Download or read book Identifying Competitive Interactions Between Atlantic Salmon Salmo Salar and Junvenile Brown Trout Salmo Trutta and Their Implications for Conservation of the Freshwater Pearl Mussel Margaritifera Margaritifera written by Larisa Lewis and published by . This book was released on 2018 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Competitive Interactions Between Brown Trout Salmo Trutta L and Juvenile Atlantic Salmon Salmo Salar L in Rivers of the Avalon Peninsula Newfoundland written by Canada. Dept. of Fisheries and Oceans. Newfoundland Region. Science Branch and published by St. John's, Nfld. : Fisheries and Oceans, Canada. This book was released on 1986 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intra and Inter specific Competition Among Juvenile Atlantic Salmon Salmo Salar L and Brown Trout Salmo Trutta L written by Andrew Harwood Harwood and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Relationships Between Movement and Density for Brown Trout Salmo Trutta and Juvenile Atlantic Salmon Salmo Salar in a Coastal Stream in North Norway written by Trygve Hesthagen and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nature like Fish for Release written by and published by . This book was released on 2005 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brown Trout written by Javier Lobón-Cerviá and published by John Wiley & Sons. This book was released on 2017-12-18 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.
Download or read book 1 The Introduction of Juvenile Atlantic Salmon Salmo Salar L on Resident Brown Trout Salmo Trutta L Populations in a Nursery Stream written by Michelle Elizabeth Glynn Rice and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Mapping in Atlantic Salmon Salmo Salar and Brown Trout Salmo Trutta written by Colin McGowan and published by . This book was released on 1996 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interspecific competition between juveniles of brown tout SALMO TRUTTA and Atlantic salmon SALMO SALAR in a nursery stream of Northern Brittany written by P. Prouzet and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Water Temperature on Early Life History Juvenile Growth and Prespawning Migrations of Atlantic Salmon Salmo Salar and Brown Trout Salmo Trutta written by Arne Johan Jensen and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactive Segregation Between Juvenile Atlantic Salmon Salmo Salar and Rainbow Trout Salmo Gairdneri in Experimental Stream Channels written by Walter Andrew Popp and published by . This book was released on 1988 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Ecology and the Brown Trout written by J. M. Elliott and published by Oxford University Press, USA. This book was released on 1994-02-17 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides, for the first time, a synthesiws of quantitative information on the ecology of the brown trout, including sea-trout, and comparisons with closely related species such as the Atlantic salmon, Pacific salmon, and rainbow trout. Much of this work, especially the case studies, is relevant to general problems in quantitative animal ecology as well as to fisheries management. One theme emphasized throughout is the development, testing, and use of realistic mathematical models as important tools for conservation and management of fish and other animals. - ;Covering not only brown trout, but also their close relatives, this book provides valuable information which is also relevant to animal ecology. The book highlights the global success of the species and provides a long-term case study of population dynamics of one population. It also considers growth and energetics, ecological differences between brown trout populations, natural selection and genetic differences between brown trout, and the mechanisms responsible for population regulation in juvenile trout. Emphasizing the value of such long-term studies to species management and conservation, the book stresses the importance of development, testing and use of realistic models when considering species such as brown trout. -
Download or read book Mechanisms and Consequences of Hybridisation Between Atlantic Salmon Salmo Salar and Brown Trout Salmo Trutta written by Sian Diamond and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Relatively little research has been done to investigate the way postcopulatory, prezygotic mechanisms act to isolate species at the level of the gamete. This thesis uses the naturallyhybridising, 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 competition experiments, when sperm volumes and release times are equalised. This thesis firstly aimed to explore the dynamics of gametic interactions underlying this reproductive isolation. Manipulating the sperm entry time in interspecific sperm competitions significantly influenced the observed conspecific sperm precedence. A 2 second delay to the entry of conspecific sperm did not give hybridising males first-male sperm precedence, but neither did they gain precedence with paternity being shared between males; suggesting a mechanism of selection for conspecific sperm. Selection mechanisms were investigated through in vitro sperm competitions where egg ovarian fluid type was manipulated. Results showed that conspecific ovarian fluid allowed conspecific sperm significantly higher fertilisation success when competing against heterospecific sperm, regardless of which species eggs were under competition. This is the first evidence for cryptic female choice via a reproductive fluid in an external fertiliser. The second objective of my thesis was to investigate the potential consequences of salmon-trout hybridisation for wild populations. This was achieved through comparing the early life and reproductive fitness of hybrids and pure species. Both reciprocal hybrid crosses had comparable early life fitness to pure species. Importantly however, neither reciprocal cross exceeded pure juveniles for any fitness measures. This suggests the replacement of parental species by hybrids is unlikely. Both hybrid crosses were capable of producing viable sperm and able to fertilise over 50% of both salmon and trout eggs. Neither cross gained paternity success when competing for trout eggs with conspecific males, while very low paternity was gained under sperm competition with Atlantic salmon for salmon eggs. The main threat posed by hybridisation to vulnerable salmon populations appears to come from wasted reproductive effort, through the production of reproductively unfit hybrids. The implications of this are discussed.
Download or read book A comparison of the effects of overhead cover on the growth survival and haematology of juvenile Atlantic salmon Salmo salar L brown trout Salmo trutta L and rainbow trout Salmo gairdneri Richardson written by A D (Alan) Pickering and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Investigations written by Craig Goch Joint Committee and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Competition Between Juvenile Atlantic Salmon Salmo Salar and Rainbow Trout S Gairdneri in the White River of Vermont written by William Ernest Hearn and published by . This book was released on 1985 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
