Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Effect Of Water Temperature Timing Physiological Condition And Lake Thermal Refugia On Success Of Migrating Adult Sockeye Salmon
Download Effect Of Water Temperature Timing Physiological Condition And Lake Thermal Refugia On Success Of Migrating Adult Sockeye Salmon full books in PDF, epub, and Kindle. Read online Effect Of Water Temperature Timing Physiological Condition And Lake Thermal Refugia On Success Of Migrating Adult Sockeye Salmon ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effect of Water Temperature, Timing, Physiological Condition and Lake Thermal Refugia on Success of Migrating Adult Sockeye Salmon by : Martin Todd Mathes
Download or read book Effect of Water Temperature, Timing, Physiological Condition and Lake Thermal Refugia on Success of Migrating Adult Sockeye Salmon written by Martin Todd Mathes and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temporal and Spatial Differences in Smolting Among Sockeye Salmon (Oncorhynchus Nerka) Populations Throughout Fresh- and Seawater Migration and the Effect of Water Temperature on the Smolt Window by : Marley Carter Bassett
Download or read book Temporal and Spatial Differences in Smolting Among Sockeye Salmon (Oncorhynchus Nerka) Populations Throughout Fresh- and Seawater Migration and the Effect of Water Temperature on the Smolt Window written by Marley Carter Bassett and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Salmon smolts undergo physiological changes in the spring that are important for successful migration to seawater. Species that are widely distributed may differ in timing of physiological changes associated with smelting. In my first study, I compared indices of smolt characteristics among populations that differ in migration distance to the ocean. Fraser River sockeye salmon from four regions in the watershed were intercepted at different times during migration to characterize the parr-smolt transformation. Gill Na+/K+-ATPase (NKA) activity was highly variable at the start of migration, and was not explained by the distance from the ocean. Gill NKA activity changes with migration were also highly variable, but consistently smolts in the ocean had the highest gill NKA activities. The nature of smelting appears to be dynamic and variation was not based on the region of origin, timing during migration, or on the year of migration. The duration of time when anadromous salmon are able to survive in seawater - the smolt window - is influenced by temperature. In my second study, I found that warm water temperature abbreviated the smolt window. Additionally, isoforms of the gill NKA enzyme and endocrine signals suggest that the stimulus for smelting occurred prior emigration from the natal lake. Modeling the thermal experience that smolts encountered as they migrated downstream to the ocean in 2012 suggested Chilko fish did not experience temperatures as warm as the temperatures that abbreviated the smolt window in my study. Furthermore, climate change projections for temperature may not limit successful emigration of Chilko sockeye salmon smolts from central British Columbia to the ocean - but changes in other abiotic and biotic factors may confound this prediction.
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 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2009-05 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Changes Associated with the Diadromous Migration of Salmonids by : Helga Rachel Høgåsen
Download or read book Physiological Changes Associated with the Diadromous Migration of Salmonids written by Helga Rachel Høgåsen and published by NRC Research Press. This book was released on 1998 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents and discusses present knowledge concerning the diadromous migration of salmonids. It groups elements ranging from ecology to cell biology, to provide the reader background knowledge for critical understanding of published literature and for design of experiments.
Book Synopsis Behavior and Survival of Radio-tagged Sockeye Salmon During Adult Migration in the Snake and Salmon Rivers by : Matthew L. Keefer
Download or read book Behavior and Survival of Radio-tagged Sockeye Salmon During Adult Migration in the Snake and Salmon Rivers written by Matthew L. Keefer and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Conservation efforts for critically endangered Snake River sockeye salmon (Oncorhynchus nerka) have been partially hindered by high en route mortality of adult fish during their ~1,450 kilometer freshwater spawning migration. Through the 1990s, Snake River sockeye were poised on the brink of extinction, with annual returns averaging fewer than five fish. A moderate recovery began in 1999, when the first adult progeny from a captive broodstock program returned from the ocean. The largest run in several decades returned in 2000, with 299 fish counted at Lower Granite Dam on the Snake River. Taking advantage of this rare opportunity, we collected and radio-tagged 31 adults at the dam and then monitored their migration behavior and survival over ~750 kilometers. Tagged fish migrated rapidly through the Lower Granite reservoir and successively more slowly through each upstream reach. Successful and unsuccessful fish migrated at similar rates through the lower study reaches, after which unsuccessful fish migrated significantly more slowly than successful fish. Survival dramatically declined late in the run after mean water temperatures exceeded 21 °C and daily maximums reached 23-24 °C. Several fish displayed thermoregulatory behavior during the warmest period, using cooler water from tributaries including the Clearwater and Grande Ronde rivers. Fish with injuries at the time of tagging (e.g., head injuries, lesions, gill net marks) were less likely to survive than fish without notable injuries. Notably, fish with injuries were concentrated in the later portion of the run, suggesting possible condition-dependent delay during migration in the lower Columbia and Snake rivers. Overall, results strongly suggest indirect sublethal temperature effects, possibly mediated by poor initial fish condition. Migration in water temperatures near tolerance thresholds may exacerbate mortality risks, and these risks are most likely for fish with later migration timing. In fact, sockeye salmon counts at Ice Harbor indicate that there may have been recent selection against later-timed adult sockeye salmon. High en route mortality of Snake River sockeye will likely persist or increase given projections for continued warming of their migration corridor."--Abstract (page iv).
