Assessment Of Altered Rearing Environments On Survival And Performance Of Hatchery Reared Trout

Download Assessment Of Altered Rearing Environments On Survival And Performance Of Hatchery Reared Trout full books in PDF, epub, and Kindle. Read online Assessment Of Altered Rearing Environments On Survival And Performance Of Hatchery Reared Trout ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Assessment of Altered Rearing Environments on Survival and Performance of Hatchery-reared Trout

Author : Clinton James Smith
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (766 download)

DOWNLOAD NOW!

Book Synopsis Assessment of Altered Rearing Environments on Survival and Performance of Hatchery-reared Trout by : Clinton James Smith

Download or read book Assessment of Altered Rearing Environments on Survival and Performance of Hatchery-reared Trout written by Clinton James Smith and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reintroduction of native fish stocks is an important management tool used to mitigate the effects of invasive species and loss of habitat. A common reintroduction tool is the use of hatchery fish to create or supplement native populations in areas of their historic range. However, the low survival and poor performance of some hatchery outplants is an issue for hatchery reintroductions, as broodstocks may be limited. As a result, there has been a recent effort to develop 'conservation hatcheries' that employ hatchery rearing strategies that might improve the effectiveness of hatchery reintroduction efforts. This study developed and evaluated the effectiveness of enriched hatchery rearing strategies on increasing effectiveness of hatchery reintroductions for inland salmonids. Three hatchery rearing treatments of varying complexity were developed for rearing trials using westslope cutthroat trout Oncorhynchus clarkii lewisi and rainbow trout Oncorhynchus mykiss. Fish were reared in the hatchery for 60 days and various performance assessments were compared to evaluate behavioral, morphological, and physiological differences among the rearing treatments. A second 60 day rearing period using westslope cutthroat trout was followed by an outplant assessment. Fish were reared in the same three hatchery treatments and at the end of the hatchery-rearing period fish were placed into rearing ponds. Outplanted fish were left in the ponds with no artificial feed or predation relief. After 2 months in the ponds, fish were removed and their survival and growth were analyzed. Growth and survival in the hatchery were similar among the rearing treatments for both species. The most complex treatment was associated with increased cover seeking behavior, reduced aggression, higher fin condition, and improved coloration. Survival results from the outplanted fish were compromised because of fish movement; however, there was evidence that the most complex treatment may have performed better as suggested by growth data and proximate analysis of lipid content. Our results suggest that alterations to the hatchery environment may improve the effectiveness of native species reintroduction efforts using hatchery-reared fish. Further research is needed to assess additional hatchery-rearing environment alterations as well as the long-term effects such alterations might have on hatchery outplanted fish.

Effect of Enrichment in the Hatchery on the Performance of Brook Trout and Atlantic Salmon

Author : Bryan Ferguson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (915 download)

DOWNLOAD NOW!

Book Synopsis Effect of Enrichment in the Hatchery on the Performance of Brook Trout and Atlantic Salmon by : Bryan Ferguson

Download or read book Effect of Enrichment in the Hatchery on the Performance of Brook Trout and Atlantic Salmon written by Bryan Ferguson and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish stocking has been an important tool utilized by fisheries professionals for many decades. Byartificially spawning and rearing fish in a controlled hatchery environment, it is possible toproduce large numbers of fish that have a high survival rate while in the hatchery. This methodcan result in thousands of fish available for supplementing or reestablishing fisheries. However,many of these fish do not survive when stocked into the wild. If you compare the environments in which we raise fish for stocking and the environments we expect them to survive in, there are many apparent differences. Previous research suggests that hatchery fish exposed to altered rearing environments behave more flexibly. Fish raised in plain hatchery environments have little exposure to complex environments that more closely resemble natural streams and lakes. By creating environmental complexity and variability during a fish's residence in a hatchery environment, fish may have the ability to learn and alter behavior in ways that increase post-stocking survival. Here I investigate the addition of variability in the environment of hatchery reared brook trout (Salvelinus fontinalis) and Atlantic salmon (Salmo salar), by assessing behavioral changes and post-stocking survival in several Adirondack lakes. My findings show several changes in behavior prior to stocking, as well as a survival advantage in a controlled laboratory setting. However, it did not result in increased recapture rates when the brook trout and Atlantic salmon were stocked into Adirondack lakes and ponds.

Movement Dynamics and Survival of Hatchery-reared Colorado River Cutthroad Trout Post-stocking

Author : Alexander G. LeCheminant
Publisher :
ISBN 13 : 9781392201343
Total Pages : 91 pages
Book Rating : 4.2/5 (13 download)

DOWNLOAD NOW!

