Bibliografías temáticas / Oncorhynchus kisutch

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Literatura académica sobre el tema "Oncorhynchus kisutch"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 5 de febrero de 2022

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Artículos de revistas sobre el tema "Oncorhynchus kisutch"

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Hatai, Kishio y Gen-Ichi Hoshiai. "Saprolengniasis in Cultured Coho Salmon (Oncorhynchus kisutch)." Fish Pathology 27, n.º 4 (1992): 233–34. http://dx.doi.org/10.3147/jsfp.27.233.

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Plisetskaya, E., H. G. Pollock, J. B. Rouse, J. W. Hamilton, J. R. Kimmel y A. Gorbman. "Characterization of coho salmon (Oncorhynchus kisutch) insulin". Regulatory Peptides 11, n.º 2 (junio de 1985): 105–16. http://dx.doi.org/10.1016/0167-0115(85)90071-0.

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Kabata, Z., D. J. Whitaker y J. W. Bagshaw. "Kudoa thyrsitis (Gilchrist) (Myxosporea: Multivalvulida) in coho salmon, Oncorhynchus kisutch (Walbaum)". Canadian Journal of Zoology 64, n.º 4 (1 de abril de 1986): 1038–40. http://dx.doi.org/10.1139/z86-155.

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An unusual case of infection of coho salmon, Oncorhynchus kisutch (Walbaum), in British Columbia, Canada, with a myxosporean Kudoa thyrsitis (Gilchrist) is described. This first report of Kudoa parasitizing a member of the genus Oncorhynchus is interesting also because of the unusual site of Kudoa in the fish, the cardiac muscle.
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White, M. R. "Primitive Neuroectodermal Neoplasia in Coho Salmon, Oncorhynchus kisutch". Veterinary Pathology 41, n.º 1 (enero de 2004): 72–74. http://dx.doi.org/10.1354/vp.41-1-72.

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Benfey, T. J., H. M. Dye y E. M. Donaldson. "Induced vitellogenesis in triploid coho salmon (Oncorhynchus kisutch)". Aquaculture 85, n.º 1-4 (marzo de 1990): 318. http://dx.doi.org/10.1016/0044-8486(90)90032-i.

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Plisetskaya, E. M., H. G. Pollock, J. B. Rouse, J. W. Hamilton, J. R. Kimmel, P. C. Andrews y A. Gorbman. "Characterization of coho salmon (Oncorhynchus kisutch) islet somatostatins". General and Comparative Endocrinology 63, n.º 2 (agosto de 1986): 252–63. http://dx.doi.org/10.1016/0016-6480(86)90163-2.

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Jackson, Leland J., Stephen R. Carpenter, Jon Manchester-Neesvig y Craig A. Stow. "PCB Congeners in Lake Michigan Coho (Oncorhynchus kisutch) and Chinook (Oncorhynchus tshawytscha) Salmon". Environmental Science & Technology 35, n.º 5 (marzo de 2001): 856–62. http://dx.doi.org/10.1021/es001558+.

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Renfree, Josiah S., Sean A. Hayes y David A. Demer. "Sound-scattering spectra of steelhead (Oncorhynchus mykiss), coho (O. kisutch), and Chinook (O. tshawytscha) salmonids". ICES Journal of Marine Science 66, n.º 6 (9 de abril de 2009): 1091–99. http://dx.doi.org/10.1093/icesjms/fsp069.

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Abstract Renfree, J. S., Hayes, S. A., and Demer, D. A. 2009. Sound-scattering spectra of steelhead (Oncorhynchus mykiss), coho (O. kisutch), and Chinook (O. tshawytscha) salmonids. – ICES Journal of Marine Science, 66: 1091–1099. A recently developed method for measuring total target strength (TTS) allows calculation of the absolute scattered energy from fish over a broad-bandwidth signal. This technique uses the ratio of coherent and incoherent sound fields reflected off fish swimming in tanks. In stark contrast to other acoustic methods, this technique works best in reverberant conditions, is self-calibrating, and conveniently provides measurements of sound-scattering spectra for possible target identification. It has been used to successfully characterize the scattering spectra of marine life such as anchovy, sardine, and krill. In this experiment, the broad-bandwidth scattering spectra are characterized for the salmonids steelhead (Oncorhynchus mykiss), coho (Oncorhynchus kisutch), and Chinook (Oncorhynchus tshawytscha). The TTS measurements demonstrate that the scattering spectra for these species are similar, yet discernible. These unique scattering spectra may provide means for acoustically identifying and enumerating such targets in rivers or streams. Having effective acoustic methods for assessing salmon abundance could become a major addition to currently available measurement tools and provide a new, low-impact assessment technique for both commercial and endangered populations.
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Luzzana, Umberto, Ronald W. Hardy y John E. Halver. "Dietary arginine requirement of fingerling coho salmon (Oncorhynchus kisutch)". Aquaculture 163, n.º 1-2 (abril de 1998): 137–50. http://dx.doi.org/10.1016/s0044-8486(98)00228-2.

