Academic literature on the topic 'Chinook salmon – Effect of insecticides on'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Chinook salmon – Effect of insecticides on.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Chinook salmon – Effect of insecticides on"

1

Scholz, Nathaniel L., Nathan K. Truelove, Barbara L. French, et al. "Diazinon disrupts antipredator and homing behaviors in chinook salmon (Oncorhynchus tshawytscha)." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 9 (2000): 1911–18. http://dx.doi.org/10.1139/f00-147.

Full text
Abstract:
Neurotoxic pesticides are known to contaminate surface waters that provide habitat for salmonids, including some listed for protection under the U.S. Endangered Species Act. Despite their widespread use, the impacts of these pesticides on the neurological health of wild salmon are not well understood. Of particular concern are the organophosphate and carbamate insecticides that block synaptic transmission by inhibiting neuronal acetylcholinesterase. Here we assess the effects of diazinon, an organophosphate insecticide, on alarm pheromone induced antipredator responses and homing behavior in c
APA, Harvard, Vancouver, ISO, and other styles
2

Weston, Donald P., Daniel Schlenk, Navneet Riar, Michael J. Lydy, and Marjorie L. Brooks. "Effects of pyrethroid insecticides in urban runoff on Chinook salmon, steelhead trout, and their invertebrate prey." Environmental Toxicology and Chemistry 34, no. 3 (2015): 649–57. http://dx.doi.org/10.1002/etc.2850.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Eder, Kai J., Christian M. Leutenegger, Heinz-R. Köhler, and Ingeborg Werner. "Effects of neurotoxic insecticides on heat-shock proteins and cytokine transcription in Chinook salmon (Oncorhynchus tshawytscha)." Ecotoxicology and Environmental Safety 72, no. 1 (2009): 182–90. http://dx.doi.org/10.1016/j.ecoenv.2008.04.020.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Berejikian, Barry A., R. Jan F. Smith, E. Paul Tezak, Steven L. Schroder, and Curtis M. Knudsen. "Chemical alarm signals and complex hatchery rearing habitats affect antipredator behavior and survival of chinook salmon (Oncorhynchus tshawytscha) juveniles." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 5 (1999): 830–38. http://dx.doi.org/10.1139/f99-010.

Full text
Abstract:
The present study examined the effects of chemical antipredator conditioning on antipredator behavior and the relative effects of antipredator conditioning and seminatural rearing environments on postrelease survival of chinook salmon (Onocrhynchus tshawytscha). Hatchery-reared juvenile chinook salmon were exposed to extracts from conspecific tissue or to comparable stimuli from green swordtail (Xiphophorus helleri). These "injured fish" stimuli were paired with water that contained the odour of predatory cutthroat trout (Oncorhynchus clarki). Chinook salmon receiving conspecific stimuli showe
APA, Harvard, Vancouver, ISO, and other styles
5

Murray, C. B., and J. D. McPhail. "Effect of incubation temperature on the development of five species of Pacific salmon (Oncorhynchus) embryos and alevins." Canadian Journal of Zoology 66, no. 1 (1988): 266–73. http://dx.doi.org/10.1139/z88-038.

Full text
Abstract:
Embryo and alevin survival, time to hatching and emergence, and alevin and fry size of five species of Pacific salmon (Oncorhynchus) were observed at five incubation temperatures (2, 5, 8, 11, and 14 °C). No pink (Oncorhynchus gorbuscha) or chum (O. keta) salmon embryos survived to hatching at 2 °C. Coho (O. kisutch) and sockeye (O. nerka) salmon had higher embryo survival at 2 °C than chinook (O. tschawytscha) salmon. At 14 °C, chum, pink, and chinook salmon had higher embryo survival than coho or sockeye salmon. In all species, peaks of embryo mortality occurred at specific developmental sta
APA, Harvard, Vancouver, ISO, and other styles
6

Shirvell, C. S. "Effect of Changes in Streamflow on the Microhabitat Use and Movements of Sympatric Juvenile Coho Salmon (Oncorhynchus kisutch) and Chinook Salmon (O. tshawytscha) in a Natural Stream." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 7 (1994): 1644–52. http://dx.doi.org/10.1139/f94-165.

