Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Effects Of Temperature Food Availability And Social Dominance On Microhabitat Selection By Steelhead And Rainbow Trout Oncorhynchus Mykiss
Download Effects Of Temperature Food Availability And Social Dominance On Microhabitat Selection By Steelhead And Rainbow Trout Oncorhynchus Mykiss full books in PDF, epub, and Kindle. Read online Effects Of Temperature Food Availability And Social Dominance On Microhabitat Selection By Steelhead And Rainbow Trout Oncorhynchus Mykiss ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effects of Temperature, Food Availability and Social Dominance on Microhabitat Selection by Steelhead and Rainbow Trout (Oncorhynchus Mykiss) by : Brian Clifford Spence
Download or read book Effects of Temperature, Food Availability and Social Dominance on Microhabitat Selection by Steelhead and Rainbow Trout (Oncorhynchus Mykiss) written by Brian Clifford Spence and published by . This book was released on 1989 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Born to Run? written by Matthew R. Sloat and published by . This book was released on 2013 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steelhead and rainbow trout are common names for marine-migratory (anadromous) and freshwater-resident forms of Oncorhynchus mykiss, a partially migratory salmonid fish. Anadromous and resident forms are sympatric and can produce offspring with a life history different from their own (i.e., steelhead parents can produce rainbow trout offspring and vice versa). The expression of these alternative life histories is a plastic response to individual patterns of energy acquisition, assimilation, and allocation during juvenile life stages. Individual performance during early stream life is of particular interest because of potential carry-over effects on subsequent growth and developmental trajectories. In a series of experiments in laboratory streams, I determined the influence of individual variation in energy metabolism on behavior, growth, and life-history expression in O. mykiss. Individual variation in energy metabolism was a strong predictor of feeding territory acquisition by juvenile fish during the transition from dependence on maternal provisioning of egg yolk reserves to independent feeding. Feeding territory acquisition was positively associated with standard metabolic rate (SMR) under conditions of an abundant and predictable food supply. When the density of intraspecific competitors was manipulated, the association between SMR and territory acquisition was strongest at intermediate stocking densities, moderate at the highest stocking densities, and weakest at the lowest stocking densities. However, reducing the spatial predictability of food resources within streams reversed the influence of SMR on competitive outcomes. These experiments determined that variation in ecological conditions during early life stages imposes different selection regimes on juvenile O. mykiss and results in physiological divergence among cohorts. Subsequent rearing experiments determined that behavioral dominance influences rates of anadromy and freshwater maturation, most likely through the association between SMR and territory acquisition. In addition to the effects of behavioral dominance, I observed a significant influence of sex, rearing temperature, and individual growth trajectories on the expression of anadromy and freshwater maturation. Partially migratory populations of O. mykiss maintain an exceptionally diverse portfolio of life-history strategies. Results from this work lend insight into a suite of behavioral and physiological processes influencing individual life histories.