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Berghe, Eric P. van Den y Mart R. Gross. "Length of breeding life of coho salmon (Oncorhynchus kisutch)". Canadian Journal of Zoology 64, n.º 7 (1 de julio de 1986): 1482–86. http://dx.doi.org/10.1139/z86-221.

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Since Pacific salmon (Oncorhynchus spp.) die on the breeding grounds after spawning, duration of individual life may affect survival of deposited eggs. In addition, breeding life of both sexes has implications for estimates of size of spawning populations. We therefore examined the contributions of body size, population density, water level, season, and year to length of breeding life in individual coho salmon (O. kisutch). Age 3 breeding males and females lived an average of 9 days (range, 2–30 days), and 2-year-old "jack" males averaged 8 days (range, 2–21 days). Sixteen percent of the variance among age 3 males and 44% of the variance among females could be explained by the variables examined. Density of adults made a significant negative contribution to life-span, while water level, season, and year were insignificant. Body size was the most important variable in explaining breeding life-span, being positively related and accounting for 10% and 36% of the variance in 3-year-old males and females, respectively. In contrast, none of these variables explained the observed variation in jack male breeding life. The differences between the sexes and between 2- and 3-year-old males are consistent with levels of competition on the breeding grounds. We show that the results on individual body size and breeding life span can be used to offset biases in population estimates.
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Tesis sobre el tema "Oncorhynchus kisutch"

1

Watters, Jason Vincent. "Cost avoidance in mating systems : theory and lessons from coho salmon (Oncorhynchus kisutch) /". For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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Courtenay, Simon Charles. "Learning and memory of chemosensory stimuli by underyearling coho salmon Oncorhynchus kisutch (Walbaum)". Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29080.

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This study addressed the hypothesis that coho salmon (Oncorhynchus kisutch) learn and remember the odours of their natal environment. During one or more of the embryo, alevin and early fry (first 14 d) stages, fish were exposed to the artificial odorant morpholine, natural odorants generated by conspecifics, or creek water. After an interval of at least 1 month the preference of fry for an odorant was tested in a Y-maze and compared to that of naive fry. Increased preference was interpreted as recognition. Fish exposed during any or all of the embryo, alevin, or early fry stages showed greater preference for morpholine than naive fish when tested 54-125 d after exposure. In addition, previously exposed fish responded to morpholine with greater heart rate reduction (another measure of recognition) than naive fish in tests 477-532 d after exposure. Exposure to the odour of similarly-aged members of another family of the same population during the alevin stage, and to that of a second family during the early fry stage resulted in increased preference for the alevin-stage odour by one of four test groups, for the fry-stage odour by another group, and for both odours by a third group, in Y-maze tests conducted at least 32 d after exposure. Subsequent experiments revealed preference to be an insensitive measure of recognition because it is greatly influenced by odour concentration and possibly other odour characteristics which differ between families. Members of the Quinsam River population exposed throughout the embryo, alevin, and early fry stages to the odour of similarly-aged members either the Big Qualicum River or Puntledge River populations each preferred the familiar odour when tested 69-79 d after exposure. In addition to familiarity, preference among population-odours was found to be influenced by quantity of odour. Quinsam, Big Qualicum, and Puntledge fish each preferred water conditioned by faeces of members of their own population over blank water and in one of two experiments over water conditioned by faeces of non-population members, suggesting that at least some of the odorants mediating intraspecific discriminations are present in faeces. Exposure to creek water for a 1 month period centered around swimup did not result in greater preference than that shown by naive fish for creek water over well water or either of two river waters in tests performed at least 58 d after exposure. It is concluded that coho form long-term memories of at least some artificial and natural odours in early life and that learning is not restricted to a brief critical period of development.
Science, Faculty of
Zoology, Department of
Graduate
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3

McGeer, James C. "Physiological response to challenge tests in six stocks of coho salmon Oncorhynchus kisutch". Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30111.