Full text
Abstract:
The microhabitats at positions selected by juvenile coho (Oncorhynchus kisutch) and chinook salmon (O. tshawytscha) following a change in streamflow differed from microhabitats occupied at normal streamflows. At drought streamflow (37% mean seasonal streamflow (MSF)), juvenile coho salmon selected slower, darker, and higher sites above the streambed (P < 0.05) than sites selected at normal (75% MSF) or flood (159% MSF) flows. Juvenile chinook salmon microhabitat use changed similarly with changes in streamflow, but the differences were not significant. Up to one fifth of the fish chose posi
APA, Harvard, Vancouver, ISO, and other styles
7

Beamish, Richard J., and Chrys-Ellen M. Neville. "Pacific salmon and Pacific herring mortalities in the Fraser River plume caused by river lamprey (Lampetra ayresi)." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 3 (1995): 644–50. http://dx.doi.org/10.1139/f95-064.

Full text
Abstract:
River lamprey (Lampetra ayresi) enter the Strait of Georgia from the Fraser River and feed almost exclusively on Pacific herring (Clupea harengus) and salmon (Oncorhynchus spp.). Although the major prey of river lamprey is Pacific herring, the greater effect of lamprey predation was on the populations of chinook (O. tshawytscha) and coho (O. kisutch) salmon. In 1990 and 1991, river lamprey killed a minimum of 20 million and 18 million chinook salmon, respectively, and a minimum of 2 million and 10 million coho salmon in the same years. In 1991, river lamprey in the Fraser River plume killed an
APA, Harvard, Vancouver, ISO, and other styles
8

Gregory, Robert S. "Effect of Turbidity on the Predator Avoidance Behaviour of Juvenile Chinook Salmon (Oncorhynchus tshawytscha)." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 2 (1993): 241–46. http://dx.doi.org/10.1139/f93-027.

Full text
Abstract:
The effect of turbidity on the predator avoidance behaviour of juvenile chinook salmon (Oncorhynchus tshawytscha) was determined in controlled laboratory experiments. Bird and fish models were used to simulate predator risk. In the absence of risk, juvenile chinook were distributed randomly within an experimental arena in turbid conditions (≈23 NTU), but in clear conditions (<1 NTU) they associated with the bottom. When introduced to bird and fish predator models, the chinook altered their distribution and occupied deeper parts of the arena regardless of turbidity level. However, their resp
APA, Harvard, Vancouver, ISO, and other styles
9

Scholz, Nathaniel L., Nathan K. Truelove, Jana S. Labenia, David H. Baldwin, and Tracy K. Collier. "DOSE-ADDITIVE INHIBITION OF CHINOOK SALMON ACETYLCHOLINESTERASE ACTIVITY BY MIXTURES OF ORGANOPHOSPHATE AND CARBAMATE INSECTICIDES." Environmental Toxicology and Chemistry 25, no. 5 (2006): 1200. http://dx.doi.org/10.1897/05-030r1.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Kilduff, D. Patrick, Louis W. Botsford, and Steven L. H. Teo. "Spatial and temporal covariability in early ocean survival of Chinook salmon (Oncorhynchus tshawytscha) along the west coast of North America." ICES Journal of Marine Science 71, no. 7 (2014): 1671–82. http://dx.doi.org/10.1093/icesjms/fsu031.

Full text
Abstract:
Abstract Knowledge of the spatial and temporal extent of covariation in survival during the critical ocean entry stage will improve our understanding of how changing ocean conditions influence salmon productivity and management. We used data from the Pacific coastwide coded-wire tagging program to investigate local and regional patterns of ocean survival of Chinook salmon (Oncorhynchus tshawytscha) from the Central Valley of California to southeastern Alaska from 1980–2006. Ocean survival of fish migrating as subyearlings covaried strongly from Vancouver Island to California. Short-term correl
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Chinook salmon – Effect of insecticides on"

1

Sauter, Sally T. "Thermal Preference of Spring and Fall Chinook Salmon (Oncorhynchus tshawytscha) during Smoltification." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5252.

Full text
Abstract:
Innate species-specific temperature preferences of fish are subjected to fluctuations under a variety of environmental, physiological, and developmental conditions. The temperature preference patterns of two ecologically distinct races of chinook salmon (Oncorhynchus tshawytscha) were investigated as laboratory held animals underwent smoltification. Smoltification is a distinct developmental stage in the life history of anadromous salmonids when juvenile fish undergo profound behavioral, morphological, and physiological differentiation prepatory to seawater entry. A group of spring and fall ch
APA, Harvard, Vancouver, ISO, and other styles
2

Negrey, John Patrick. "The effect of dietary methylmercury on Na+,K+-ATPase activity and growth in fall-run chinook salmon (O. tshawytscha) from California's Central Valley." Thesis, San Jose State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1552274.

