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Journal articles on the topic 'Sockeye salmon Sockeye salmon'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Hagerty, Ryan. "Sockeye Salmon." Fisheries 44, no. 9 (2019): 456. http://dx.doi.org/10.1002/fsh.10348.

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2

Ruggerone, Gregory T., and Brendan M. Connors. "Productivity and life history of sockeye salmon in relation to competition with pink and sockeye salmon in the North Pacific Ocean." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 6 (2015): 818–33. http://dx.doi.org/10.1139/cjfas-2014-0134.

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Sockeye salmon (Oncorhynchus nerka) populations from Southeast Alaska through British Columbia to Washington State have experienced similar declines in productivity over the past two decades, leading to economic and ecosystem concerns. Because the declines have spanned a wide geographic area, the primary mechanisms driving them likely operate at a large, multiregional scale at sea. However, identification of such mechanisms has remained elusive. Using hierarchical models of stock–recruitment dynamics, we tested the hypothesis that competition between pink (Oncorhynchus gorbuscha) and sockeye s

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3

Bugaev, V. F., and I. V. Tiller. "ON BIOLOGY OF SOCKEYE SALMON ONCORHYNCHGUS NERKA FROM THE ZHUPANOVA RIVER (EAST KAMCHATKA)." Izvestiya TINRO 193 (July 9, 2018): 78–87. http://dx.doi.org/10.26428/1606-9919-2018-193-78-87.

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Runs and escapements of sockeye salmon to the Zhupanova River have increased since 1985 with the run of 10.63 . 103 ind. instead of 1.45 . 103 ind. in 1960–1984, on average. The increasing was reasoned by change of the pink salmon odd year-classes domination in West Kamchatka to domination of even year-classes after the extremely high escapement in 1983. In 2005–2006, the sockeye salmon stock in the Zhupanova River became even more higher that continues till nowadays (runs of 68.20 . 103 ind. in 2005–2017, on average). This growth corresponds with general increasing of the pacific salmons abun

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4

Groot, C., T. P. Quinn, and T. J. Hara. "Responses of migrating adult sockeye salmon (Oncorhynchus nerka) to population-specific odours." Canadian Journal of Zoology 64, no. 4 (1986): 926–32. http://dx.doi.org/10.1139/z86-140.

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The ability of homing sockeye salmon (Oncorhynchus nerka) to discriminate between two populations of their own species on the basis of odours was tested in a Y-maze choice apparatus and by electrophysiological recordings from the olfactory rosette. The tests were performed with adult sockeye captured at the entrances to Great Central Lake and Sproat Lake on Vancouver Island, British Columbia, Canada. In behaviour experiments, Great Central Lake sockeye salmon were significantly attracted to chemical traces of their own population but no such preference was evident for the Sproat Lake sockeye s

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5

Gregory-Eaves, Irene, Bruce P. Finney, Marianne SV Douglas, and John P. Smol. "Inferring sockeye salmon (Oncorhynchus nerka) population dynamics and water quality changes in a stained nursery lake over the past ∼500 years." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 7 (2004): 1235–46. http://dx.doi.org/10.1139/f04-071.

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Historical and paleolimnological studies have demonstrated that environmental changes in the North Pacific can strongly affect sockeye salmon (Oncorhynchus nerka) abundances. Whether these marine shifts would be influential on sockeye salmon from all lake types, however, has not yet been studied. This study represents the first paleolimnological analysis of past sockeye salmon population dynamics in a stained nursery lake (Packers Lake, Alaska). We adopted a multiproxy approach to determine whether salmon-derived nutrients (inferred from δ15N) would be available for algal uptake (inferred from

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6

McGurk, M. D. "Comparison of fecundity-length-latitude relationships between nonanadromous (kokanee) and anadromous sockeye salmon (Oncorhynchus nerka)." Canadian Journal of Zoology 78, no. 10 (2000): 1791–805. http://dx.doi.org/10.1139/z00-106.

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This study compared fecundity-length-latitude relationships between 25 kokanee populations (15 natural and 10 introduced) and 48 sockeye salmon populations. Significant differences confirmed the hypothesis that the two Oncorhynchus nerka variants follow different reproductive strategies: (i) fecundity is more highly correlated with length for kokanee than for sockeye salmon; (ii) kokanee have higher fecundity-length regression slopes and lower intercepts than sockeye salmon; (iii) kokanee populations share a common fecundity-length regression slope, but sockeye salmon populations do not; and (

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7

Ogura, Miki, and Yukimasa Ishida. "Homing behavior and vertical movements of four species of Pacific salmon (Oncorhynchus spp.) in the central Bering Sea." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 3 (1995): 532–40. http://dx.doi.org/10.1139/f95-054.