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Coho salmon (Oncorhynchus kisutch) from six hatcheries operated by the Canadian Department of Fisheries and Oceans Salmonid Enhancement Project, were reared in a common facility and then subjected to a series of standardized challenge tests. Results suggest that there are genetically based differences in the response to stressful challenges among stocks of coho salmon from southern British Columbia. The challenge tests were: saltwater (30ppt); saltwater and an increase in temperature (30ppt and 4°C); high pH (9.4 and 10.0); low pH (3.55, 3.65, 3.75 and 4.1); thermal tolerance (1°C/h); and handling (30s netting). The measured parameters were plasma sodium and chloride ion concentrations for the saline and pH challenges, time to dysfunction in the thermal tolerance challenge and plasma glucose concentration in the handling challenge. No differences among stocks were found in responses to the high pH and thermal tolerance challenges. The Chehalis River stock had the smallest plasma ion increase in salt water but showed the largest plasma ion decrease in acidic waters. In some of the low pH challenges the Tenderfoot Creek stock showed less plasma ion loss than other stocks. The stock from Eagle River had the lowest plasma glucose concentration increase during handling challenges. The combined saltwater and temperature increase challenge demonstrated the cumulative effect that stressors can have. Sampling associated with the handling challenges revealed a diurnal fluctuation in resting plasma glucose concentrations. The low pH and handling challenges showed that stock performance and the magnitude of the response observed varied with rearing conditions. Although there was some variation in the magnitude of the stock response to challenges between the two rearing conditions used, differences among stocks were consistent. When the response to all challenges were assembled into a relative challenge response profile (or performance profile), each stock was unique.
Land and Food Systems, Faculty of
Graduate
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Fernández, Leyton Leonardo Eladio. "Estimación parámetros genéticos para rasgos de peso alevín, peso smolt y peso cosecha en salmón coho (Oncorhynchus kisutch) cultivado en Chiloé". Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/150883.

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Tesis para optar al Grado de Magíster en Ciencias de la Acuicultura
Se entregan los parámetros genéticos de heredabilidad, correlaciones genéticas, y ganancia genética estimados para peso alevín, peso smolt y peso cosecha de dos líneas, año par e impar, de salmón Coho (Oncorhynchus kisutch), a partir de seis y cuatro generaciones respectivamente, del programa de reproducción de un núcleo comercial, en Chiloé, Región de Los Lagos. Se estima el nivel de consanguinidad alcanzado para cada línea en las cinco generaciones. La metodología utilizada considera el desove de reproductores individualizados, la incubación de ovas y desarrollo inicial de alevines en unidades segregadas por cada familia generada, marcaje individual de ejemplares juveniles y crecimiento en comunidad, con muestreos periódicos de peso corporal. La metodología de evaluación para la estimación de los parámetros genéticos fue el ‘modelo animal’ y los softwares Pedigree Viewer y MTDFREML.
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Afonso, Luis Orlando Bertolla. "The effects on inhibiting estrogen production on sexual development in coho salmon (Oncorhynchus kisutch)". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://hdl.handle.net/2429/6852.