Book Synopsis Water Temperature, Water Level, and Adult Sockeye Salmon Migration Observations in Auke Creek, Alaska by : H. W. Stiff
Download or read book Water Temperature, Water Level, and Adult Sockeye Salmon Migration Observations in Auke Creek, Alaska written by H. W. Stiff and published by . This book was released on 2019 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Historic Water Temperature (1924-2018), River Discharge (1929-2018), and Adult Sockeye Salmon Migration (1937-2018) Observations in the Columbia, Okanogan, and Okanagan Rivers by : Kim Dennis Hyatt
Download or read book Historic Water Temperature (1924-2018), River Discharge (1929-2018), and Adult Sockeye Salmon Migration (1937-2018) Observations in the Columbia, Okanogan, and Okanagan Rivers written by Kim Dennis Hyatt and published by . This book was released on 2020 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Connecting Physiological Condition with Salinity Preference Behaviour to Infer Estuary Habitat Choice in Sockeye Salmon Smolts (Oncorhynchus Nerka) by : Daniella LoScerbo
Download or read book Connecting Physiological Condition with Salinity Preference Behaviour to Infer Estuary Habitat Choice in Sockeye Salmon Smolts (Oncorhynchus Nerka) written by Daniella LoScerbo and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time period in which juvenile salmon remain in an estuary varies greatly among and within populations, with some individuals passing through estuaries in a matter of hours, while others remain in the estuary for several months. This individual variation in estuary use suggests that there may be underlying differences in individual salmon condition that temporally mitigate the selection of habitat, such as smolt size (fork length, mass, condition factor), stored energy (lipids and proteins), and osmoregulatory function (gill N+-K+-ATPase activity, NKA). I investigated the role of physical and physiological condition on the selection of estuarine and ocean habitat by sockeye salmon (Oncorhynchus nerka) smolts intercepted at the initiation of their downstream migration from Chilko Lake, Fraser River, B.C.. Since juvenile salmon energetic costs increase with rising salinity, I expected that smolts of lower physiological condition (i.e. low condition factor, poor energetic status and low NKA) would prefer to remain in the freshwater environment of the estuary, while smolts of higher physiological condition would prefer saline waters in the estuary and potentially indicate more rapid ocean entry. Behavioural salinity preference experiments were conducted on unfed smolts (n = 263) held in freshwater at three time intervals during their downstream migration period, representing the expected timing for lake exit, estuary entry, and ocean entry, at 0, 1, and 3 weeks respectively. Smolt condition factor (K), energetic stores and NKA predicted salinity preference behaviour in the estuary and ocean outmigration stages, but not at lake exit. Our results suggest that smolt physiological condition upon reaching the estuary may influence migratory behaviour and habitat selection, providing novel evidence on the temporally dependent interplay of physiology, behaviour and migration in wild juvenile Pacific salmon. As juvenile migratory behaviour is linked to physiological condition, and physiological condition is determined by productivity and competition within the rearing habitat, the importance of estuaries likely varies across years and within a population cohort; thus estuaries may be of heightened importance for wild juvenile salmon in years of poor freshwater growth conditions. These findings support the growing body of evidence on the importance of conserving both rearing habitat for juvenile growth potential and estuarine habitat for smolt refugia before ocean entry.