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Four sockeye salmon (Oncorhynchus nerka), two chum salmon (O. keta), three pink salmon (O. gorbuscha), and four Chinook salmon (O. tshawytscha) with depth-sensing ultrasonic transmitters were tracked in the central Bering Sea to examine migration in the open sea. Ground speeds of maturing sockeye, chum, and pink salmon were at 0.54–0.66 m/s (0.88–1.17 fork lengths/s). Chinook salmon, probably immature fish, moved more slowly (0.34 m/s). Maturing individuals moved in particular directions and maintained their ground speeds and directions during day and night. The results also suggested that sal

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8

McKinnell, Skip, and Maxine Reichardt. "Early marine growth of juvenile Fraser River sockeye salmon (Oncorhynchus nerka) in relation to juvenile pink (Oncorhynchus gorbuscha) and sockeye salmon abundance." Canadian Journal of Fisheries and Aquatic Sciences 69, no. 9 (2012): 1499–512. http://dx.doi.org/10.1139/f2012-078.

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Mortality of salmon in the ocean is considered to be greatest during the first few months and that its magnitude is an inverse of growth. First year marine growth (M1) in two Fraser River sockeye salmon ( Oncorhynchus nerka ) populations was positively correlated, reflecting a shared oceanic experience as postsmolts. M1 declined abruptly in both populations after 1977, corresponding to a well-documented change in climate. The reduction in average M1 was not accompanied by a detectable reduction in average survival. In both populations, M1 was significantly greater in even years when juvenile p

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9

Devlin, Robert H. "Sequence of Sockeye Salmon Type 1 and 2 Growth Hormone Genes and the Relationship of Rainbow Trout with Atlantic and Pacific Salmon." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 8 (1993): 1738–48. http://dx.doi.org/10.1139/f93-195.

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Two types of growth hormone genes have been isolated from sockeye salmon (Oncorhynchus nerka) and their complete nucleotide sequence determined. The genes encode proteins of 210 amino acids and show considerable similarity to growth hormones characterized in other salmonids and fishes. The two genes presumably arose from a gene duplication event that generated the tetraploid condition in salmonids and are highly conserved in their coding regions. The sequences have diverged approximately 18% in noncoding regions since the gene duplication event and show numerous deletions and/or insertions. Is

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10

MacNutt, Meaghan J., Scott G. Hinch, Chris G. Lee, et al. "Temperature effects on swimming performance, energetics, and aerobic capacities of mature adult pink salmon (Oncorhynchus gorbuscha) compared with those of sockeye salmon (Oncorhynchus nerka)." Canadian Journal of Zoology 84, no. 1 (2006): 88–97. http://dx.doi.org/10.1139/z05-181.

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We assessed the prolonged swimming performance (Ucrit), metabolic rate (M-dotO2-min and M-dotO2-max), and oxygen cost of transport (COT) for upper Fraser River pink salmon (Oncorhynchus gorbuscha (Walbaum, 1792); 53.5 ± 0.7 cm FL) and sockeye salmon (Oncorhynchus nerka (Walbaum, 1792); 59.3 ± 0.8 cm FL) across a range of naturally occurring river temperatures using large Brett-type swim tunnel respirometers. Pink salmon were capable of similar relative critical swimming speeds (Ucrit) as sockeye salmon (2.25 FL·s–1), but sockeye salmon swam to a higher absolute Ucrit (125.9 cm·s–1) than pink s

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11

Ray, James D. M., Suresh A. Sethi, John H. Eiler, and John E. Joyce. "Prespawning Movements and Spawning Distribution of Sockeye Salmon in an Urbanizing Alaskan Lake." Journal of Fish and Wildlife Management 6, no. 2 (2015): 472–85. http://dx.doi.org/10.3996/112014-jfwm-083.

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Abstract The efficacy of fish habitat conservation in land planning processes in Alaska is often constrained by the extent of current knowledge of fish distributions and habitat use. In response to requests for information from land and salmon resource management stakeholders regarding Auke Lake sockeye salmon (Oncorhynchus nerka) status and life history, we examined the prespawning movements and spawning distribution of adult sockeye salmon to provide ecological information needed for Auke Lake watershed management. We used radiotelemetry to track the movements of 80 fish in the Auke Lake wat

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12

Farley, Edward V., Alexander Starovoytov, Svetlana Naydenko, et al. "Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon." ICES Journal of Marine Science 68, no. 6 (2011): 1138–46. http://dx.doi.org/10.1093/icesjms/fsr021.

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Abstract Farley, E. V., Starovoytov, A., Naydenko, S., Heintz, R., Trudel, M., Guthrie, C., Eisner, L., Guyon, J. R. 2011. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon. – ICES Journal of Marine Science, 68: 1138–1146. Overwinter survival of Pacific salmon (Oncorhynchus sp.) is believed to be a function of size and energetic status they gain during their first summer at sea. We test this notion for Bristol Bay sockeye salmon (O. nerka), utilizing data from large-scale fisheries and oceanographic surveys conducted during mid-August to September 2002–2008 and from F

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13

Connors, Brendan, Michael J. Malick, Gregory T. Ruggerone, et al. "Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 6 (2020): 943–49. http://dx.doi.org/10.1139/cjfas-2019-0422.