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The effects of inhibiting estrogen production on sexual development in coho salmon (Oncorhynchus kisutch) were investigated in this study through in vivo and in vitro experiments, using an aromatase inhibitor. In the in vivo studies female were injected with the aromatase inhibitor Fadrozole during vitellogenesis and close to final maturation, and males during spermatogenesis. In both females and males the effects of Fadrozole were investigated by determining the changes in plasma sex steroid levels (17β-estradiol, 17α-20p-P, testosterone and 11-ketotestosterone) before and several times after intraperitonial injection with different doses of Fadrozole, and by evaluating the reproductive development. In the in vitro studies the effects of Fadrozole, gonadotropins (GTH I and GTH II), and steroid hormone precursors (testosterone and 17α-hydroxyprogesterone) on steroid hormone secretion (17β-estradiol, 17α-20β-P, and testosterone) by coho salmon ovarian follicles were determined during vitellogenesis (immature and central germinal vesicle) and close to final maturation (peripheral germinal vesicle). The in vivo experiments in females close to final maturation showed that injection of the aromatase inhibitor Fadrozole was effective in lowering plasma 17β-estradiol levels, and an associated increase in plasma 17α-20β-P levels occurred, indicating that the shift between plasma 17β-estradiol biosynthesis and 17α-20β-P biosynthesis, which is characteristic of maturating fish, was advanced by treatment with Fadrozole. It was also shown that Fadrozole can be used as a tool to induce ovulation in coho salmon. In vitellogenic females Fadrozole reduced plasma 17β-estradiol levels in a dose and time dependent manner, and increased plasma 17α-20β levels prematurely also in a dose and time dependent manner. The switch from 17β-estradiol to 17α-20β-P biosynthesis was transient in the groups that received only one injection. The study also showed that multiple injections with Fadrozole arrested ovarian development, indicating Fadrozole may have a potential as a tool to regulate sexual development in salmon. In males, injection with Fadrozole inhibited 17β-estradiol secretion in the brain and caused a premature and transient increase in plasma 17α-20β-P levels. Multiple injections caused further increases in plasma 17α-20β-P, and 16 days after the beginning of the experiment the treatment groups which received the highest doses of Fadrozole (10 mg/kg and 5 x 10 mg/kg) started to spermiate, suggesting that the administration of aromatase inhibitors such as Fadrozole may provide a means of accelerating spermiation in salmonids and potentially other species of fish. The series of in vitro experiments demonstrated that Fadrozole is capable of inhibiting 17β-estradiol secretion throughout the periovulatory period, and that inhibition of 17β-estradiol per se does not elicit 17α-20β-P secretion, showing that gonadotropin is necessary for its secretion. It was also evident that 17p-estradiol secretion is dependent on availability of the substrate testosterone, which in turn is secreted in response to the gonadotropins. On the other hand 17α-20β-P secretion is directly dependent on stimulation of 20β-hydroxysteroid dehydrogenase by the gonadotropins, especially GTH II. These experiments demonstrated that the aromatase inhibitor Fadrozole can be used as tool to study mechanisms involved in the regulation of sexual development in fish. Also an aromatase inhibitor such as Fadrozole could be used close to final maturation to advance ovulation in females and spermiation and males and during vitellogenesis to inhibit reproductive development in females.
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Alexander, George. "The role of thyroid hormones in visual pigment changes in juvenile coho salmon, Oncorhynchus kisutch". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ37680.pdf.

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Gaffney, Leigh Phillippa. "Colour matters : coho salmon (Oncorhynchus kisutch) prefer and are less aggressive in darker coloured tanks". Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51509.

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Fish are capable of colour vision and certain colours have been shown to affect growth and survival, skin colour, stress response, and reproduction. Beyond these physiological consequences, colour has also been shown to affect aggression levels, which is a widespread problem in aquaculture. The compatibility of fish with tank colour has been largely neglected within the aquaculture industry. Common practice is to use light blue tanks but there is no scientific basis for this choice. Closed containment aquaculture systems provide a good model to investigate the effects of tank colour on fish. Though closed containment aquaculture systems provide the opportunity for full control of environmental conditions, little research to date has investigated which parameters within these systems promote fish welfare. The aim of this study was to assess preferences of coho salmon for tank colour and determine the effects of colour on aggression. Coho salmon (n=100) were randomly assigned to 10 tanks, each bisected to allow fish to choose between two colours. Using a Latin-square design, each tank was tested with each of the following colour choices: blue vs. white, light grey, dark grey, and black, as well as black vs. white, light grey, dark grey, and a mixed dark grey/black pattern. Fish showed a strong preference for black over all other tank background options (p < 0.0001) with the exception of pattern, which was still significant but slightly less strong (p < 0.01). Moreover, darker colours in the environment resulted in lower rates of aggressive behaviours compared to lighter colours (p < 0.0001). These results present the first evidence that darker tanks are preferred by and decrease overall tank aggression levels in salmonids.
Land and Food Systems, Faculty of
Graduate
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Grand, Tamara C. "Habitat selection in juvenile coho salmon, Oncorhynchus kisutch, the effects of intraspecific competition and predation risk". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq24310.pdf.

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Poblete, Sánchez Carolina del Carmen. "Cuantificación de histamina por HPLC y CZE en salmón coho, (Oncorhynchus kisutch) durante su almacenamiento refrigerado". Tesis, Universidad de Chile, 2005. http://repositorio.uchile.cl/handle/2250/105418.