Book Synopsis Hydro-system Related Mortality and In-lake Behaviour of Migrating Adult Sockeye Salmon in the Seton-Anderson Watershed, British Columbia by :
Download or read book Hydro-system Related Mortality and In-lake Behaviour of Migrating Adult Sockeye Salmon in the Seton-Anderson Watershed, British Columbia written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon carry out long distance spawning migrations from ocean feeding grounds to natal freshwater streams. Because many salmon rivers are dammed, fishways are required to enable individuals to pass through dams and reach upstream spawning areas. However, many fishways are ineffective, preventing or delaying upstream passage, suggesting a need to monitor and evaluate these facilities. I conducted a literature review of studies evaluating the effectiveness of fishways to assess what taxa and life-stages have been studied, the questions asked during evaluation, and how these varied by time or geographic location. The majority of studies focused on adult fishes (68%) and the order Salmoniformes (58%). Many studies evaluated exogenous mechanisms of passage failure, such as environmental or structural factors (69%). Few studies examined endogenous (i.e. physiological) factors or post-passage consequences, information that is necessary to understand passage failure and inform mitigation strategies. A field study was carried out to evaluate the impact of a dam and fishway on the spawning migrations of sockeye salmon in the Seton-Anderson watershed in British Columbia. I used acoustic telemetry, non-lethal biopsies, and an experimental approach, releasing fish either up- or down-stream of the dam and comparing behaviour and mortality between the two groups. Fishway passage efficiency was 80% and most failure was associated with failing to locate the entrance. Attraction to the fishway entrance varied with water discharge volume from the dam, with the longest delays and highest failure rate at the highest discharge. Fish released downstream of the dam suffered higher mortality in lakes upstream of the fishway (27%) compared to fish released downstream of the dam (7%), suggesting post-passage consequences that reduce survival. Sockeye migrating through two thermally stratified lakes upstream of the dam were used as models to investigate the hypothesis that temperatures.
Book Synopsis The Cumulative Effects of Physiology, Temperature, and Natal Water Cues on the Migration Behaviour and Survival of Adult Sockeye Salmon During Passage Through the Seton River Hydroelectric System, British Columbia by : Collin Thomas Middleton
Download or read book The Cumulative Effects of Physiology, Temperature, and Natal Water Cues on the Migration Behaviour and Survival of Adult Sockeye Salmon During Passage Through the Seton River Hydroelectric System, British Columbia written by Collin Thomas Middleton and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Ecology of Pacific Salmon by : Cornelis Groot
Download or read book Physiological Ecology of Pacific Salmon written by Cornelis Groot and published by UBC Press. This book was released on 2010-10-01 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every year, countless juvenile Pacific salmon leave streams and rivers on their migration to feeding grounds in the North Pacific Ocean and the Bering Sea. After periods ranging from a few months to several years, adult salmon enter rivers along the coasts of Asia and North America to spawn and complete their life cycle. Within this general outline, various life history patterns, both among and within species, involve diverse ways of exploiting freshwater, estuarine, and marine habitats. There are seven species of Pacific salmon. Five (coho, chinook chum, pink, and sockeye) occur in both North America and Asia. Their complex life histories and spectacular migrations have long fascinated biologists and amateurs alike. Physiological Ecology of Pacific Salmon provides comprehensive reviews by leading researchers of the physiological adaptations that allow Pacific Salmon to sustain themselves in the diverse environments in which they live. It begins with an analysis of energy expenditure and continues with reviews of locomotion, growth, feeding, and nutrition. Subsequent chapters deal with osmotic adjustments enabling the passage between fresh and salt water, nitrogen excretion and regulation of acid-base balance, circulation and gas transfer, and finally, responses to stress. This thorough and authoritative volume will be a valuable reference for students and researchers of biology and fisheries science as they seek to understand the environmental requirements for the perpetuation of these unique and valuable species.
Book Synopsis Evaluation of Water Temperature Effects on Adult Sockeye Salmon (Oncorhynchus Nerka) Behavior in the Yakima River, Washington, 2019 by : Tobias J. Kock
Download or read book Evaluation of Water Temperature Effects on Adult Sockeye Salmon (Oncorhynchus Nerka) Behavior in the Yakima River, Washington, 2019 written by Tobias J. Kock and published by . This book was released on 2020 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate, Embryonic Development, and Potential for Adaptation to Warming Water Temperatures by Bristol Bay Sockeye Salmon by : Morgan McKenzie Sparks
Download or read book Climate, Embryonic Development, and Potential for Adaptation to Warming Water Temperatures by Bristol Bay Sockeye Salmon written by Morgan McKenzie Sparks and published by . This book was released on 2016 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapidly warming water temperatures associated with climate change represent a substantial disturbance to the habitat of aquatic ectothermic organisms. For salmonid fishes (family Salmonidae), early life history survival and timing of reproduction and development are closely tied to temperature, such that altered thermal regimes could alter patterns of survival or shift phenology into a mismatch with the environment. Because temperature is the dominant driver of developmental rates, empirical statistical models have been developed to predict the timing of hatching and fry emergence based on incubation temperature. In this thesis I explored how the timing of