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Pacific salmon productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood. Using data from 47 North American sockeye salmon (Oncorhynchus nerka) populations, we present evidence that the magnitude and direction of climate and competition effects vary over large spatial scales. In the south, a warm ocean and abundant salmon competitors combined to strongly reduce sockeye productivity, whereas in the north, a warm ocean substantially increased productivity and offset the negative effects of competition at sea. From 2005 to 2015

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14

Mulcahy, D., R. J. Pascho, and W. N. Batts. "Testing of Male Sockeye Salmon (Oncorhynchus nerka) and Steel head Trout (Salmo gairdneri) for Infectious Hematopoietic Necrosis Virus." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 5 (1987): 1075–78. http://dx.doi.org/10.1139/f87-127.

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Infectious hematopoietic necrosis (IHN) virus has been isolated only rarely from whole milt samples of male sockeye salmon (Oncorhynchus nerka). In 3 yr of testing, virus incidences in males ranged from 0 to 13% when milt was sampled but were 60–100% with spleen or kidney. When IHN virus was isolated from sockeye salmon milt at titers less than 3.00 log10 plaque-forming units (pfu)/mL, the level of virus in the kidney or spleen exceeded 7.00 log10 pfu/g. Higher rates of IHN virus isolation from kidney or spleen than from milt were also generally found in steelhead trout (Salmo gairdneri), alth

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15

Pyper, Brian J., and Randall M. Peterman. "Relationship among adult body length, abundance, and ocean temperature for British Columbia and Alaska sockeye salmon (Oncorhynchus nerka), 1967–1997." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 10 (1999): 1716–20. http://dx.doi.org/10.1139/f99-167.

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Body length of adult Pacific sockeye salmon (Oncorhynchus nerka) has decreased significantly in recent years. We used 69 time series of age-specific body-length data (1967-1997) for 30 sockeye salmon stocks from southern British Columbia to western Alaska to test hypotheses about the effects of oceanographic conditions and competition on growth rate of sockeye salmon. Using principal components analysis (PCA), we constructed a single time series (PC1) that represented the dominant pattern of variability in length-at-age shared among these stocks. Taking into account time trends and autocorrela

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16

Ashihara, M., M. Suzuki, K. Kubokawa, et al. "Two differing precursor genes for the salmon-type gonadotropin-releasing hormone exist in salmonids." Journal of Molecular Endocrinology 15, no. 1 (1995): 1–9. http://dx.doi.org/10.1677/jme.0.0150001.

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ABSTRACT Salmon gonadotropin-releasing hormone (sGnRH) is considered to have an important role in the control of reproduction in salmonid fish. As a basis for understanding the physiological functioning of sGnRH at the molecular level, we characterized the nucleotide sequences of two types of cDNAs encoding the precursors of sGnRH in sockeye salmon (ss), Oncorhynchus nerka, by a cloning strategy based on reverse transcription-PCR. The two types of cDNAs are referred to as ss-pro-sGnRH-I and -II, and consisted of 435 and 481 bases respectively. Both precursors are predicted to contain a signal

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17

Leatherland, J. F., L. Lin, N. E. Down, and E. M. Donaldson. "Thyroid Hormone Content of Eggs and Early Developmental Stages of Five Oncorhynchus Species." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 12 (1989): 2140–45. http://dx.doi.org/10.1139/f89-264.

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Measurements were made of thyroxine (T4) and triiodothyronine (T3) levels in the embryos and larvae of five species of the genus Oncorhynchus. Pink salmon (O. gorbuscha) embryos and larvae contained relatively low levels of both T4 and T3 throughout the early developmental stages. Sockeye salmon (O. nerka) had the highest levels of T4, with coho (O. kisutch), chum (O. keta), and chinook salmon (O. tshawytscha) having similar total T4 content. The chinook salmon embryos contained the highest T3 content of the five species studied, pink, sockeye, and chum salmon embryos had relatively low levels

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18

Zaporozhets, G. V., and O. M. Zaporozhets. "State of stocks of pacific salmons in the basin of Avacha Bay (southeastern Kamchatka) in 1985–2019." Izvestiya TINRO 200, no. 2 (2020): 334–63. http://dx.doi.org/10.26428/1606-9919-2020-200-334-363.

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State of pacific salmon stocks is considered for the basins of the Avacha and Paratunka Rivers in 1985–2019. Significant decline of the stocks is noted that is associated with anthropogenic impact growth. Total number of producers for five salmon species in the Paratunka is almost twice higher than in the Avacha, with the largest portion of pink salmon, then chum salmon, lower portion of coho salmon, and the smallest portions of sockeye and chinook salmons, which need special protection. The main biological parameters of salmons are analyzed for both rivers, as body length, weight, fecundity,

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19

Blackett, Roger F. "Development and Performance of an Alaska Steeppass Fishway for Sockeye Salmon (Oncorhynchus nerka)." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 1 (1987): 66–76. http://dx.doi.org/10.1139/f87-008.

