmental Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-27799.
Full textBattram, J. C. "Chloride balance in the brown trout Salmo trutta L. in neutral and acidified waters." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373479.
Full textSaarinen, Claesson Per. "Survival of brown trout fry in nature: effects of activity, body size and starvation." Thesis, Linköpings universitet, Biologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-109488.
Full textProdöhl, Paulo A. "Multilocus and single locus minisatellite DNA polymorphism in brown trout (Salmo trutta L.) populations." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296801.
Full textParis, Josephine Rosanna. "Brown trout and toxic metals : local adaptation to the legacy of Britain's mining history." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/29554.
Full textUren, Webster Tamsyn. "Investigating mechanisms of environmental chemical tolerance and toxicity in brown trout using RNA-seq." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/14886.
Full textEnefalk, Åsa. "Effects of fine woody debris on juvenile brown trout (Salmo trutta) and drifting invertebrates." Licentiate thesis, Karlstads universitet, Institutionen för miljö- och livsvetenskaper (from 2013), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31672.
Full textArtikel 1 ingick i avhandlingen som manuskript med titeln "Effects of fine wood addition on invertebrate drift in boreal forest streams". Nu publicerad.
Enefalk, Åsa. "Fine stream wood : effects on drift and brown trout (Salmo trutta) growth and behaviour." Doctoral thesis, Karlstads universitet, Institutionen för miljö- och livsvetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-44537.
Full textStream ecosystems and their riparian zones have previously been regarded as two different ecosystems, linked through numerous reciprocal subsidies. Today, ecologists agree that the stream and the riparian zone should be regarded as one system, the stream-riparian ecosystem, which is characterised largely by the subsidies between land and water. In this doctoral thesis, I explore one such subsidy – the input of fine stream wood (FW) to streams. Wild stream-living young-of-the-year brown trout (Salmo trutta) was chosen as study species. My results show that the local density of drifting prey is higher in the presence of FW than in its absence, and that young-of-the-year brown trout decrease their diurnal foraging time and prey capture success when FW is added to their habitat. I show that trout decrease their activity in the presence of FW, aggregate in FW bundles, and have lower growth rates than trout without FW access. Taken together, my results indicate that young-of-the-year brown trout spend considerable amounts of time in FW bundles, and by doing so they miss the opportunity for higher growth and foraging rates outside of the shelter. The most probable explanation for this behaviour is that growth is traded off against survival.
Artikel 3 publicerades i avhandlingen som manuskript med samma titel.
Louhi, P. (Pauliina). "Responses of brown trout and benthic invertebrates to catchment-scale disturbance and in-stream restoration measures in boreal river systems." Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514263217.
Full textMäki-Petäys, A. (Aki). "Habitat requirements of juvenile salmonids:towards ecologically-based fisheries management in boreal streams." Doctoral thesis, Oulun yliopisto, 1999. http://urn.fi/urn:isbn:9514252209.
Full textGustafsson, Pär. "Forest-stream linkages : Experimental studies of foraging and growth of brown trout (Salmo trutta L)." Licentiate thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1649.
Full textRiparian vegetation along streams and rivers affects the aquatic community in numerous ways and often operates as a link for energy flux between forest and streams. The studies presented in this licentiate thesis focus on light and terrestrial invertebrates, two factors influenced by riparian zone structure, which potentially affect stream ecosystems and thus also brown trout (Salmo trutta). Paper I is a laboratory experiment where I study size dependent foraging behavior on surface-drifting terrestrial invertebrates and benthic invertebrates by brown trout. The results show a size-dependent difference in foraging ability with large trout being better able to use terrestrial surface prey than small trout. I argue that such ontogenetic foraging differences are due to both morphological constraints (eg. gape limitation) and size dependent behavioral differences related to predation risk. Paper II consists of a 5 month-long 2x2 factorial design field experiment where my objective was to examine the effects of terrestrial invertebrate input and solar radiation (PAR) on different trophic levels in a boreal headwater stream. More specifically, I followed the effects of increased light and decreased terrestrial invertebrate subsidies on periphyton, benthic macroinvertebrates and two size classes of the top fish predator, brown trout. The results showed that the reduction of terrestrial invertebrate input had size- and seasonal-dependent effects on trout, where large trout had lower growth rates than small trout, mainly in summer. Diet analyses of trout supported growth differences in that large trout in unmanipulated enclosures consumed relatively more terrestrial prey than large trout living in enclosures with reduced terrestrial inputs. A higher reliance on terrestrial prey subsidies by large trout compared to small may be explained by ontogenetic differences in foraging and habitat choice. Despite a 2.5-fold increase in PAR, light did not have an effect on chlorophyll a biomass, nor was there an effect on the density or composition of benthic macroinvertebrates. The lack of effects on primary production may be explained by very low nutrient levels in the stream.
Brelin, Daniel. "Stress Coping Strategies in Brown Trout (Salmo Trutta): Ecological Significance and Effects of Sea-Ranching." Doctoral thesis, Uppsala universitet, Jämförande fysiologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8591.
Full textGustafsson, Pär. "Forest – stream linkages : Brown trout (Salmo trutta) responses to woody debris, terrestrial invertebrates and light." Doctoral thesis, Karlstads universitet, Avdelningen för biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-6731.
Full textHiggins, David Ian. "Catchment scale influences on brown trout fry populations in the Upper Ure catchment, North Yorkshire." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/3571/.
Full textBrown, Richard S. "Winter ecology of brown trout, white sucker and common carp in the Grand River, Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0027/NQ51182.pdf.
Full textCollins, Simon. "Branchial toxicity of aluminium in soft acidic water in the brown trout, Salmo trutta L." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364458.
Full textBengtson, Johanna. "The relationship between behaviour and metabolic rate of juvenile Brown trout Salmo trutta." Thesis, Karlstads universitet, Fakulteten för samhälls- och livsvetenskaper, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4114.
Full textDiamond, Sian. "Mechanisms and consequences of hybridisation between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)." Thesis, University of East Anglia, 2012. https://ueaeprints.uea.ac.uk/42390/.
Full text