Book Synopsis Temperature, Genetic, and Ration Effects on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Bioenergetics by : Christopher Alexander Myrick
Download or read book Temperature, Genetic, and Ration Effects on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Bioenergetics written by Christopher Alexander Myrick and published by . This book was released on 1998 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Temperature, Feed Ration and Other Factors on the Growth of Rainbow Trout (Oncorhynchus Mykiss Walbaum 1792) Cultured in Finland by : Timo Mäkinen
Download or read book Effect of Temperature, Feed Ration and Other Factors on the Growth of Rainbow Trout (Oncorhynchus Mykiss Walbaum 1792) Cultured in Finland written by Timo Mäkinen and published by . This book was released on 1993 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Food Limitations in Nature Intensify Sublethal Thermal Stress Experienced by Juvenile Steelhead Trout (Oncorhynchus Mykiss) by : Eric R. Huber
Download or read book Food Limitations in Nature Intensify Sublethal Thermal Stress Experienced by Juvenile Steelhead Trout (Oncorhynchus Mykiss) written by Eric R. Huber and published by . This book was released on 2006 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Social Status and Food Availability on Predator Avoidance Behaviour in Young-of-the-year Rainbow Trout, Oncorhynchus Mykiss by : Mark C. Harvey
Download or read book Effects of Social Status and Food Availability on Predator Avoidance Behaviour in Young-of-the-year Rainbow Trout, Oncorhynchus Mykiss written by Mark C. Harvey and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prey animals are often faced with a Hobson's choice: risk starvation or risk predation. Individuals capable of optimizing this trade-off through the use of context specific predator avoidance behaviour should be at a selective advantage. Food availability and social status have been shown to exert a strong influence on this trade-off, however, it remains unknown if these factors interact (i.e., do dominants and subordinates vary their behavioural decisions based on food availability). The purpose of this study was to examine the effects of food availability and social status, as well as their interaction, on the individual behaviour by young-of-the-year rainbow trout (Oncorhynchus mykiss) in response to perceived predation threats. Pairs of dominants and subordinates were assigned to either low, intermediate or high food availability treatments and exposed to either conspecific alarm cue (predation threat) or distilled water (no threat). The results suggest that an individual's response to a perceived predation threat is indeed dependent upon both social status and food availability.
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 2011-09 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Social Dominance and Cortisol Levels in Rainbow Trout, Oncorhynchus Mykiss by : Angela Kay Eakes
Download or read book Social Dominance and Cortisol Levels in Rainbow Trout, Oncorhynchus Mykiss written by Angela Kay Eakes and published by . This book was released on 1991 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Territorial Behavior in Juvenile Steelhead Trout (Oncorhynchus Mykiss) by : Craig A. Tinus
Download or read book Territorial Behavior in Juvenile Steelhead Trout (Oncorhynchus Mykiss) written by Craig A. Tinus and published by . This book was released on 1999 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile steelhead are known to associate with shiner groups, though they also compete for food. Steelhead form dominance hierarchies within cohorts and aggressively defend feeding territories against all other fish. This study focused on the differential effect of shiner competition on steelhead of different social standing. Survival of subordinate juvenile steelhead was significantly enhanced by the presence of redside shiner under laboratory conditions. A factorial experiment in 80 L tanks examined the relative effects of 0, 3, and 9 shiner at 15° and 20°C on the growth and survival of 3 juvenile steelhead per tank. No temperature effect was detected and there was no significant difference in steelhead growth though statistical power was low (n=5). The largest steelhead did not die in any treatment and no steelhead died in the presence of 9 shiner. In treatments where no shiner were present mortality in the smallest steelhead was 80% (p-value
Book Synopsis Should I Stay Or Should I Go? by : Geoff Koch
Download or read book Should I Stay Or Should I Go? written by Geoff Koch and published by . This book was released on 2015 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steelhead are the sea-going form of Oncorhynchus mykiss. Rainbow trout, also O. mykiss, remain in freshwater. Each form, or life-history, can produce offspring of the other, but the mechanism for this and potential effects that climate change may have on the species are poorly understood. Forest Service scientist Gordie Reeves, along with colleagues from other federal agencies and Oregon State University, conducted a series of studies to better document the biological processes that affect the life-history expression of O. mykiss. They found that standard metabolic rate and lipid levels play important roles: those fish with higher metabolisms and lower lipid levels tended to be steelhead, while those with lower metabolisms and higher lipid levels tended to be resident rainbows. Reeves' findings challenge the existing theory that faster growing individuals of the species tend to be seagoing steelhead. The research examined the effects of water temperature on life-history expression within the species. These findings offer clues about how climate change may affect the rainbow steelhead ratio in the years ahead. This research informs habitat improvement efforts and protection for steelhead populations, which are listed under the Endangered Species Act. It provides context, revealing how their life-history is interconnected with that of rainbow trout, which are not listed.