Full text
Abstract:
<p>Hatchery reared Chinook salmon from California&rsquo;s Central Valley were fed for 67 days (Apr-Jun, 2008) on fish pellets mixed with either 0, 1, 3, or 5 &micro;g&middot;g<sup>&minus;1</sup> methylmercury hydroxide. Weight, fork length, condition factor, and Na<sup>+</sup>,K<sup>+</sup>-ATPase measurements were determined every two weeks and a 96-h seawater challenge was conducted at the conclusion of the experiment. </p><p> Results from two-way ANOVA, with treatment and date as independent variables, indicated no significant differences for weight (F<sub>3,32</sub> = 1.38; P = 0.280), l
APA, Harvard, Vancouver, ISO, and other styles
3

Misumi, Ichiro. "Immune responses of juvenile chinook salmon (Oncorhynchus tshawytscha) to p,p-��DDE and tributyltin." Thesis, 2003. http://hdl.handle.net/1957/32271.

Full text
Abstract:
In this thesis, we examined the effects of the exposures to anthropogenic pollutants on the fish, primarily juvenile chinook salmon, immune system using newly and recently developed immune assays. In addition, we developed a new assay for measuring immunocompetence of fish. In the first chapter, the Alamar Blue assay was developed to quantify the proliferation of chinook salmon (Oncorhynchus tshawytscha) leukocytes. Isolated splenic and pronephric leukocytes were stimulated with different concentration of mitogens (LPS, PWM, and ConA) for various incubation times. Optimum cell culture conditio
APA, Harvard, Vancouver, ISO, and other styles
4

Milston, Ruth Helen. "Effects of o,p'-DDE on the immune system of juvenile chinook salmon (Oncorhynchus tshawytscha)." Thesis, 2001. http://hdl.handle.net/1957/32442.

Full text
Abstract:
Environmental factors such as chemical contamination can have immunomodulatory effects on the immune response of fish and may be contributing to the decline in salmonid populations by augmenting disease susceptibility. Xenobiotics can interfere with the immune system at several levels of complexity, and different immune cells and processes have variable sensitivity to pollutants. For this reason, a suite of tests is required to evaluate immunomodulatory mechanisms. In this thesis, I formulated and calibrated an assay for the detection of humoral immunity for chinook salmon (Oncorhynchus tshawv
APA, Harvard, Vancouver, ISO, and other styles
5

Harrahy, Laura Nicole Martini. "The effects of elevated temperature and stress on immune function in juvenile chinook salmon (Oncorhynchus tshawytscha)." Thesis, 2000. http://hdl.handle.net/1957/33080.

Full text
Abstract:
Stress, including extreme or rapidly changing temperatures, are known to have deleterious effects on fish health and physiology. This thesis examines the combined effects of elevated acclimation temperature and acute handling stress on the number of antibody producing cells, plasma lysozyme concentrations, and the number of pronephric leukocytes in juvenile chinook salmon (Oncorhynchus tshawytscha). An additional goal of this thesis was to explore the effects of a temperature fluctuation, as a potential instigator of thermal shock, on innate immunity in wild fall chinook salmon of the Columbia
APA, Harvard, Vancouver, ISO, and other styles
6

Price, Carol Seals. "Factors affecting the saltwater-entry behavior and saltwater preference of juvenile chinook salmon, Oncorhynchus tshawytscha." Thesis, 2002. http://hdl.handle.net/1957/32410.

Full text
Abstract:
From 1998-2000, laboratory studies were conducted to examine factors that impact saltwater-entry behavior and saltwater preference (SWP) of juvenile chinook salmon, Oncorhynchus tshawytscha. These factors included bacterial kidney disease, stress and the presence of trout, O. mykiss. An additional study investigated the orientation of the startle response of chinook salmon within a salinity gradient. All experiments were conducted in 757-1 tanks in which a stable, vertical salinity gradient was established. SWP was decreased in fish suffering from bacterial kidney disease (31 �� 20.0%), compar
APA, Harvard, Vancouver, ISO, and other styles
7

Knoebl, Iris. "Characterization and the effects of stress on glucocorticoid receptors in the brains of chinook salmon (Oncorhynchus tshawytscha)." Thesis, 1995. http://hdl.handle.net/1957/34702.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Slater, Caleb H. "Sex steroids, gonadotropins, and effects on the immune response in maturing spring Chinook salmon (Oncorhynchus tshawytscha)." Thesis, 1991. http://hdl.handle.net/1957/37707.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Hecht, Scott A. "Accumulation and effects of 4-nonylphenol in chinook salmon fry and their estuarine amphipod prey." Thesis, 2002. http://hdl.handle.net/1957/31141.