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Memoria para optar al título de Ingeniero en Alimentos
Dentro de los índices de calidad, que permiten evaluar la frescura del pescado, está la determinación del contenido de aminas biogénicas. La principal intoxicación, debido a la presencia de altos niveles de aminas biogénicas, es conocida como intoxicación-histamínica, la cual es producida por altos niveles de histamina, que pueden ser generados, por la acción microbiana, cuando el pescado no es manipulado higiénicamente y es sometido a altas temperaturas. En el presente estudio se realizó una cuantificación del contenido de histamina en Salmón coho (Oncorhynchus kisutch)refrigerado (0 - 2ºC) por un período de 24 días. Se realizaron controles de histamina a los 0, 3, 6, 10, 12, 17, 19 y 24 días de almacenamiento. Se utilizaron dos técnicas analíticas: cromatografía líquida de alta resolución (HPLC) y cromatografía capilar zonal (CZE), las cuales fueron, previamente, evaluadas por el proceso de validación limitada, para dar confiabilidad a la cuantificación del analito en la muestra. Ambas técnicas analíticas presentaron resultados satisfactorios en la validación. Demostrándose, que la CZE es una reciente y ventajosa posibilidad, debido a que esta técnica mostró mejores resultados. La formación de histamina en Salmón coho almacenado refrigerado, fue nula hasta el día 12 de almacenamiento; pero aumentó progresivamente a partir del día 17. El Salmón coho, almacenado refrigerado, por 24 días, registró niveles de concentración de histamina, bajo el límite establecido por SERNAPESCA para pescados escómbridos y relacionados con escómbridos
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Isidro, Cristóbal Helsi María [UNESP]. "Depressão endogâmica em características de crescimento e resistência a Piscirickettsia salmonis em salmão coho (Oncorhynchus kisutch)". Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152017.

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Consejo Nacional de Ciencia y Tecnología (CONACYT)
Os programas de melhoramento em espécies aquícolas apresentam, no geral, um número restrito de famílias e um pequeno tamanho efetivo populacional, levando ao acasalamento de animais aparentados e, consequentemente, ao aumento da endogamia. Por sua vez, maiores níveis de endogamia tendem a ocasionar queda no desempenho dos animais causada pela depressão endogâmica. O objetivo deste estudo foi estimar os níveis de endogamia e depressão endogâmica sobre as características de peso à despesca, comprimento à despesca e resistência a Piscirickettsia salmonis em uma população de salmão coho. A resistência a Piscirickettsia salmonis foi definida como o dia da morte de cada peixe após desafio conduzido em dois anos, com média de 42 dias em 2012 e 14 dias no ano de 2014. Foi utilizado um banco de dados composto por 53.504 observações, provenientes de nove gerações e 930 famílias. A estimação dos componentes de variância e endogamia foram obtidas utilizando o programa computacional AIREMLF90 e os valores de depressão endogâmica foram estimados a partir de um modelo animal. Os valores observados para o coeficiente de endogamia foram crescentes ao longo das gerações, com uma taxa média máxima de 8,75% no ano de 2014. A depressão endogâmica afetou em maior nível as características de peso à despesca e dia de morte, com redução de 6,4 e 9,2% no desempenho dos animais, respectivamente, para o nível máximo de endogamia observado (30%). Os resultados indicam a necessidade de uso de estratégias mais efetivas de controle da endogamia para a manutenção do progresso genético do programa de melhoramento de salmão coho.
Aquaculture breeding programs present, in general, low number of families and reduced effective population size, resulting in mating of related animals and, consequently, increased level of inbreeding. High inbreeding coefficient may negatively impact the animals’ performance due to inbreeding depression. The objective of this study was to estimate inbreeding coefficient and inbreeding depression on growth traits and resistance against Piscirickettsia salmonis in a coho salmon population. Resistance against P. salmonis was defined as days to death of each fish after being challenged in two different years, with an average of 42 days in 2012 and 14 days in 2014. Data of 53,504 animals from 930 families was analyzed. Variance components were estimated using the software AIREMLF90, and inbreeding depression was estimated under an animal model. An increasing rate of inbreeding was observed, attaining an average of 8.75% in 2014. Inbreeding depression was more pronounced for harvest weight (PD) and days to death (DM), in comparison with harvest length. At the highest observed inbreeding level (30%), the estimated reduction caused by inbreeding depression was equal to 6,4% for PD and 9,2% for DM. The results indicate the necessity to control inbreeding more effectively for the studied coho salmon population, to guarantee genetic progress in the long term.
CONACYT: 579741/410470
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Libros sobre el tema "Oncorhynchus kisutch"

1

DeVault, David S. Contaminant analysis of 1982 fall run coho salmon (Oncorhynchus Kisutch). Chicago, Ill: The Office, 1985.