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A major introduced run of sockeye salmon (Oncorhynchus nerka) at Frazer Lake, Kodiak Island, Alaska, is perpetuated by an Alaska steeppass fishway at a 10-m-high falls on the outlet river. Experimental modifications of the fishway, which was inadequate by 1970 as the salmon run increased, improved salmon entry and passage. Sockeye passage over 4 yr was nearly equivalent in a steeppass of 60 m continuous length (22% slope) and an adjoining steeppass with three resting pools, but significant year-to-year differences in passage occurred between steeppasses. Resting tanks were beneficial for holdi

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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.

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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

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Quinn, Thomas P., Sayre Hodgson, and Charles Peven. "Temperature, flow, and the migration of adult sockeye salmon (Oncorhynchus nerka) in the Columbia River." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 6 (1997): 1349–60. http://dx.doi.org/10.1139/f97-038.

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We related the arrival timing of adult sockeye salmon (Oncorhynchus nerka) at a series of dams on the Columbia River (Bonneville, McNary, and Rock Island) and Snake River (Ice Harbor) to the changing flow and temperature regimes over the last several decades. The temperatures experienced by sockeye salmon have increased in the lower but not upper reaches of the system, and the flows experienced by the fish have decreased. The Bonneville-McNary travel rate increased from about 22 to 49 km/day, and sockeye salmon now pass McNary Dam about 11 days earlier than in 1954. Both travel rate and arriva

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Gustafson, R. G. "Evolution of Sockeye Salmon Ecotypes." Science 291, no. 5502 (2001): 251b—252. http://dx.doi.org/10.1126/science.291.5502.251b.

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23

Crossin, G. T., S. G. Hinch, A. P. Farrell, M. P. Whelly, and M. C. Healey. "Pink salmon (Oncorhynchus gorbuscha) migratory energetics: response to migratory difficulty and comparisons with sockeye salmon (Oncorhynchus nerka)." Canadian Journal of Zoology 81, no. 12 (2003): 1986–95. http://dx.doi.org/10.1139/z03-193.

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Pink salmon (Oncorhynchus gorbuscha) are generally considered weak upriver migrants relative to sockeye salmon (Oncorhynchus nerka), though this assertion is largely anecdotal. To assess energy-use patterns during migration, we collected pink salmon from two major Fraser River stocks (Weaver and Seton in British Columbia, Canada) in 1999 at three times and locations: (1) at the start of freshwater migration, (2) at the end of migration before spawning, and (3) immediately after spawning. We calculated the energy content of somatic and reproductive tissues, recorded several body measurements, a

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Abramova, L. S., A. V. Kozin, and A. S. Shashkov. "NMR — SPECTROSCOPY TECHNIQUE FOR SALMON FISH SPECIES QUALITY ASSESSMENT." Food systems 2, no. 4 (2019): 4–9. http://dx.doi.org/10.21323/2618-9771-2019-2-4-4-9.

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NMR-spectroscopy was used for development of the criteria which characterize the chilled and frozen fish quality. It has been shown that 1H-NMR experiments can be used as quality factor to measure the concentration of inosine, hypoxanthine and inosine-5’-monophosphate generated during the fish storage. The quality factor is expressed by the K1 correlates well with the sensory quality of chilled Atlantic salmon (Salmo Salar), whereas, quality factor H is more sensitive for measuring the quality characteristics of frozen pink salmon (Oncorhynchus gorbuscha), chum salmon (Oncorhynchus keta), sock

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Koval, M. V., O. B. Tepnin, S. L. Gorin, et al. "Factors determining spawning run dynamics and current state of sockeye salmon Oncorhynchus nerka resources in the Kamchatka River." Researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean 57, no. 57 (2021): 5–66. http://dx.doi.org/10.15853/2072-8212.2020.57.5-66.

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Hydrological regime and morphodynamics of the outlet part of the Kamchatka River, dynamics of mixing zone, patterns of juvenile Pacific salmon distribution and migration in the coastal waters of Kamchatsky Gulf in the zone of operating trap nets were analyzed on the results of complex field works prowided in summer period in 2018–2019; fishing and specifics of sockeye salmon spawning run in the river was described. In the course of analyzing the entire complex of available long-term data, an assessment of the likely impact of some key factors on the dynamics of anadromous migration of sockeye

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Brookson, Cole B., Martin Krkošek, Brian P. V. Hunt, Brett T. Johnson, Luke A. Rogers, and Sean C. Godwin. "Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 12 (2020): 1960–68. http://dx.doi.org/10.1139/cjfas-2020-0160.

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Fraser River Pacific salmon have declined in recent decades, possibly from parasitism by sea lice (Caligus clemensi and Lepeophtheirus salmonis). We describe the abundance of both louse species infesting co-migrating juvenile pink (Oncorhynchus gorbuscha), chum (Oncorhynchus keta), and sockeye (Oncorhynchus nerka) salmon over 5 years in the Discovery Islands and Johnstone Strait, British Columbia. The generalist louse, C. clemensi, was 5, 7, and 39 times more abundant than the salmonid specialist, L. salmonis, on pink, chum, and sockeye salmon, respectively. Caligus clemensi abundance was high

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Ruggerone, Gregory T. "Threespine stickleback aggregations create a potential predation refuge for sockeye salmon fry." Canadian Journal of Zoology 70, no. 5 (1992): 1052–56. http://dx.doi.org/10.1139/z92-147.