Book Synopsis Movement Dynamics and Survival of Hatchery-reared Colorado River Cutthroad Trout Post-stocking by : Alexander G. LeCheminant

Download or read book Movement Dynamics and Survival of Hatchery-reared Colorado River Cutthroad Trout Post-stocking written by Alexander G. LeCheminant and published by . This book was released on 2019 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isolation-reintroduction management (IRM) is commonly used to establish and maintain native fish populations threatened by hybridization and or competition with non-native fishes. IRM requires restriction of further invasion via fish barriers, followed by eradication of extant non-natives and reintroduction of native fish stock. IRM success, defined by establishment of self-sustaining populations, remains variable in the literature. I assessed factors potentially affecting reintroduction success of juvenile Colorado River cutthroat trout (CRCT) in a large IRM watershed experiencing historically low survival and recruitment post-stocking. I evaluated the potential for increasing post-stocking survival using progeny from a single, wild source population, through 1) exposure to differing ex situ rearing strategies pre-release and 2) initial exposure to differing habitat types during stocking. I also quantified apparent loss via permanent emigration. Using passive integrated transponder tags, I conducted a 3-year mark-recapture study to model annual survival probability relative to multiple stocking and rearing regimes. Survival probability was highest for fish minimally exposed to ex situ rearing conditions, stocked in small, headwater stream reaches. However, maximum survival probabilities remained low (≤0.138 ± 0.015) regardless of rearing treatment, stocking location or interactive effects between covariates. Additionally, I found emigration to be a non-limiting factor as only 11 individuals were recovered beyond the terminus of the reclaimed watershed. My analysis suggests variation in stocking and rearing strategy may have some effect on translocation success, however, consistently low survival probabilities may be indicative of a larger issue, requiring evaluation of adaptive potential within the source population.

The Effect of Environmental Enrichment on Agility, Exploration and Anxiety Levels of Hatchery-reared Fish

Author : Leah Giralico
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (951 download)

DOWNLOAD NOW!

Book Synopsis The Effect of Environmental Enrichment on Agility, Exploration and Anxiety Levels of Hatchery-reared Fish by : Leah Giralico

Download or read book The Effect of Environmental Enrichment on Agility, Exploration and Anxiety Levels of Hatchery-reared Fish written by Leah Giralico and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In an attempt to battle the negative effects of habitat degradation and over-exploitation on wild fish populations, researchers have begun to look to hatcheries as a component of ex-situ conservation. Hatcheries are utilized as breeding grounds for fish, which are ultimately released as a way to bolster and help maintain wild populations Unfortunately, released fish often display behavioral deficits and are unable to function as effectively as their wild counterparts, with large proportions of released fish lost to mortality. It is hypothesized that poor post-release survival arises because of adaptation to captivity, relaxed natural selection in the captive breeding environments, and the experience of being maintained in a safe, unchanging captive environment. This thesis project examined the potential benefits of environmental enrichment in a captive breeding environment on the behavior and swimming performance of rainbow trout (Oncorhynchus mykiss). Trout aged 11 months, were exposed to environmental enrichment by adding and exposing the fish to different kinds of novel objects, such as plastic models of aquatic weeds, PVC pipes, and floating plants that provided the fish with areas to explore, hide and interact. After two months of enrichment, the fish were tested in an Open Field Novel Object Test to assess their explorative nature, levels of anxiety and their overall swimming agility. These assays revealed that compared to fish reared in standard hatchery conditions, the trout reared in enriched conditions showed a lower level of anxiety and a higher level of activity. The enriched fish were also more explorative, but there were no clear effects on swimming performance and the fish were not significantly more agile in terms of the number of collisions the fish made within the test tank walls.

An Assessment of Ecosystem Components in the Interior Columbia Basin and Portions of the Klamath and Great Basins

Author :
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.3/5 (121 download)

DOWNLOAD NOW!

Book Synopsis An Assessment of Ecosystem Components in the Interior Columbia Basin and Portions of the Klamath and Great Basins by :

Download or read book An Assessment of Ecosystem Components in the Interior Columbia Basin and Portions of the Klamath and Great Basins written by and published by . This book was released on 1997 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Conservation Physiology for the Anthropocene - A Systems Approach

Author :
Publisher : Academic Press
ISBN 13 : 0128242671
Total Pages : 512 pages
Book Rating : 4.1/5 (282 download)

DOWNLOAD NOW!

Book Synopsis Conservation Physiology for the Anthropocene - A Systems Approach by :

Download or read book Conservation Physiology for the Anthropocene - A Systems Approach written by and published by Academic Press. This book was released on 2022-10-21 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation Physiology for the Anthropocene: A Systems Approach, Volume 39A in the Fish Physiology series, is a comprehensive synthesis on the physiology of fish in the Anthropocene. This volume closes the knowledge gap by considering the many ways in which different physiological systems (e.g., sensory physiology, endocrine, cardio-respiratory, bioenergetics, water and ionic balance and homeostasis, locomotion/biomechanics, gene function) and physiological diversity are relevant to management and conservation. As the world is changing, with a dire need to identify solutions to the many environmental problems facing wild fish populations, this book comprehensively covers conservation physiology and its future techniques. Conservation physiology reveals the many ways in which environmental change and human activities can negatively influence wild fish populations. These tactics inform new management and conservation activities and help create the necessary conditions for fish to thrive. - Presents authoritative contributions from an international board of authors, each with extensive expertise in the conservation physiology of fish - Provides the most up-to-date information on the ways in which different physiological systems are relevant to the management and conservation of fish and fisheries - Identifies how anthropogenic stressors perturb physiological systems - Explores how different physiological systems can be exploited to solve conservation problems

Canadian Journal of Fisheries and Aquatic Sciences

Author :
Publisher :
ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.:/5 (31 download)

DOWNLOAD NOW!

Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :

Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2012 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Salmon Aquaculture

Author : Knut Heen
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Salmon Aquaculture by : Knut Heen

Download or read book Salmon Aquaculture written by Knut Heen and published by John Wiley & Sons. This book was released on 1993-12-14 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to the responsible development of salmon aquaculture to the mutual benefits of all resources and individuals affected by this industry. Geographic distribution, approaches to problems of rearing in open and closed marine systems, techniques dealing with transportation and feeding, consequences of environmental factors on aquaculture and regulations and economic considerations are among the issues discussed.

Proceedings

Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Proceedings by :

Download or read book Proceedings written by and published by . This book was released on 2005 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fish Behaviour

Author : Carin Magnhagen
Publisher : CRC Press
ISBN 13 : 1439843023
Total Pages : 662 pages
Book Rating : 4.4/5 (398 download)

DOWNLOAD NOW!

Book Synopsis Fish Behaviour by : Carin Magnhagen

Download or read book Fish Behaviour written by Carin Magnhagen and published by CRC Press. This book was released on 2008-01-09 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fishes are by far the most species-rich vertebrate taxon, and it is also the vertebrate group with the most strikingly diverse repertoire of behaviours and behavioural adaptations. As such, they provide us with many opportunities to explore the fascinating complexities of animal behaviour. Central questions addressed in this book include: How do se

Ecology of Atlantic Salmon and Brown Trout

Author : Bror Jonsson
Publisher : Springer Science & Business Media
ISBN 13 : 9400711891
Total Pages : 720 pages
Book Rating : 4.4/5 (7 download)

DOWNLOAD NOW!

Book Synopsis Ecology of Atlantic Salmon and Brown Trout by : Bror Jonsson

Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer Science & Business Media. This book was released on 2011-05-03 with total page 720 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.

Cooperative Units Program, Fishery and Wildlife

Author : U.S. Fish and Wildlife Service. Office of Cooperative Research Units
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (319 download)

DOWNLOAD NOW!

Book Synopsis Cooperative Units Program, Fishery and Wildlife by : U.S. Fish and Wildlife Service. Office of Cooperative Research Units

Download or read book Cooperative Units Program, Fishery and Wildlife written by U.S. Fish and Wildlife Service. Office of Cooperative Research Units and published by . This book was released on 1983 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Isozymes

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (77 download)

DOWNLOAD NOW!

Book Synopsis Isozymes by :

Download or read book Isozymes written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cooperative Research Units, Fishery and Wildlife, Annual Report

Author : U. S. Fish and Wildlife Service. Division of Cooperative Research
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Cooperative Research Units, Fishery and Wildlife, Annual Report by : U. S. Fish and Wildlife Service. Division of Cooperative Research

Download or read book Cooperative Research Units, Fishery and Wildlife, Annual Report written by U. S. Fish and Wildlife Service. Division of Cooperative Research and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Progressive Fish-culturist

Author :
Publisher :
ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.:/5 (319 download)

DOWNLOAD NOW!

Book Synopsis The Progressive Fish-culturist by :

Download or read book The Progressive Fish-culturist written by and published by . This book was released on 1949 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Stock Enhancement and Sea Ranching

Author : Kenneth M. Leber
Publisher : John Wiley & Sons
ISBN 13 : 0470751312
Total Pages : 584 pages
Book Rating : 4.4/5 (77 download)

DOWNLOAD NOW!

Book Synopsis Stock Enhancement and Sea Ranching by : Kenneth M. Leber

Download or read book Stock Enhancement and Sea Ranching written by Kenneth M. Leber and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collapse of many of the World’s fisheries continues to be of major concern and the enhancement of fish stocks through techniques such as ranching is of huge importance and interest across the globe. This important book, which contains fully peer reviewed and carefully edited papers from the 2nd International Symposium in Stock Enhancement and Sea Ranching is broadly divided into sections covering the following areas: The present situation of stock enhancement Seed quality and techniques for effective stocking Health management of hatchery stocks Methods for evaluating stocking effectiveness Population management in stock enhancement and sea ranching Management of stocked populations Ecological interactions with wild stocks Genetic management of hatchery and wild stocks Socio-economics of stock enhancement Case studies Stock Enhancement and Sea Ranching has been written and edited by some of the world’s foremost authorities in fisheries science and related areas and is essential reading for all fisheries scientists throughout the World. Fish biologists, marine and aquatic scientists, environmental biologists, ecologists, conservationists, aquaculture personnel and oceanographers will all find much of use and interest within this book. All libraries within universities and research establishments where these subjects are studied and taught should have copies of this book on their shelves.

Brown Trout

Author : Javier Lobón-Cerviá
Publisher : John Wiley & Sons
ISBN 13 : 1119268311
Total Pages : 821 pages
Book Rating : 4.1/5 (192 download)

DOWNLOAD NOW!

Book Synopsis Brown Trout by : Javier Lobón-Cerviá

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.