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106 results for “Salmon River”
Figure 6 in giant, spike-toothed salmon, Oncorhynchus rastrosus and the "Proto-Tuolumne River" (early Pliocene) of Central California
Figure 6. Stratigraphy of the upper Mehrten Formation (Modesto Reservoir member) at Turlock Lake. Modified from Wagner, 1981. Important and published fossil localities are indicated by arrows. Badger locality (Wagner 1976); Tortoise locality (Biewer et al. 2016); Plant localities (Axelrod 1980). The two highlighted, deep channels are what we refer to as the "proto-Tuolumne River" deposits.
Age composition of subsistence harvests and total return of sockeye salmon from the Kvichak River
<p>This project aged samples of sockeye salmon harvested in the subsistence fishery in the Kvichak River watershed in 2018 and 2019. Age data were vital to previously funded AKSSF Project #44362 ("Stock Composition of Subsistence Harvests and Total Return of Sockeye Salmon from the Kvichak River"). It was determined in that project's first year that scale reabsorption necessitated using otoliths to age samples rather than scales. Ages from otolith reading combined with stock composition estimates from genetic mixed stock analysis were used to evaluate survival and productivity of brood years 2012–2015 at smolt and returning adult life stages. This project only produced the age reads from otoliths.</p> <p>Knowing the age composition of harvests permits reconstruction of the sockeye salmon return and examination of cohort returns and estimation of marine survival. This project dovetailed with AKSSF Project #44362 (Stock Composition of Subsistence Harvests and Total Return of Sockeye Salmon from the Kvichak River) by pairing age composition data with genetic stock composition data. Accurate age data are key to fisheries management. Harvests from in five communities along the Kvichak River were sampled (Kokhanok, Pedro Bay, Iliamna-Newhalen, Nondalton and Port Alsworth). Otoliths were collected during 2017, 2018, and 2019 to use to estimate the age.</p>
Stock composition of subsistence harvests and total return of sockeye salmon from the Kvichak River
<p>This project will reconstruct the total return of sockeye salmon to the Kvichak River to identify: 1) which of four stocks are most utilized by subsistence fisheries; 2) when these stocks migrate through the commercial fishery and escapement monitoring tower; and 3) if there are temporal trends in migration that may allow commercial fisheries managers to protect stocks important to subsistence fisheries. In addition, by building upon existing smolt stock composition data, this project will evaluate survival and productivity of brood years 2012–2015 at smolt and returning adult life stages.</p>
Pasagshak River sockeye Salmon (Oncorhynchus nerka) escapement monitoring data 2022–2024
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Climate data collected during sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2023
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Data from: Development of 54 novel SNP assays for sockeye and coho salmon and assessment of available SNPs to differentiate stocks within the Columbia River
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Data from: Chromosomal fusion and life history-associated genomic variation contribute to within-river local adaptation of Atlantic salmon
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Age composition of subsistence harvests and total return of sockeye salmon from the Kvichak River
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Sonar estimation of summer chum and pink salmon in the Anvik river, Alaska, 2022
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Stock composition of subsistence harvests and total return of sockeye salmon from the Kvichak River
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Size data for transgenic coho salmon from 5 rivers
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Climate data collected during sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2024
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Pacific salmon gill samples: fate tracking in river
GEO Series GSE22177. Osmerus mordax; Salmo salar; Coregonus clupeaformis; Oncorhynchus nerka; Oncorhynchus mykiss; Oncorhynchus tshawytscha. 104 samples. Type: Expression profiling by array.
Pacific salmon gill samples: fate tracking in river, sampled in ocean
GEO Series GSE22171. Oncorhynchus mykiss; Oncorhynchus nerka; Salmo salar; Oncorhynchus tshawytscha; Osmerus mordax; Coregonus clupeaformis. 35 samples. Type: Expression profiling by array.