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Coho salmon (Oncorhynchus kisutch) frequently consume sockeye salmon (Oncorhynchus nerka) fry in Chignik Lake, Alaska, but have never been observed to consume threespine sticklebacks (Gasterosteus aculeatus), which are often closely associated with sockeye fry. Because coho salmon are visual predators and appear to avoid sticklebacks, a series of experiments was conducted in net pens to determine whether juvenile sockeye associated with threespine sticklebacks experienced less prédation than sockeye without sticklebacks and whether prey size affected prédation rates. Significantly fewer sockey

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Golub’, Elena V. "Age composition of Chukchi sockeye salmon Oncorhynchus nerka." Izvestiya TINRO 179, no. 4 (2014): 10–31. http://dx.doi.org/10.26428/1606-9919-2014-179-10-31.

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Long-term data on age composition for Chukchi populations of sockeye salmon are presented. Spawners of 23 ages are recognized in the period 1970-2013 for 10 populations: 2+, 3+, 0.1+, 0.2+, 0.3+, 0.4+, 0.5+, 1.1+, 1.2+, 1.3+, 1.4+, 1.5+, 2.1+, 2.2+, 2.3+, 2.4+, 2.5+, 3.1+, 3.2+, 3.3+, 3.4+, 4.2+, and 4.3+. The brood stock basis is formed by five- and six-year fish of 1-2-year freshwater feeding and 3-year marine feeding. The greatest diversity in the age composition is observed at the northern limit of the Asian sockeye salmon natural habitat - i.e. in the Seutakan and Achchen lake-river syste

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Hyatt, K. D., D. J. McQueen, K. S. Shortreed, and D. P. Rankin. "Sockeye salmon (Oncorhynchus nerka) nursery lake fertilization: Review and summary of results." Environmental Reviews 12, no. 3 (2004): 133–62. http://dx.doi.org/10.1139/a04-008.

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We reviewed 24 sockeye salmon (Oncorhynchus nerka) nursery lake experiments that involved whole-lake fertilization with appropriate treatment and control years. We found that: 21 of 21 studies showed that fertilization was associated with increased chlorophyll a concentrations, 16 of 16 showed increased zooplankton biomasses, 16 of 16 demonstrated increased average smolt weights, and 11 of 13 showed increased smolt biomasses. Studies involving assessments of egg-to-smolt survival were rare, but all (4 of 4) showed increased survival rates. Studies involving increased smolt-to-adult survival (i

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Zaporozhets, G. V., O. M. Zaporozhets, and M. G. Feldman. "Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019." Izvestiya TINRO 200, no. 3 (2020): 618–34. http://dx.doi.org/10.26428/1606-9919-2020-200-618-634.

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Data on quantitative distribution of early and late spawners of sockeye salmon in the Lake Nachikinskoye basin were collected in 2019 using quadcopter. Features of sockeye spawning in certain sectors of the lake coast and at the spawning stations are analyzed. The spawning starts earlier on the eastern coast, and then on the western coast. The late sockeye spawning is considered in details at the spawning stations on littoral shelves, on steep coastal slopes, in key limnocrenes, in algae fields at the depths up to 5 m, and in the river tributaries. Environmental conditions of the stations are

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Zaporozhets, O. M., G. V. Zaporozhets, and M. G. Feldman. "Investigation of the spawning sockeye salmon in the pool of the Nachikinskoe Lake (South-Western Kamchatka) with the help of a quadcopter in 2018." Researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean 1, no. 56 (2020): 35–62. http://dx.doi.org/10.15853/2072-8212.2020.56.35-62.

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The Nachikinskoe Lake and its tributaries were first examined in detail with the help of a quadrocopter during running and spawning of early and late sockeye salmon. Quantitative estimates of adult salmon filling in different areas of lake tributaries and its coasts were obtained. The number of spring sockeye salmon was estimated at ~30 thous. specs, and late — at ~145 thous. specs (summation of adults counted every ~2 weeks) and 140 thous. specs (127–153 thous. specs), by means of imitation model. According to the photos from the quadrocopter, the boundaries of the spawning grounds of the lat

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McKinnell, Skip. "Age-specific effects of sockeye abundance on adult body size of selected British Columbia sockeye stocks." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 5 (1995): 1050–63. http://dx.doi.org/10.1139/f95-103.

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Annual mean body lengths of adult sockeye salmon (Oncorhynchus nerka) covary systematically from year to year in major northern and central British Columbia stocks (Nass River, Skeena River, and Rivers Inlet). These positive correlations are greatest between sexes within rivers, followed by age-classes among rivers. A common factor or factors affecting sockeye length in the North Pacific Ocean is suggested. The mean length of age 1.3 sockeye salmon but not age 1.2 sockeye caught annually in these B.C. fisheries was negatively correlated with the magnitude of Bristol Bay (western Alaska) sockey

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Brett, J. R. "Production energetics of a population of sockeye salmon, Oncorhynchus nerka." Canadian Journal of Zoology 64, no. 3 (1986): 555–64. http://dx.doi.org/10.1139/z86-082.