Full text
Abstract:
4-nonylphenol (NP), a surfactant degradation product, is an unregulated, ubiquitous aquatic contaminant and endocrine disruptor, for which aquatic life criteria are currently under development by U.S. EPA. The effects of NP on estuarine amphipods and chinook salmon fry were investigated, and this dissertation reports research into the impacts of NP bioaccumulation on the amphipods and resultant endocrine disruption of their juvenile salmon predators. Sensitivity to, and bioaccumulation of, NP by benthic amphipods were quantified. Factors affecting the bioavailability of NP to three species of
APA, Harvard, Vancouver, ISO, and other styles
10

VanderKooi, Scott P. "The effects of electroshock on immune function and disease progression in juvenile spring chinook salmon (Oncorhynchus tshawytscha)." Thesis, 1999. http://hdl.handle.net/1957/33161.

Full text
Abstract:
Electrofishing is a sampling tool commonly used by fisheries researchers. While much is known about the effects of electroshock on fish physiology, consequences to the immune system and disease progression have not received attention. To understand the effects of electroshock on immune function we undertook a comparison of electroshock and handling stress in regards to selected immune functions and disease progression in juvenile spring chinook salmon (Oncorhynchus tshawytscha). The handling stress treatment was included to insure the responsiveness of the fish. Our objectives were to determin
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Chinook salmon – Effect of insecticides on"

1

Rogers, Donald E. Impact of redd loss at Vernita Bar on Hanford Reach chinook salmon production: Final report 1988. U.S. Dept. of Energy, Bonneville Power Administration, Division of Fish and Wildlife, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Marlowe, Christopher. The effect of decreasing sample size on the precision of GSI stock composition estimates for chinook salmon (Onchorhynchus tshawytscha) using data from the Washington Coastal and Strait of Juan de Fuca troll fisheries in 1989-1990. Washington Dept. of Fish and Wildlife, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Satterthwaite, Thomas D. Effects of reservoir releases on adult salmon during a drought year. Oregon Dept. of Fish and Wildlife, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Cox, Caroline. Lethal lawns: Diazinon use threatens salmon survival. Oregon Pesticide Education Network, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Brege, Dean A. Research at McNary Dam to improve fish guiding efficiency of yearling and subyearling chinook salmon, 1987. Coastal Zone and Estuarine Studies Division, Northwest and Alaska Fisheries Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bowles, Edward C. Salmon supplementation studies in Idaho Rivers (Idaho supplementation studies): Experimental design. U.S. Dept. of Energy, Bonneville Power Administration, Division of Fish and Wildlife, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Giorgi, Albert. Mortality of yearling chinook salmon prior to arrival at Lower Granite Dam, on the Snake River. U.S. Dept. of Energy, Bonneville Power Administration, Division of Fish and Wildlife, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kindley, Ray. The flow/survival/travel time relationship: Review and analysis of supporting information and rationale for flows for juvenile spring and summer chinook migrations. Pacific Northwest Utilities Conference Committee, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Thrower, F. Effect of seawater entry date on 24-hour plasma sodium concentration and survival of juvenile spring Chinook salmon (Oncorhynchus tshawytscha) reared in marine net pens. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Rondorf, Dennis W. Identification of the spawning, rearing and migratory requirements of fall chinook salmon in the Columbia River basin: Annual report 1992. U.S. Dept. of Energy, Bonneville Power Administration, Division of Fish & Wildlife, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Chinook salmon – Effect of insecticides on"

1

"Pacific Salmon: Ecology and Management of Western Alaska’s Populations." In Pacific Salmon: Ecology and Management of Western Alaska’s Populations, edited by Nicola Hillgruber and Christian E. Zimmerman. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874110.ch11.