Chum salmon escapement on Bonanza River in Norton Sound, Alaska
<p>Bonanza River flows 40 rkm south from the Kigluaik Mountains and drains into Safety Sound approximately 39 km northeast of Nome, Alaska. Chum, pink, and coho salmon are the predominant species that return to the Bonanza River. A fixed-picket weir was installed approximately 11 rkm above the Bonanza Bridge on the Nome-Council Highway (GPS coordinates 64°32.964ʹN, 164°35.812ʹW). The Bonanza River weir enumerated chum salmon for three seasons from 2018 to 2020. Chum salmon escapements were 7,903 in 2018; 8,824 in 2019; and 2,471 in 2020. In 2018 and 2019, high water delayed installation of the weir and therefore the beginning of the run may have been missed. Additionally, in 2019 high water forced weir operations to stop before the proposed end date, so it is likely the end of the chum salmon run was missed. In 2020, the weir went in according to schedule and counted the beginning of the run, but personnel issues, exacerbated by COVID-19 protocols, resulted in early termination of the project, and likely caused missed counting at the end of the run. High water that hindered counting on Bonanza River in 2018 and 2019 also hindered counting operations on other Subdistrict 1 rivers, and as a result aspects of Objectives 1 and 2 could not be completed for all project years. Age, sex, and length data were collected from chum salmon passing through the weir in all three years. Minimum sample size requirements to evaluate Objective 3 were met in 2018 and 2020, but not in 2019. In 2018, chum salmon were predominantly 4 years old and in 2020 chum salmon were predominantly 5 years old. This project indicated that using existing methods, such as weirs and aerial surveys, to estimate Bonanza River's contribution to chum salmon abundance in Subdistrict 1 provide a reasonable approximation of chum salmon escapement in the absence of an enumeration project on Bonanza River.</p>
Data from: Quantifying heritable variation in fitness-related traits of wild, farmed and hybrid Atlantic salmon families in a wild river environment
Farmed fish are typically genetically different from wild conspecifics. Escapees from fish farms may contribute one-way gene flow from farm to wild gene pools, which can depress population productivity, dilute local adaptations and disrupt coadapted gene complexes. Here, we reanalyse data from two experiments (McGinnity et al., 1997, 2003) where performance of Atlantic salmon (Salmo salar) progeny originating from experimental crosses between farm and wild parents (in three different cohorts) were measured in a natural stream under common garden conditions. Previous published analyses focussed on group-level differences but did not account for pedigree structure, as we do here using modern mixed-effect models. Offspring with one or two farm parents exhibited poorer survival in their first and second year of life compared with those with two wild parents and these group-level inferences were robust to excluding outlier families. Variation in performance among farm, hybrid and wild families was generally similar in magnitude. Farm offspring were generally larger at all life stages examined than wild offspring, but the differences were moderate (5–20%) and similar in magnitude in the wild versus hatchery environments. Quantitative genetic analyses conducted using a Bayesian framework revealed moderate heritability in juvenile fork length and mass and positive genetic correlations (>0.85) between these morphological traits. Our study confirms (using more rigorous statistical techniques) previous studies showing that offspring of wild fish invariably have higher fitness and contributes fresh insights into family-level variation in performance of farm, wild and hybrid Atlantic salmon families in the wild. It also adds to a small, but growing, number of studies that estimate key evolutionary parameters in wild salmonid populations. Such information is vital in modelling the impacts of introgression by escaped farm salmon.
Sonar Estimation of Summer Chum and Pink Salmon in the Anvik River, Alaska, 2021
<p>Dual-frequency identification sonar (DIDSON) was used to estimate adult summer chum salmon (<em>Oncorhynchus keta</em>) and pink salmon (<em>O. gorbuscha</em>) passage in the Anvik River from June 15 to July 26, 2021. Apportionment to species was determined from data collected from tower counts. A total of 18,819 (SE 273) summer chum and 0 pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex, and length information; however, high water prevented fishing for part of the season. In addition, because of low salmon passage, few fish were caught, and the sample fishery was discontinued early. Both sonar systems functioned well with minimal interruptions to operation. Range of ensonification was considered adequate for most fish that migrated upstream.</p>
Pasagshak River Sockeye Salmon (Oncorhynchus nerka) Escapement Monitoring 2019–2021
<p>Since 2011, sockeye salmon (<em>Oncorhynchus nerka)</em> escapement through the Pasagshak River into Lake Rose Teed on the Kodiak Island road system has been estimated with a weir. A continuation of funding from the Alaska Sustainable Salmon Fund (AKSSF, Project #52009) allowed the Alaska Department of Fish and Game (ADF&G), Division of Commercial Fisheries to operate a PVC floating weir near the mouth of Lake Rose Teed during the 2019 through 2021 seasons. This data set includes the number and species of fish counted through the weir, and the age, sex, and length (ASL) information gathered from sockeye salmon captured and sampled at the weir.</p>
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation
The river-resident Salmo salar ("småblank") has been isolated from other Atlantic salmon populations for 9,500 years in upper River Namsen, Norway. This is the only European Atlantic salmon population accomplishing its entire life cycle in a river. Hydropower development during the last six decades has introduced movement barriers and changed more than 50% of the river habitat to lentic conditions. Based on microsatellites and SNPs, genetic variation within småblank was only about 50% of that in the anadromous Atlantic salmon within the same river. The genetic differentiation (FST) between småblank and the anadromous population was 0.24. This is similar to the differentiation between anadromous Atlantic salmon in Europe and North America. Microsatellite analyses identified three genetic subpopulations within småblank, each with an effective population size Ne of a few hundred individuals. There was no evidence of reduced heterozygosity and allelic richness in contemporary samples (2005–2008) compared with historical samples (1955–56 and 1978–79). However, there was a reduction in genetic differentiation between sampling localities over time. SNP data supported the differentiation of småblank into subpopulations and revealed downstream asymmetric gene flow between subpopulations. In spite of this, genetic variation was not higher in the lower than in the upper areas. The meta-population structure of småblank probably maintains genetic variation better than one panmictic population would do, as long as gene flow among subpopulations is maintained. Småblank is a unique endemic island population of Atlantic salmon. It is in a precarious situation due to a variety of anthropogenic impacts on its restricted habitat area. Thus, maintaining population size and avoiding further habitat fragmentation are important.
Chum salmon escapement on Bonanza River in Norton Sound, Alaska
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.