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2

Rich, Johnson. Assessment of the Skagit River system's coho rearing potential. [Olympia, Wash]: State of Washington, Dept. of Fisheries, 1986.

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Rich, Johnson. Assessment of the Skagit River system's coho rearing potential. [Olympia, Wash]: State of Washington, Dept. of Fisheries, 1986.

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Rich, Johnson. Assessment of the Skagit River system's coho rearing potential. [Olympia, Wash]: State of Washington, Dept. of Fisheries, 1986.

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5

Durkin, Joseph T. Migrations of juvenile coho salmon, Oncorhynchus kisutch, into the Columbia River estuary, 1966-71. Seattle, Wash: National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest and Alaska Fisheries Center, 1985.

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6

Murray, John B. Sport effort, harvest, and escapement of coho salmon (Oncorhynchus kisutch) in select Kodiak Island Archipelago streams, 1987. Juneau, Alaska: Alaska Dept. of Fish and Game, Division of Sport Fish, 1988.

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7

Vincent-Lang, Douglas S. Biological statistics for coho (Oncorhynchus kisutch) and sockeye (O. nerka) salmon in Resurrection Bay, Alaska, 1962-86. Juneau, Alaska: Alaska Dept. of Fish and Game, Division of Sport Fish, 1987.

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8

Delaney, Kevin. Sport harvest and enhancement evaluation of coho salmon (Oncorhynchus kisutch) in western Prince William Sound, Alaska, 1986. Juneau, Alaska: Alaska Dept. of Fish and Game, Division of Sport Fish, 1987.

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9

Murray, John B. Sport effort, harvest, and escapement of coho salmon (Oncorhynchus kisutch) in the Buskin River, Kodiak, Alaska 1986. Juneau, Alaska: Alaska Dept. of Fish and Game, Division of Sport Fish, 1987.

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Vincent-Lang, Douglas S. Sport harvest of coho (Oncorhynchus kisutch) and chinook (O. tshawytscha) salmon in Resurrection Bay, Alaska during 1987. Juneau, Alaska: Alaska Dept. of Fish and Game, Division of Sport Fish, 1988.

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Capítulos de libros sobre el tema "Oncorhynchus kisutch"

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Winton, J. R., C. K. Arakawa, C. N. Lannan y J. L. Fryer. "Isolation of a Reovirus from Coho Salmon (Oncorhynchus kisutch) in Oregon, USA". En Viruses of Lower Vertebrates, 257–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83727-2_23.

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Granath, Karla L., William W. Smoker, Anthony J. Gharrett y Jeffrey J. Hard. "Effects on embryo development time and survival of intercrossing three geographically separate populations of Southeast Alaska coho salmon, Oncorhynchus kisutch". En Genetics of Subpolar Fish and Invertebrates, 299–306. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-0983-6_24.

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GOBALET, KENNETH W. "A Native Californian’s Meal of Coho Salmon (Oncorhynchus kisutch) Has Legal Consequences for Conservation Biology". En Exploring Methods of Faunal Analysis, 87–96. Cotsen Institute of Archaeology Press, 2012. http://dx.doi.org/10.2307/j.ctvdjrqzg.9.

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"Mitigating Impacts of Natural Hazards on Fishery Ecosystems". En Mitigating Impacts of Natural Hazards on Fishery Ecosystems, editado por Sarah G. McCarthy, Julann Spromberg, John Incardona, Blake Feist, Jana Labenia, Mark S. Myers, Linda Rhodes, Gina Ylitalo, Tracy K. Collier y Nathaniel L. Scholz. American Fisheries Society, 2008. http://dx.doi.org/10.47886/9781934874011.ch5.

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<em>Poster Abstract</em>.—Beginning in the late 1990s, agencies in the greater Seattle area began conducting fall surveys for spawning salmon to evaluate the effectiveness of local stream restoration efforts. These surveys detected a surprisingly high rate of mortality among migratory coho salmon <em>Oncorhynchus kisutch </em>females that were in good physical condition but had not yet spawned. In addition, adult coho from several different streams showed a similar progression of symptoms (disorientation, lethargy, loss of equilibrium, gaping, fin splaying) that rapidly led to death. In recent years, prespawn mortality (PSM) has been observed in many lowland urban streams, with overall rates ranging from ~25% to 90% of the fall runs.
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"Propagated Fish in Resource Management". En Propagated Fish in Resource Management, editado por STEPHEN M. PASTOR. American Fisheries Society, 2004. http://dx.doi.org/10.47886/9781888569698.ch6.