Book Synopsis Seasonal Use of Habitat by Juvenile Steelhead Trout in Hurdygurdy Creek, California, and Implications for Stream Enhancement by : Robert F. Franklin
Download or read book Seasonal Use of Habitat by Juvenile Steelhead Trout in Hurdygurdy Creek, California, and Implications for Stream Enhancement written by Robert F. Franklin and published by . This book was released on 1989 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Domestication and Temperature on Growth and Swim Performance in Clonal Lines of Rainbow Trout, Oncorhynchus Mykiss by : Kristy Lynn Bellinger
Download or read book The Effects of Domestication and Temperature on Growth and Swim Performance in Clonal Lines of Rainbow Trout, Oncorhynchus Mykiss written by Kristy Lynn Bellinger and published by . This book was released on 2015 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the western U.S., the Pacific salmonids (Oncorhynchus spp.) are of significant cultural, socioeconomic and ecological importance. However, despite decades of conservation efforts, their continued decline remains a great concern. Two critical factors impacting the sustainability of salmon and steelhead populations in the Pacific Northwest include genetic introgression of captive-reared hatchery fish and climate warming. Although salmonid hatcheries have been recognized as having a valuable role in restoring wild stocks, gene flow from domesticated hatchery fish into wild populations presents obstacles for conservation. Additionally, climate change is predicted to continue to increase stream temperatures in the Pacific Northwest, which is particularly hazardous for cold-water dependent Oncorhynchus spp., as their physiology, behavior, and distribution are crucially linked to temperature. Here these factors were investigated using clonal lines of rainbow trout (Oncorhynchus mykiss) by evaluating phenotypic responses to these two factors in the context of developing management protocols to facilitate their sustained existence.
Book Synopsis Effects of Feeding Level, Temperature, and Photoperiod on Growth and Selected Scale Characteristics of Juvenile Steelhead Trout by : Raymond Ronald Boyce
Download or read book Effects of Feeding Level, Temperature, and Photoperiod on Growth and Selected Scale Characteristics of Juvenile Steelhead Trout written by Raymond Ronald Boyce and published by . This book was released on 1985 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Global Warming on the Distribution of Steelhead Trout (Oncorhynchus Mykiss) Populations on the Alaska Peninsula, Alaska by : F. Jeffrey Adams
Download or read book The Effects of Global Warming on the Distribution of Steelhead Trout (Oncorhynchus Mykiss) Populations on the Alaska Peninsula, Alaska written by F. Jeffrey Adams and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Selection and Dispersal in Juvenile Steelhead (Oncorhynchus Mykiss) by : Austin J. Anderson
Download or read book Habitat Selection and Dispersal in Juvenile Steelhead (Oncorhynchus Mykiss) written by Austin J. Anderson and published by . This book was released on 2018 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to study rivers as complex, continuous, and hierarchical ecosystems to obtain a more comprehensive understanding of ecological processes is becoming increasingly clear. For juvenile anadromous salmonids, this scientific endeavor is uniquely essential as their life history strategies are based upon movement through habitats ranging in scale from small streams to the Pacific Ocean. A major factor influencing their odds of successfully completing this life cycle is their performance during the juvenile freshwater stage, and this performance is heavily influenced by habitat opportunities. Habitat selection in freshwater is closely linked with dispersal behavior, which facilitates movement between habitats of variable quality. The objectives of this study were to evaluate juvenile steelhead (Oncorhynchus mykiss) habitat selection and dispersal on an intermediate spatial scale that bridged the microhabitat (individual), reach (
Book Synopsis The Effect of Landscape Features on the Genetic Structure and Diversity of Steelhead and Rainbow Trout (Oncorhynchus Mykiss) in the Russian River Watershed by : Kristy L. Deiner
Download or read book The Effect of Landscape Features on the Genetic Structure and Diversity of Steelhead and Rainbow Trout (Oncorhynchus Mykiss) in the Russian River Watershed written by Kristy L. Deiner and published by . This book was released on 2003 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Temperature on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Following Exposure to an Endocrine Disrupter, 4-nonyllphenol by : Jennifer Shea
Download or read book The Effects of Temperature on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Following Exposure to an Endocrine Disrupter, 4-nonyllphenol written by Jennifer Shea and published by . This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