hatching and emergence may shift in response to warming temperatures and how spawning timing across an Alaskan landscape is shaped by incubation temperatures experienced by sockeye salmon (Oncorhynchus nerka) embryos and alevin. Additionally, I quantified the relative roles of genetics and environmentally induced plasticity on the timing of hatching in two populations of sockeye salmon from the Iliamna Lake system, Alaska by rearing them in common garden conditions in the laboratory. To meet these goals I reformulated a widely cited developmental model to incorporate variability in natural regimes and use it to predict hatching timing over the course of the spawning duration for 25 populations of Bristol Bay sockeye salmon. Additionally, I hind- and forecasted lake temperature based off historical and predicted air temperatures to estimate and predict hatching for a single population. I found that predicted hatching timing for wild populations varied between 58 and 260 days, and was largely variable as a result of habitat thermal heterogeneity and parental spawn time. I also predicted a three-week decrease in hatching timing over the course of the next century for a single beach spawning population, which was just beyond historic variability. Counter to expectations, for a subset of populations hatching and emergence timing variability exceeded that of spawning timing, indicating the relationship between spawning timing and incubation temperature may be weaker than expected. The results of the common garden experiment revealed indistinguishable differences between populations in hatching timing across five temperature scenarios, but strong plasticity as timing differed between 74 and 189 days in the warmest to coolest treatment. Furthermore, I detected family-specific differences in hatching timing both within and among treatments consistent with heritable developmental rates and gene by environment interactions in days to hatch, where the interaction between treatment and family was as high as 10 days difference in hatching. Population or family-specific survival in this experiment did not differ in response to temperature suggesting a lack of thermal adaptation in this regard during this life stage in these populations. Alevin mass and length upon hatching varied little among treatments (
Download or read book King of Fish written by David Montgomery and published by Basic Books. This book was released on 2009-04-28 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The salmon that symbolize the Pacific Northwest's natural splendor are now threatened with extinction across much of their ancestral range. In studying the natural and human forces that shape the rivers and mountains of that region, geologist David Montgomery has learned to see the evolution and near-extinction of the salmon as a story of changing landscapes. Montgomery shows how a succession of historical experiences -first in the United Kingdom, then in New England, and now in the Pacific Northwest -repeat a disheartening story in which overfishing and sweeping changes to rivers and seas render the world inhospitable to salmon. In King of Fish , Montgomery traces the human impacts on salmon over the last thousand years and examines the implications both for salmon recovery efforts and for the more general problem of human impacts on the natural world. What does it say for the long-term prospects of the world's many endangered species if one of the most prosperous regions of the richest country on earth cannot accommodate its icon species? All too aware of the possible bleak outcome for the salmon, King of Fish concludes with provocative recommendations for reinventing the ways in which we make environmental decisions about land, water, and fish.
Book Synopsis Migration of Freshwater Fishes by : Martyn Lucas
Download or read book Migration of Freshwater Fishes written by Martyn Lucas and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have increasingly demonstrated the widespread existence of spatio-temporal variations in the abundance and distribution of species of freshwater fishes, previously assumed not to move between habitats. These movements are often on a seasonal or ontogenetic basis, for spawning, feeding and refuge, and in many cases are fundamental for the successful completion of lifecycles. This important book provides a single source for a range of previously widely dispersed information on these movements of fish in fresh waters, covering potamodromous fishes as well as the more familiar diadromous species, worldwide. Contents include full descriptions of types of migration and spatial behaviour, the stimulus and capacity for fish to migrate, the effects of climate on patterns of migratory behaviour, a taxonomic analysis (mostly by family) of freshwater fish migration, methods for studying migration, and details of the impacts of man's activities on freshwater fish migration. Migration of Freshwater Fishes provides an excellent and comprehensive reference to which the river manager, biologist or student can now refer to obtain information, advice and current opinion on the migratory behaviour of most taxonomic groups of fishes occurring in fresh water. University libraries and aquatic research stations should also have copies of this essential reference book on their shelves. Well-known international authors. Of great commercial importance to fisheries and professional angling bodies. Draws together much new information in one place. Detailed review of world wide migratory behaviour for most groups of freshwater fishes. Pure and applied relevance, for academics, fisheries scientists, river managers and conservationists. This comprehensive book includes 67 tables and figures and over 1,400 references.
Book Synopsis Temperature and Discharge Conditions Associated with Migration of Adult Sockeye Salmon Entering the Docee River and Long Lake Watershed, B.C. from 1968-2012 by : H. W Stiff
Download or read book Temperature and Discharge Conditions Associated with Migration of Adult Sockeye Salmon Entering the Docee River and Long Lake Watershed, B.C. from 1968-2012 written by H. W Stiff and published by . This book was released on 2015 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