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<em>Abstract.</em>—Approximately 80 million anadromous salmonids with coded-wire tags have been released from national fish hatcheries in the Columbia River basin. The U.S. Fish and Wildlife Service operates fish hatcheries throughout the basin, many of which are located hundreds of miles from the ocean. Spring Chinook salmon <em>Oncorhynchus tshawytscha </em>is the most widely raised species. Coho salmon <em>O. kisutch</em>, steelhead <em>O. mykiss</em>, and both tule and upriver bright fall Chinook are raised at fewer locations, with fall Chinook being raised only in the lower basin. Releases have produced over one hundred thousand observed recoveries, seventy-five thousand of which were in the Columbia River basin. Although tagging was initially inconsistent, practically all groups of fish released since brood year 1989 have been coded-wire tagged. In spite of uncertainties in the coding of recovery locations, and inconsistencies in the sampling and reporting of returning coded-wire tagged fish, recovery patterns can be distinguished.
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"Pacific Salmon: Ecology and Management of Western Alaska’s Populations". En Pacific Salmon: Ecology and Management of Western Alaska’s Populations, editado por Richard J. Beamish y Ruston M. Sweeting. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874110.ch56.

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<em>Abstract.</em>—Every year biologists around the rim of the subarctic Pacific eagerly wait to compare salmon abundances to expectations. After decades of surprises, it would seem logical to conclude that critical information is missing from the calculations of expected returns. Recent studies on the dynamics of coho salmon <em>Oncorhynchus kisutch </em>in the Strait of Georgia showed that growth in the early marine period strongly affects marine survival. In other studies, DNA stock identification methods are now being used to identify the feeding areas of various species and stocks of Pacific salmon throughout the subarctic Pacific. Thus, it is possible to relate regional ocean and climate conditions to marine survival. Complete life cycle studies that include information from freshwater, on ocean entry timing, early marine growth and ocean conditions in the locations that salmon populations feed or spend their winter are now technically possible. There is an international spirit of cooperation that, if properly funded, would support the focus of scientists to provide the missing information needed to produce reliable forecasts of adult Pacific salmon abundances.
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Hankin, David G., Michael S. Mohr y Ken B. Newman. "Basic concepts". En Sampling Theory, 11–22. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0002.

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This chapter provides a conceptual, visual and non-quantitative presentation of the basic principles of sampling theory which are developed in formal quantitative fashion in subsequent chapters. Included are summaries of (a) basic terminology used throughout the text (population, sample, estimator, estimate), (b) components of a sampling strategy (sampling frame, sampling design, estimator), (c) properties of estimators (bias, sampling variance, mean square error), and (d) sampling distribution of an estimator. Simple or familiar settings are used to illustrate the differences between simple frames (listings of population units from which a sample of units is selected) and complex frames (sampling units consist of groupings of population units), and to illustrate the different components of a sampling strategy. A bullseye target with associated dart throws is used to distinguish the important estimator properties of bias, sampling variance, and mean square error. The performances of randomized sampling procedures and purposive or judgment selection of “representative samples” are contrasted using two examples: (1) an historical contrast of estimated abundance of Oregon coastal coho salmon (Oncorhynchus kisutch) based on purposive representative reach surveys and on stratified random surveys, and (2) a repeatable classroom exercise pitting judgment sampling against simple random sampling for estimation of mean weight in a population of agates collected from northern California beaches.
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"Propagated Fish in Resource Management". En Propagated Fish in Resource Management, editado por DON D. MACKINLAY, SUSAN LEHMANN, JOAN BATEMAN y ROBERTA COOK. American Fisheries Society, 2004. http://dx.doi.org/10.47886/9781888569698.ch4.