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The life stages and population structure of sockeye salmon from Babine Lake, British Columbia, are outlined. The total biomass produced by an average cohort of smolts is determined by tracing the monthly growth and mortality rates for each of three age-classes during ocean life, based on models responsive to life history, temperature, and body weight. From an energy budget previously deduced for an average 4-year-old sockeye salmon, the growth efficiency of the cohort is derived (22.8%). Assumptions and possible sources of error are discussed, concluding with comments on the high energy conver

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Konovalov, S. M. "Parasites as indicators of biological processes, with special reference to sockeye salmon (Oncorhynchus nerka)." Canadian Journal of Fisheries and Aquatic Sciences 52, S1 (1995): 202–12. http://dx.doi.org/10.1139/f95-528.

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This paper reviews the applicability of parasites as indicators in studying the biology of their hosts, using examples drawn primarily from the extensive research that has been conducted on the sockeye salmon (Oncorhynchus nerka) by scientists of the former Soviet Union and Canada. The data obtained by these researchers has contributed to our knowledge of the feeding and wintering migrations of populations, i.e., local stock complexes, of sockeye and other Pacific salmon. In some local stocks of sockeye salmon, millions of fish carry such biological tags as specific parasites and scale marks t

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Essington, Timothy E., Thomas P. Quinn, and Victor E. Ewert. "Intra- and inter-specific competition and the reproductive success of sympatric Pacific salmon." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 1 (2000): 205–13. http://dx.doi.org/10.1139/f99-198.

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Individual female Pacific salmon fight for breeding space with conspecific and heterospecific females. We evaluated the consequences of this competition on the reproductive success of sockeye (Oncorhynchus nerka), chum (Oncorhynchus keta), and pink salmon (Oncorhynchus gorbuscha) in the Weaver Creek spawning channel, British Columbia. We hypothesized that differences in body size, relative abundance, and spawning date would influence the magnitude of interspecific interactions. Reproductive success (survival rate of eggs to emigrating fry) of the most abundant species, sockeye, was strongly an

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Smith, Gerald R., David R. Montgomery, N. Phil Peterson, and Bruce Crowley. "Spawning sockeye salmon fossils in Pleistocene lake beds of Skokomish Valley, Washington." Quaternary Research 68, no. 2 (2007): 227–38. http://dx.doi.org/10.1016/j.yqres.2007.03.007.

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AbstractAn assemblage of fossil sockeye salmon was discovered in Pleistocene lake sediments along the South Fork Skokomish River, Olympic Peninsula, Washington. The fossils were abundant near the head of a former glacial lake at 115 m elevation. Large adult salmon are concentrated in a sequence of death assemblages that include individuals with enlarged breeding teeth and worn caudal fins indicating migration, nest digging, and spawning prior to death. The specimens were 4 yr old and 45–70 cm in total length, similar in size to modern sockeye salmon, not landlocked kokanee. The fossils possess

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Zaporozhets, Oleg M., Galina V. Zaporozhets, and Zhanna Kh Zorbidi. "Dynamics of biological parameters of spawners of pacific salmons returned to the rivers of the Avachinsky Bay (south-eastern Kamchatka) in 1989-2014." Izvestiya TINRO 184, no. 1 (2016): 23–40. http://dx.doi.org/10.26428/1606-9919-2016-184-23-40.

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Dynamics of biological parameters for adults of chum, sockeye, pink, coho, and chinook salmons in the rivers of the Avachinsky Bay is analyzed. There is shown for three populations of sockeye salmon that general age of the returned adults correlates positively with duration of their fresh-water life but negatively with timing of their approach for spawning. Tendency to decreasing of weight is revealed for chinook females, but weight of their males is stable. Dynamics of weight and timing of spawning run is significantly different for pink and chum salmons of the rivers Avacha and Nalycheva. We

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Farley, Edward V., and Marc Trudel. "Growth Rate Potential of Juvenile Sockeye Salmon in Warmer and Cooler Years on the Eastern Bering Sea Shelf." Journal of Marine Biology 2009 (2009): 1–10. http://dx.doi.org/10.1155/2009/640215.

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A spatially explicit bioenergetics model was used to predict juvenile sockeye salmonOncorhynchus nerkagrowth rate potential (GRP) on the eastern Bering Sea shelf during years with cooler and warmer spring sea surface temperatures (SSTs). Annual averages of juvenile sockeye salmon GRP were generally lower among years with cooler SSTs and generally higher in offshore than nearshore regions of the eastern Bering Sea shelf during years with warmer SSTs. Juvenile sockeye salmon distribution was significantly (P<.05) related to GRP and their prey densities were positively related to spring SST (P

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Cartwright, Margaret A., David A. Beauchamp, and Mason D. Bryant. "Quantifying cutthroat trout (Oncorhynchus clarki) predation on sockeye salmon (Oncorhynchus nerka) fry using a bioenergetics approach." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 5 (1998): 1285–95. http://dx.doi.org/10.1139/f98-018.