Full text
Abstract:
&lt;em&gt;Abstract.&lt;/em&gt;—In the late 1990s and early 2000s, large declines in numbers of chum salmon &lt;em&gt;Oncorhynchus keta &lt;/em&gt;and Chinook salmon &lt;em&gt;O. tshawytscha &lt;/em&gt;returning to the Arctic-Yukon-Kuskokwim (AYK) region (Alaska, USA) illuminated the need for an improved understanding of the variables controlling salmon abundance at all life stages. In addressing questions about salmon abundance, large gaps in our knowledge of basic salmon life history and the critical early marine life stage were revealed. In this paper, results from studies conducted on the estuarine ecology of juvenile salmon in western Alaska are summarized and compared, emphasizing timing and distribution during outmigration, environmental conditions, age and growth, feeding, and energy content of salmon smolts. In western Alaska, water temperature dramatically changes with season, ranging from 0°C after ice melt in late spring/early summer to 19°C in July. Juvenile salmon were found in AYK estuaries from early May until August or September, but to date no information is available on their residence duration or survival probability. Chum salmon were the most abundant juvenile salmon reported, ranging in percent catch from &lt;0.1% to 4.7% and most research effort has focused on this species. Abundances of Chinook salmon, sockeye salmon &lt;em&gt;O. nerka&lt;/em&gt;, and pink salmon &lt;em&gt;O. gorbuscha &lt;/em&gt;varied among estuaries, while coho salmon &lt;em&gt;O. kisutch &lt;/em&gt;juveniles were consistently rare, never amounting to more than 0.8% of the catch. Dietary composition of juvenile salmon was highly variable and a shift was commonly reported from epibenthic and neustonic prey in lower salinity water to pelagic prey in higher salinity water. Gaps in the knowledge of AYK salmon estuarine ecology are still evident. For example, data on outmigration patterns and residence timing and duration, rearing conditions and their effect on diet, growth, and survival are often completely lacking or available only for few selected years and sites. Filling gaps in knowledge concerning salmon use and survival in estuarine and near-shore habitats within the AYK region will aid in assessing the relative roles of all habitats (freshwater to marine) in controlling salmon abundance.
APA, Harvard, Vancouver, ISO, and other styles
2

"Pacific Salmon: Ecology and Management of Western Alaska’s Populations." In Pacific Salmon: Ecology and Management of Western Alaska’s Populations, edited by John M. Burr. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874110.ch25.

Full text
Abstract:
&lt;em&gt;Abstract.&lt;/em&gt;—The sport fisheries for Chinook &lt;em&gt;Oncorhynchus tshawytscha &lt;/em&gt;and coho salmon &lt;em&gt;O. kisutch &lt;/em&gt;are a small but important component of fisheries in the Arctic-Yukon-Kuskokwim region (AYK). In the United States’ portion of the Yukon River drainage and in the Kuskokwim River drainage, only 5% of the total harvest (sport, commercial, subsistence) of these species are taken by the sport fisheries. In Norton Sound, sport fisheries harvest is somewhat more important and approximates 10% of the total Chinook and coho salmon harvest. The goal of sport fishery management is to maintain reliable fishing opportunities. In contrast, commercial and subsistence fishery management seeks a maximum sustainable harvest via efficient capture methods to provide for subsistence needs and viable commercial markets. The Alaska Board of Fisheries and Alaska Department of Fish and Game have primary responsibility for managing fisheries. Sport fishery management for salmon in the AYK region has little effect on annual spawning escapements of salmon due to low levels of harvest. Sport fishing gear is inherently inefficient and catch rates are variable. Bag limits are low in number and the focus of many anglers is on catching and releasing salmon, not on harvest. In recent years, catch-and-release fishing has increased and the proportion of salmon harvested from the total sport catch has declined. Catch-and-release fishing has been controversial with some local residents. Sport fisheries often occur upstream of, and after, the subsistence and commercial fisheries have completed their harvests. Maintaining reliable fishing opportunities are particularly critical to the few, small volume, AYK sport fish guide businesses. Clients generally arrange to fish several months before the start of the season. This small industry adds diversity in economic opportunities in rural Alaska. An inseason closure of the sport fishery for salmon can have a devastating economic impact on these small businesses.
APA, Harvard, Vancouver, ISO, and other styles
3

"Advances in Understanding Landscape Influences on Freshwater Habitats and Biological Assemblages." In Advances in Understanding Landscape Influences on Freshwater Habitats and Biological Assemblages, edited by Chanté D. Davis, Clinton W. Epps, Rebecca L. Flitcroft, and Michael A. Banks. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874561.ch3.

