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730 results for “Trout”
Trout of Hokkaido data (Rainbow, Brown, Brook, and Sockeye)
<p>This is a data set of 928 presents points (and 3 NA locations) for invasive trout species across Hokkaido for the masters thesis "<strong>Perception of fishermen towards invasive salmonids in Hokkaido and the contribution of citizen science to their long-term monitoring</strong>". It is comprised of Scientific studies, gray literature, YouTube videos, social media sites, blogs, word of mouth, email, and iNaturalist data. Please feel free to use this data for research on these species.</p> <p>Columns are broken up into 10 parts.</p> <p>-------------------------------Columns are--------------------------------</p> <p><strong>Hits</strong>: Hits on the map one per site.</p> <p><strong>Paper/source</strong>: where the study or citizen data came from. (Please feel free to check out the blogs as they update with new data often) The key as follows</p> <p> FLK = Fliker / IG = Instagram / TW = Twitter / WEB = website / YTV = youtube</p> <p><strong>Contributor</strong>: then Name of the citizen sciences contributor. Blogs, Twitter names, Instagram names, Youtube channel names, etc... </p> <p><strong>Xcoord</strong>: the X coordinate</p> <p><strong>Ycoord</strong>: the y coordinate</p> <p><strong>Specie</strong>: one of 4 species denoted as its scientific name</p> <p><strong>Start Date</strong>: When the study or post started collecting data</p> <p><strong>End Date</strong>: When the study or post ended collecting data</p> <p><strong>Science / Citizen</strong>: denotes where the data came from.</p> <p> Broken up into a few groups,</p> <p> <strong>Science</strong>: from scientific source and grey litterture</p> <p> *Science (old) : data was used as a base line for the study</p> <p> <strong>Active</strong>: Citizen data that has been reported during the study period of the study</p> <p> Please go the the iNaturalist link to get that data. </p> <p> <strong> Passive</strong>: Citizen data that came from lots of different places.</p> <p> *Passive(site) : places that are mapped as fishing spots per speceis by fishing shops and tours</p> <p><strong>Number per hit</strong>: reported or counted species per hit point on the map (accuracy is not 100% ensured) </p> <p>Notes-----------------------------------------------------------------------------------------------</p> <p>River points should be close to actual points caught but lake points should not be used for precise data as much of it was not precisely listed and so guess work on location took place.</p> <p> </p>
Dataset for "Diets supplemented with Saccharina latissima influence the expression of genes related to lipid metabolism and oxidative stress modulating rainbow trout (Oncorhynchus mykiss) fillet composition" (doi.org/10.1016/j.fct.2020.111332)
<p>Dataset corresponding to the following article:</p> <p>Ferreira, M., Larsen, B.K., Granby, K., Cunha, S.C., Monteiro, C., Fernandes, J.O., Nunes, M.L., Marques, A., Dias, J., Cunha, I., Castro, L.F.C., Valente, L.M.P., 2020. Diets supplemented with <em>Saccharina latissima </em>influence the expression of genes related to lipid metabolism and oxidative stress modulating rainbow trout (<em>Oncorhynchus mykiss</em>) fillet composition. Food Chem. Toxicol. 140, 111332. <a href="https://doi.org/10.1016/j.fct.2020.111332">https://doi.org/10.1016/j.fct.2020.111332</a></p>
Growth genes are implicated in the evolutionary divergence of sympatric piscivorous and insectivorous rainbow trout (Oncorhynchus mykiss)