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Although some sockeye salmon (Oncorhynchus nerka) enhancement programs achieve production goals in Alaskan lakes, others like the Margaret Lake project fall well below expected levels. We used bioenergetics model simulations, coupled with field sampling of predator diet and distribution, to quantify the intensity of cutthroat trout (Oncorhynchus clarki) predation on stocked sockeye salmon fry in Margaret Lake during 1993 and 1994. Model results indicated that, by September, cutthroat trout consumed an estimated 34-51 and 32-100% of the 200 000 and 100 000 sockeye salmon fry stocked in May 1993

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Holt, Carrie A., and Randall M. Peterman. "Long-term trends in age-specific recruitment of sockeye salmon (Oncorhynchus nerka) in a changing environment." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 12 (2004): 2455–70. http://dx.doi.org/10.1139/f04-193.

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Sibling age-class (sibling) models, which relate abundance of one age-class of adult sockeye salmon (Oncorhynchus nerka) to abundance of the previous age-class in the previous year, are commonly used to forecast abundance 1 year ahead. Standard sibling models assume constant parameters over time. However, many sockeye salmon populations have shown temporal changes in age-at-maturity. We therefore developed a new Kalman filter sibling model that allowed for time-varying parameters. We found considerable evidence for long-term trends in parameters of sibling models for 24 sockeye salmon stocks

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Mazumder, Asit, and Jim A. Edmundson. "Impact of fertilization and stocking on trophic interactions and growth of juvenile sockeye salmon (Oncorhynchus nerka)." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 8 (2002): 1361–73. http://dx.doi.org/10.1139/f02-111.

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Using 16 years of data on nutrients, plankton, and sockeye fry and smolts from Packers Lake, Alaska, we test the impact of nutrients and fry stocking on the growth and productivity of juvenile sockeye salmon (Oncorhynchus nerka). To enhance sockeye production, this lake was fertilized (19831996) and stocked annually (19871996) with sockeye fry. Before fertilization, the density of sockeye fry was low (<0.20 fry·m2), the size and biomass of Daphnia were low, and sockeye smolts were relatively small. Before stocking, all trophic levels responded positively to fertilization. The biomass and

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Hinch, Scott G., Nolan N. Bett, Erika J. Eliason, Anthony P. Farrell, Steven J. Cooke, and David A. Patterson. "Exceptionally high mortality of adult female salmon: a large-scale pattern and a conservation concern." Canadian Journal of Fisheries and Aquatic Sciences 78, no. 6 (2021): 639–54. http://dx.doi.org/10.1139/cjfas-2020-0385.

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In recent decades, the relative proportion of female sockeye salmon (Oncorhynchus nerka) on spawning grounds of several British Columbia populations has declined. Coincident with the decline has been large changes to oceanic, estuarine, and river migration environments. Over the past 30 years, numerous telemetry tracking and laboratory studies have examined mortality of adult Fraser River sockeye salmon during ocean and freshwater migrations. We reviewed 19 studies that provided 40 situations where male and female mortality could be directly compared. Female mortality averaged 2.1 times greate

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Healey, Michael. "The cumulative impacts of climate change on Fraser River sockeye salmon (Oncorhynchus nerka) and implications for management." Canadian Journal of Fisheries and Aquatic Sciences 68, no. 4 (2011): 718–37. http://dx.doi.org/10.1139/f2011-010.

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Anadromous Pacific salmon ( Oncorhynchus spp.) are vulnerable to climate change in both freshwater and marine habitats. I use a qualitative model to assess the cumulative effects of climate change across life stages and generations of Fraser River sockeye salmon ( Oncorhynchus nerka ) and other salmon species. The effects of climate change most relevant to Fraser River sockeye include warming of freshwater and marine habitats, altered hydrology in spawning rivers, reduced productivity in nursery habitats, and changed distribution and phenology of predator and prey species. The weight of eviden

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Groot, E. P., and D. F. Alderdice. "Fine structure of the external egg membrane of five species of Pacific salmon and steelhead trout." Canadian Journal of Zoology 63, no. 3 (1985): 552–66. http://dx.doi.org/10.1139/z85-082.

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Fine structure of the external egg membrane of five species of Pacific salmon (sockeye, Oncorhynchus nerka; pink, O. gorbuscha; chum, O. keta; coho, O. kisutch; and chinook, O. tshawytscha) and the anadromous steelhead trout (Salmo gairdneri), is examined and compared using the scanning electron microscope. Membrane thickness in fixed material varies for the six species as follows (micrometres, [Formula: see text]): sockeye, 34.15 ± 0.15; pink, 61.64 ± 1.53; chum, 53.05 ± 0.33; coho, 27.96 ± 0.48; chinook, 50.82 ± 0.74; steelhead, 30.74 ± 0.11. The membrane consists of a thin outermost layer,

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Fadeev, E. S., E. A. Shevlyakov, and M. G. Feldman. "COMPLEX MONITORING OF SALMON SPAWNERS ESCAPEMENT TO THE KAMCHATKA RIVER IN REAL TIME REGIME." Izvestiya TINRO 197 (July 5, 2019): 3–20. http://dx.doi.org/10.26428/1606-9919-2019-197-3-20.