Full text
Abstract:
&lt;i&gt;Abstract.&lt;/i&gt;—Habitat fragmentation, land use practices, and flow impediments modify the natural course of rivers, disrupting connectivity and subsequently affecting dispersal and gene flow in aquatic organisms. Many of the relationships between the physical river network and the genetic structure of populations are not well understood. Riverscape genetics is a developing field that uses population genetic metrics to assess genetic structure within the context of the environmental variables that drive functional connectivity in a river network. Here, we applied an effective distance network approach to characterize the effects of hydrology in shaping neutral genetic population structure of fall-run Chinook Salmon &lt;i&gt;Oncorhynchus tshawytscha &lt;/i&gt;within a small, coastal Oregon catchment. We evaluated whether gene flow was limited by (1) site-specific features occurring within spawning habitat, using a dissimilarity matrix, and (2) the cumulative effect of the environment accrued while traveling en route between reaches. We found that Chinook Salmon that spawned at higher elevations (site specific effects) after traversing steeper gradients (en-route effects) were more genetically distinct from individuals that traversed gradual gradients and spawned at lower elevations. This effect (isolation by resistance) was distinguishable from isolation by distance, which was not detected among spawning groups. Our study enhanced interpretation of habitat heterogeneity in constraining gene flow and spatial genetic structure among reaches within a small, coastal catchment. Given that smaller catchments may hold life history 36 variation that is important to long-term population persistence, there is need to understand these relationships that maintain genetic diversity.
APA, Harvard, Vancouver, ISO, and other styles
4

"Pacific Salmon: Ecology and Management of Western Alaska’s Populations." In Pacific Salmon: Ecology and Management of Western Alaska’s Populations, edited by Edward V. Farley, James Murphy, Jamal Moss, Angela Feldmann, and Lisa Eisner. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874110.ch15.

Full text
Abstract:
&lt;em&gt;Abstract.&lt;/em&gt;—During the past five years (2002–2006), the Auke Bay Laboratory’s Ocean Carrying Capacity program conducted surveys of western Alaska juvenile salmon &lt;em&gt;Oncorhynchus &lt;/em&gt;spp. along the eastern Bering Sea shelf. The goal of our juvenile salmon research is to understand mechanisms underlying the effects of the environment on the distribution, migration, and growth of juvenile salmon in the eastern Bering Sea. The primary findings indicated that there were spatial variations in distribution among species; juvenile coho &lt;em&gt;O. kisutch &lt;/em&gt;and Chinook &lt;em&gt;O. tshawytscha &lt;/em&gt;salmon tended to be distributed nearshore and juvenile sockeye &lt;em&gt;O. nerka&lt;/em&gt;, chum &lt;em&gt;O. keta&lt;/em&gt;, and pink &lt;em&gt;O. gorbuscha &lt;/em&gt;salmon tended to be distributed further offshore. In general, juvenile salmon were largest during 2002 and 2003 and smallest during 2006, particularly in the northeastern Bering Sea (NEBS) region. Fish, including age-0 pollock &lt;em&gt;Theragra chalcogramma &lt;/em&gt;and Pacific sand lance &lt;em&gt;Ammodytes hexapterus &lt;/em&gt;were important components of the diets for all species of juvenile salmon in some years. However, annual comparisons of juvenile salmon diet indicated a shift in primary prey for many of the salmon species during 2006 in both the NEBS and southeastern Bering Sea (SEBS) regions. In addition, the average CPUE of juvenile salmon fell sharply during 2006 in the SEBS region. It is speculated that spring sea surface temperatures (SST’s) on the eastern Bering Sea shelf impact the growth and marine survival rates of juvenile western Alaska salmon through bottom-up control in the ecosystem. Cold spring SST’s lead to lower growth and marine survival rates for juvenile western Alaska salmon; warm spring SST’s have the opposite effect.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Chinook salmon – Effect of insecticides on"

1

Liscom, Kenneth. Radio-Tracking Studies of Adult Chinook Salmon and Steelhead to Determine the Effect of ''Zero'' River Flow During Water Storage at Little Goose Dam on the Lower Snake River, Final Report of Research. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/6415302.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!