<p>Identifying ecologically significant phenotypic traits and the genomic mechanisms that underly them are crucial steps in understanding the traits associated with population divergence. We used genome-wide data to identify genomic regions associated with a key trait that distinguishes two ecotypes of rainbow trout (Oncorhynchus mykiss) – insectivores and piscivores – that coexist in Kootenay Lake, southeastern British Columbia, for the non-breeding portion of the year. "Gerrards" are large-bodied (breeding maturity at >60cm) piscivores that spawn 50km north of Kootenay Lake in the Lardeau River, in contrast to the insectivorous populations that are on average smaller in body size, mainly forage on aquatic insects, and spawn in tributaries immediately surrounding Kootenay Lake. We used pool-seq data covering 60 percent of the genome to assess the level of genomic divergence between ecotypes, test for genotype-phenotype associations, and identify loci that may play functional or selective roles in their divergence. Analysis of nearly seven million SNPs provided a genome-wide mean FST estimate of 0.18, indicating a high level of reproductive isolation between populations. The window-based FST analysis did not reveal "islands" of genomic differentiation; however, the window with highest FST estimate did include a gene associated with insulin secretion. Although we explored the use of the "Local score" approach to identify genomic outlier regions, this method was ultimately not used because simulations revealed a high false discovery rate (20 percent). Gene Ontology (GO) analysis identified several growth processes as enriched in genes occurring in the 200 most divergent genomic windows, indicating the importance of genetically-based growth and growth-related metabolic functions in the divergence of these ecotypes. In spite of their sympatric coexistence, a high degree of genomic differentiation separates the populations of piscivores and insectivores, indicating little to no contemporary genetic exchange between ecotypes. Our results further indicate that the large body piscivorous 27 phenotype is likely not due to one or a few loci of large effect, rather it may be controlled by several loci of small effect, thus highlighting the power of whole-genome low-coverage sequencing in phenotypic association studies.</p>
Plasma NMR metabolomic of rainbow trout fed diets with different levels of marine and plant ingredients.
<p>The NMR and biochemical datasets used in the manuscript draft entiteld "Intestinal microbiota in rainbow trout, <em>Oncorhynchus mykiss</em>, fed diets with different levels of marine and plant ingredients: A correlative approach with some plasma metabolites."</p> <p>François-Joël Gatesoupe1*, Benoît Fauconneau1, Catherine Deborde2,3**, Blandine Madji Hounoum1,2, Daniel Jacob2,3,Annick Moing2,3, Geneviève Corraze1, Françoise Médale1. 1 UMR 1419 NuMeA, INRA, Université de Pau et des Pays de l’Adour, Saint Pée sur Nivelle, France 2 Bordeaux Metabolome Facility, CGFB, MetaboHUB, Centre INRA Nouvelle -Aquitaine-Bordeaux, Villenave d'Ornon, France 3 UMR1332 Biologie du Fruit et Pathologie, Centre INRA Nouvelle -Aquitaine-Bordeaux, Villenave d'Ornon, France<br> *Corresponding author Joel.Gatesoupe@partenaire-exterieur.ifremer.fr</p> <p>**NMR dataset Corresponding author catherine.deborde@inra.fr</p> <p> </p> <p> </p> <p> </p>
Data for: Population niche width is driven by within-individual niche expansion and individual specialization in introduced brook trout in mountain lakes
<p><span>The width of a population's resource use niche is determined by individual diet breadth ("within-individual component") and the degree of niche partitioning between individuals ("between-individual component"). The balance between these two factors affects ecological stability and evolutionary trajectories, and may shift as ecological opportunity permits broader population niches. Lakes in California's Sierra Nevada Mountains vary in resource diversity for introduced brook trout (<em>Salvelinus fontinalis</em>) due to elevation, lake morphometry, and watershed features. We compared the relative contributions of within- and between-individual niche components to two measures of the dietary niches of thirteen populations of brook trout: prey taxonomic composition and prey size distribution. For both taxonomic and size diversity