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Complex method of quick quantitative evaluation of the spawners escapement to the Kamchatka River is developed for pacific salmons on the base of analysis of their passing dynamics through certain parts of the river (main stream, tributaries, spawning grounds). The runs of different temporal forms of anadromous salmons were separated taking into account their biological parameters using the data of biological analysis of commercial catches in Ust-Kamchatsky district. The spawners abundance was evaluated from CPUE value for the main stream where control catches of spawners were made in the peri

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Wagner, G. N., S. G. Hinch, L. J. Kuchel, et al. "Metabolic rates and swimming performance of adult Fraser River sockeye salmon (Oncorhynchus nerka) after a controlled infection with Parvicapsula minibicornis." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 9 (2005): 2124–33. http://dx.doi.org/10.1139/f05-126.

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Adult sockeye salmon (Oncorhynchus nerka) acquire infections with the myxosporean kidney parasite Parvicapsula minibicornis during their spawning migration in the Fraser River, British Columbia. Controlled infections with this parasite in wild sockeye salmon had no significant impact on plasma ionic status, metabolic rates, and initial maximum prolonged swimming performance (Ucrit) for fish ranked as either strongly, weakly, or noninfected by polymerase chain reaction analysis of kidney tissue. However, strongly infected fish had significantly lower second Ucrit and recovery ratio (8%) values,

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Putman, Nathan F., Erica S. Jenkins, Catherine G. J. Michielsens, and David L. G. Noakes. "Geomagnetic imprinting predicts spatio-temporal variation in homing migration of pink and sockeye salmon." Journal of The Royal Society Interface 11, no. 99 (2014): 20140542. http://dx.doi.org/10.1098/rsif.2014.0542.

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Animals navigate using a variety of sensory cues, but how each is weighted during different phases of movement (e.g. dispersal, foraging, homing) is controversial. Here, we examine the geomagnetic and olfactory imprinting hypotheses of natal homing with datasets that recorded variation in the migratory routes of sockeye ( Oncorhynchus nerka ) and pink ( Oncorhynchus gorbuscha ) salmon returning from the Pacific Ocean to the Fraser River, British Columbia. Drift of the magnetic field (i.e. geomagnetic imprinting) uniquely accounted for 23.2% and 44.0% of the variation in migration routes for so

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Cox, S. P., and S. G. Hinch. "Changes in size at maturity of Fraser River sockeye salmon (Oncorhynchus nerka) (19521993) and associations with temperature." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 5 (1997): 1159–65. http://dx.doi.org/10.1139/f97-009.

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Unlike other Canadian Pacific salmon (Oncorhynchus spp.), long-term declines in the size at maturity of Fraser River sockeye salmon (O. nerka) have not been reported in past studies. Using data specific for 10 Fraser River sockeye stocks, we demonstrate that size at maturity has generally declined over the past 42 yr for females in all stocks and for males from eight stocks. Independent of this temporal trend, we found that size at maturity of both sexes in all stocks was smaller in years when sea surface temperatures were relatively warm. Slower growth in warmer years may be caused directly b

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Johnston, N. T., E. A. MacIsaac, P. J. Tschaplinski, and K. J. Hall. "Effects of the abundance of spawning sockeye salmon (Oncorhynchus nerka) on nutrients and algal biomass in forested streams." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 3 (2004): 384–403. http://dx.doi.org/10.1139/f03-172.

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We used natural variation in sockeye salmon (Oncorhynchus nerka) spawner biomass among sites and years in three undisturbed, forested watersheds in interior British Columbia to test the hypotheses that salmon were a major source of particulate organic matter inputs to the streams and that carcass biomass determined stream-water nutrient concentrations and epilithic algal production. Sockeye carcasses were retained at the spawning sites, primarily (7580%) by large woody debris (LWD) or pools formed by LWD. The abundance and distribution of sockeye salmon determined stream-water nutrient concen

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Kent, M. L., D. J. Whitaker, and L. Margolis. "Transmission of Myxobolus arcticus Pugachev and Khokhlov, 1979, a myxosporean parasite of Pacific salmon, via a triactinomyxon from the aquatic oligochaete Stylodrilus heringianus (Lumbriculidae)." Canadian Journal of Zoology 71, no. 6 (1993): 1207–11. http://dx.doi.org/10.1139/z93-165.

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Laboratory transmission studies were conducted on Myxobolus arcticus, a myxosporean that infects the brain of Pacific salmon (Oncorhynchus spp.). Attempts at transmission from fish to fish with spores of M. arcticus from sockeye salmon (Oncorhynchus nerka), including experiments with spores aged for up to 9 months in sterilized mud, were unsuccessful. Transmission was achieved when hatchery-reared (in well water) sockeye salmon fry were exposed to the oligochaete Stylodrilus heringianus collected from a lake where M. arcticus infections are common in this fish. All experimental fish exhibited

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