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<em>Abstract.</em>—Of the many technologies used by the Canadian Salmonid Enhancement Program (SEP, established in 1979), hatcheries have been a major tool used to increase the freshwater survival of selected wild, native stocks of coho salmon <em>Oncorhynchus kisutch</em>, Chinook salmon <em>O. tshawytscha</em>, and chum salmon <em>O. keta</em>, both to address conservation concerns and to provide fishing opportunities. Salmonid Enhancement Program hatcheries have contributed substantially to the fisheries for coho and chum salmon, and less so to the fisheries for Chinook salmon. Although hatcheries have successfully provided high survival environments in freshwater, once released, artificially propagated fish are subject to the same environmental constraints and high mortality rates as are naturally propagated fish. Wild fish from both these components of coho and Chinook salmon stocks encountered substantially lower marine survival in the 1990s compared to the 1980s. Salmonid Enhancement Program tag studies show that marine survivals of hatchery salmon stocks have also been extremely variable, in spite of fairly consistent smolt release strategies. The approach taken by SEP to fully integrate hatchery and naturally produced components of endemic wild stocks of Pacific salmon, in conjunction with improvements in habitat and harvest management, should maximize long-term stock viability in Canada.
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"Advances in Fish Tagging and Marking Technology". En Advances in Fish Tagging and Marking Technology, editado por Laurie Weitkamp. American Fisheries Society, 2012. http://dx.doi.org/10.47886/9781934874271.ch13.

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<i>Abstract</i>.—The coded wire tag (CWT) database contains detailed information on millions of Pacific salmon <i>Oncorhynchus </i>spp. released from hatcheries or smolt traps and recovered in the Pacific Ocean and its tributaries. I used this information to compare marine distribution patterns of hatchery coho <i>O. kisutch </i>and Chinook <i>O. tshawytscha </i>salmon, based on recoveries of an estimated 1.99 million tagged salmon in coastal areas from southern California to the Bering Sea. Both species show distinct region-specific distribution patterns. Within these release regions, coho and Chinook salmon marine distributions were often similar, with fish distributed largely in local waters. In other regions, Chinook salmon were distributed father north than coho salmon originating from the same region. Only in two regions did the two species have fundamentally different marine distributions, with coho south of, and Chinook salmon north of, the natal stream. The analysis also revealed several “hot spots” of salmon diversity, identified by numerically few recoveries that represented many of the hatcheries used in the analysis. These hotspots may serve as important reservoirs for the continued existence of populations that are particularly vulnerable to climate change due to their restricted marine distributions. Although CWT technology is primitive by modern standards, the enormous amount of data collected in a consistent fashion over decades and contained in an online database provides a unique and underutilized opportunity to address many elusive questions about Pacific salmon.
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"Early Life Stage Mortality Syndrome in Fishes of the Great Lakes and Baltic Sea". En Early Life Stage Mortality Syndrome in Fishes of the Great Lakes and Baltic Sea, editado por Dale C. Honeyfield, John G. Hnath, Jim Copeland, Konrad Dabrowski y Jozef H. Blom. American Fisheries Society, 1998. http://dx.doi.org/10.47886/9781888569087.ch14.

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<em>Abstract.—</em>Muscle and egg samples from returning adult female Lake Michigan coho salmon <em>Oncorhynchus kisutch </em>were collected for thiamine analysis. Three groups of five females having low (2.5%), medium (42.4%), or high (92.6%) mean fry survival were selected for this study. Egg and muscle samples were collected at spawning and analyzed by high-performance liquid chromatography analysis for free thiamine, thiamine monophosphate (TP), and thiamine pyrophosphate (TPP). Egg concentrations of ascorbic acid, iron, zinc, magnesium, and potassium were measured. Twenty-five contaminants were also measured in muscle tissue of adult females. Total thiamine levels in eggs were similar between the medium and high survival groups but significantly lower in the low survival group. Eggs from the high and medium survival groups had higher levels of free thiamine and TP (<EM>P </EM>< 0.01) than eggs from the low survival group. There were no significant differences among the three groups in egg TPP. Muscle concentrations of TPP, TP, and total thiamine were similar among the three survival groups (<EM>P </EM>> 0.10). Correlations between fry survival and egg free thiamine (<em>r </em>= 0.61) and TP (<em>r </em>= 0.52) were observed. Fry survival was not correlated with adult muscle concentration of any form of thiamine or contaminant measured. Among the three groups, no differences in egg concentration were found for ascorbic acid, dehydroascorbic acid, iron, magnesium, zinc, and potassium. This research supports the hypothesis that low egg thiamine is an important factor in early mortality syndrome.
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Informes sobre el tema "Oncorhynchus kisutch"

1

Johnson, Amelia. A Landscape Approach to Determining and Predicting Juvenile Coho Salmon (Oncorhynchus kisutch) Movement Timing and Growth Patterns Prior to Ocean Entry. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.3149.

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