of fish diets, population niche width was positively related to both the within- and between-individual components. For taxonomic diversity, the two components increased in parallel, while for size diversity, the between-individual component became more important relative to the within-individual component in populations with the greatest niche widths. Our results support the Niche Variation Hypothesis that populations with broader niches are more heterogeneous among individuals and show that individual niche width and individual specialization can operate in parallel to expand the population niche.</span></p>
Video and accelerometer tree sway data for an oak tree in Trout Lake, Wisconsin
<p>This repository includes video, accelerometer, and sway frequency data for a red oak tree (Quercus rubra) in the Trout Lake Watershed in northern Wisconsin. Video and accelerometer data were recorded on 15 August 2019. Sway frequency data was extracted from both video and accelerometer data using the methods described in Ammatelli et al. (In review).</p> <p>All times are in Central Daylight Time.</p> <p><strong>Video Data </strong></p> <p>The five, 60 s videos were recorded using a video camera fastened with straps to the base of an adjacent tree.</p> <p>Video camera: Bushnell TrophyCam, 30 fps, 1080p resolution, 45° FOV</p> <p>File naming convention: trout-X.MP4 where X (a,b,c,d,e) is the video ID</p> <p>Date and time</p> <ul> <li>trout-a.MP4 (2019-8-15 17:07:18)</li> <li>trout-b.MP4 (2019-8-15 17:30:01)</li> <li>trout-c.MP4 (2019-8-15 17:32:34)</li> <li>trout-d.MP4 (2019-8-15 18:00:01)</li> <li>trout-e.MP4 (2019-8-15 18:09:06)</li> </ul> <p><strong>Accelerometer Data</strong></p> <p>Accelerometer data for the same tree was recorded using a 3-axis accelerometer. The accelerometer was positioned beneath the main branching of the target tree at ~8 m (total tree height ~22 m). </p> <p>Accelerometer: Gulf Coast Data Concepts 2g MEL-X2,16 Hz continuous sampling</p> <p>Filename: trout_accelerometer.csv</p> <p>Variables:</p> <ol> <li>datetime index (in CDT)</li> <li>acc - single‐axis acceleration filtered through a low‐pass filter from 0.01 to 2 Hz</li> </ol> <p><strong>Sway Frequency Data</strong></p> <p>For each video, the tree's sway frequency was extracted from the video and two lengths of accelerometer data: a segment with the same start time and duration as the video and a 30-minute segment.</p> <p>Filename: trout_sway.csv</p> <p>Variables:</p> <ol> <li>name - name of video sample</li> <li>datetime - start time of video sample</li> <li>vvs_avg_hz - frequency (Hz) of tree extracted using VVS method with average spectrum aggregation</li> <li>vvs_hist_hz - frequency (Hz) of tree extracted using VVS method with peak frequency histogram aggregation</li> <li>mbt_avg_hz - frequency (Hz) of tree extracted using MBT method with average spectrum aggregation</li> <li>acc_60sec_hz - frequency (Hz) of tree extracted from an accelerometer segment with the same start time and duration as the video</li> <li>acc_30min_hz - frequency (Hz) of tree extracted from a 30-minute accelerometer segment centered on the video start time</li> </ol>
Figure 1 in Nematodes infest winter-active chironomids in Minnesota trout streams
Figure 1. Female Orthocladiinae longevity and survival probability with and without nematode parasitism in Ike's Creek. Longevity defined as days lived post collection. (a) Box and whisker boundaries signify the maximum, 75th percentile, median, 25th percentile, and minimum longevity values. Black diamonds (◆) indicate mean longevity and dots (•) indicate outliers. Wilcoxon tests with Benjamini & Hochberg multiple test corrections were used to determine statistical differences between parasitized and non-parasitized individuals. (b) Kaplan-Meier survivorship curves indicate the proportion of individuals alive on a given day. Log-Rank tests were used to determine statistical differences between parasitized and non-parasitized individuals.
Data from: Personality determines population-level effects of microplastics consumption in a modelled population of stream-dwelling rainbow trout (Oncorhynchus mykiss)
<p>Microplastics in freshwater habitats are consumed by fish, including stream-dwelling salmonids, which can alter food consumption or negatively affect swimming and foraging behaviour. As population-level effects are largely unknown, a simulated population of stream-dwelling rainbow trout (<em>Oncorhynchus mykiss</em>) was created using the agent-based model 'inSTREAM 7' to model population-level effects (biomass) of behavioural changes caused by microplastics consumption. Individual fish were assigned all possible combinations of two personality traits (dominance, boldness/shyness), and consumed microplastics while foraging, while their abundance, body size, and microplastics consumption were tracked for three different life stages (fry, juvenile, adult) for a 10-year simulation period. Three additive scenarios were explored: a low-impact scenario with decreased food consumption, a medium-impact scenario with added lower swimming speed, and a high-impact scenario with added reductions in prey capture efficiency. Each was tested with microplastics concentrations of 0%, 1% (i.e., current levels), and 3% (i.e., future levels) of drift food. Overall, microplastics consumption did not strongly affect trout population abundance. Dominant adult trout consumed disproportionally more microplastics than all other fish, especially with higher microplastics concentrations. Different personality types were affected differently in the three scenarios: dominant and bold adults were smaller when food consumption was reduced, shy and subordinate adults were smaller when swimming speed was lowered, and all dominant adults, regardless of boldness, were smaller when foraging efficiency was impeded, with dominant and bold fry also less abundant in this scenario. However, effects on fish body size were only found with microplastic concentrations of 3%, indicating these outcomes can be prevented, as current levels of microplastics pollution are unlikely to affect salmonid body size. Nevertheless, microplastics ingestion represents an additional stressor that may potentially interact with a myriad of anthropogenic impacts that already affect wild salmonid populations.</p>
Data from: Distinct patterns of inheritance shape life-history traits in steelhead trout
<p>Life-history variation is the raw material of adaptation, and understanding its genetic and environmental underpinning is key to designing effective conservation strategies. We used large-scale genetic pedigree reconstruction of anadromous steelhead trout (<em>Oncorhynchus</em> <em>mykiss</em>) from the Russian River, California, USA to elucidate sex-specific patterns of life-history traits and their heritability. SNP data from adults returning from sea over a 14-year period were used to identify 13,474 parent-offspring trios. These pedigrees were used to determine age structure, size distributions, and family sizes for these fish, as well as to estimate the heritability of two key life-history traits, spawn date and age at maturity (first reproduction). Spawn date was highly heritable (h<sup>2</sup> = 0.73) and had a cross-sex genetic correlation near unity. We provide the first estimate of heritability for age at maturity in ocean-going fish from this species and found it to be high heritable (h<sup>2</sup> from 0.29–0.62, depending upon sex and calculation), with a much lower genetic correlation across sexes. We also evaluated genotypes at a migration-associated inversion polymorphism and found sex-specific correlations with age at maturity. The significant heritability of these two key reproductive traits in these imperiled fish, and their patterns of inheritance in the two sexes, is consistent with predictions of both natural and sexually antagonistic selection (sexes experience opposing selection pressures). This emphasizes the importance of anthropogenic factors, including hatchery practices and ecosystem modifications, in shaping the fitness of this species, thus providing important guidance for management and conservation efforts.</p>
Environmental and food web determinants of Lake Trout mercury concentrations in Ontario Lakes
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Data from: Sex-specific effects of inbreeding in juvenile brown trout
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Data from: Distinct patterns of inheritance shape life-history traits in steelhead trout
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Data from: Alternative forms of brook trout nest site selection alter modeled offspring thermal experience and emergence phenology in groundwater-influenced streambeds
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Growth genes are implicated in the evolutionary divergence of sympatric piscivorous and insectivorous rainbow trout (Oncorhynchus mykiss)
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Differences in gene expression between high and low tolerance rainbow trout (Oncorhynchus mykiss) to acute thermal stress
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Phenotypes and genotypes of brown trout used for breeding experiments in 2014
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Inbreeding avoidance and cost in a small, isolated trout population
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Riverscape genetics of non-native Brook Trout to inform native Cutthroat Trout conservation
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Data from: Sex-specific life history affected by stocking in juvenile brown trout
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Data for: Population niche width is driven by within-individual niche expansion and individual specialization in introduced brook trout in mountain lakes
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