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43 results for “Perca”
Sagittal otolith of Perca fluviatilis (total length=17 cm) from bottom (distal, concave, anti-sulcus side) and top (proximal, convex, with sulcus acusticus) view.
<p>This image shows the left sagittal otolith of <em>Perca fluviatilis </em>(total length=17 cm) from bottom (distal, concave, anti-sulcus side) and top (proximal, convex, with sulcus acusticus) view.</p>
Fig. 3 in Development Stability And Cytogenetic Homeostasis Of Perca Fluviatilis (Perciformes, Percidae) In The Rivers Of Rivne Region
Fig. 3. Comparison of Morphological and Cytogenetic Homeostasis Samples of P. fluviatilis in the Rivers of Rivne Region.
Fig. 1 in Development Stability And Cytogenetic Homeostasis Of Perca Fluviatilis (Perciformes, Percidae) In The Rivers Of Rivne Region
Fig. 1. Frequency of Nuclear Damages of P. fluviatilis Peripheral Blood Erythrocytes in the Rivers in Rivne Region: 1 — Styr River; 2 — Sluch River; 3 — Horyn River; 4 — Ustia River; 5 — Zamchysko River; 6 — Stubelka River; 7 — Ikva River.
Fig. 5 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 5. Representative electroretinograms from eyes of an uninfected yellow perch (Perca flavescens) and a perch infected with Diplostomum baeri. Arrows indicate the a-wave and the b-wave. The ERG waves were analyzed for amplitude and latency (time to peak). Note reduction in ERG b-wave amplitude and increase in b-wave latency recorded from the infected eye. Stimulus intensity units = μJ/cm2, time base = 0.27 s/div, amplitude = 15.5 mV/div.
Fig. 3 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 3. Paraffin sections of normal yellow perch (Perca flavescens) retinas stained with H&E. A. Structure of the retina, photoreceptor layer, pigment epithelium, choroid and the rete mirabile which supplies high levels of O2 to the retina. B. Normal structure of the optic nerve, optic disc and cribiform plate. Bar = 100 μm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 4 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 4. Paraffin sections of yellow perch (Perca flavescens) retinas and choroid infected with Diplostomum baeri, stained with H&E. A. Metacercariae in the choroid layer with thinning of the pigment epithelium. Retina in the unifected region on the far left of the image is in proximity to the rete mirabile. B. Pocket of metacercariae with melanin debris due to extensive damage to the choroid and pigment epithelium. C. Large pocket of metacercariae with melanin debris and loss of the pigment epithelium and photoreceptor layer (arrow). D. Uninfected region of the same eye shown in image C with normal retina, pigment epithelium and optic nerve. This was the only metacercaria seen in the vitreous humor of a perch on a histological section. E. Presence of the metacercaria increases the diffusion distance for O2 from the rete mirabile to the retina. Note damage to the pigment epithelium in locations of contact with the metacercaria. F. WrightGiemsa stain of the same region shown in image E. No inflammatory cells were detected. Bar = 100 μm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 1. ERG recording chamber. The eyecup sits on filter paper saturated with Ringer solution making contact with the reference electrode. The recording electrode is in the vitreous humor of the eyecup. The LED was placed 4 cm from the eyecup.
Fig. 6 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 6. Effect of Diplostomum baeri infection on the electroretinogram of yellow perch (Perca flavescens) as compared to recordings from normal fish. Infection had no effect on the a-wave but significantly reduced b-wave amplitude. Infection caused a strong trend toward an increase in latency (time to peak) of the a-wave and significantly increased the latency of the b-wave. (*p ≤ 0.05; # 0.05 <p ≤ 0.06; t-test, n = 10).
Fig. 7 in Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
Fig. 7. Flicker fusion frequency of the electroretinogram is reduced by Diplostomum baeri infection. A. Responses to stimulation at 10 Hz, 20 Hz and 40 Hz in an uninfected yellow perch (Perca flavescens). Flicker fusion is reached at 40 Hz. B. Responses to stimulation at 5 Hz and 10 Hz in an infected perch. Flicker fusion is reached at 10 Hz. Time base = 0.27 s/div, amplitude = 15.5 mV/div.
Fig. 2 in Subtle transcriptomic response of Eurasian perch (Perca fluviatilis) associated with Triaenophorus nodulosus plerocercoid infection
Fig. 2. MA and volcano plots comparing infected and uninfected spleen samples (a & b) and liver samples (c & d). In the MA plots (a & c), the log counts and the log fold change are represented on the x- and y-axis, respectively. For each volcano plot (b & d), log fold change is represented on the x-axis and the –log10 p-value on the y-axis, respectively. Positive fold change corresponds to upregulated genes in infected individuals.
Fig. 1. Differentially expressed genes between infected and uninfected P in Subtle transcriptomic response of Eurasian perch (Perca fluviatilis) associated with Triaenophorus nodulosus plerocercoid infection
Fig. 1. Differentially expressed genes between infected and uninfected P. fluviatilis in a) spleen and b) liver tissues. Filled-in and empty boxes on the top of each plot represent infected and uninfected individuals, respectively. N/A indicates unknown protein.
Fig. 2 in Taxonomic And Nomenclatural Status Of Perca Argentea Linnaeus, 1758, Perca Vaila Osbeck, 1770, And Perca Indica Gronow In Gray, 1854 (Osteichthyes, Terapontidae And Moronidae)
Fig. 2. The holotype (unique): NRM 4295-1 of Perca argentea Linnaeus. (Photograph by: Sven Kullander).
Fig. 3 in Taxonomic And Nomenclatural Status Of Perca Argentea Linnaeus, 1758, Perca Vaila Osbeck, 1770, And Perca Indica Gronow In Gray, 1854 (Osteichthyes, Terapontidae And Moronidae)
Fig. 3. The holotype (unique) NRM 4295-1 of Perca argentea Linnaeus. Detail of the head region showing the strong opercular spine. (Photograph by: Sven Kullander).
Metabolic rate data and code for: Intra-specific differences in metabolic rates shape carbon stable isotope trophic discrimination factors of muscle tissue in the common teleost Eurasian perch (Perca fluviatilis)
<p>Metabolic rate data and code for: Intra-specific differences in metabolic rates shape carbon stable isotope trophic discrimination factors of muscle tissue in the common teleost Eurasian perch (Perca fluviatilis)</p> <p> </p> <p>The raw data and R-code used to calculate SMR used in the analysis. </p>
Genomics of humic adaptation in Eurasian perch (Perca fluviatilis): SNP genotypes of 32 perch individuals, supplementary figures and tables
<p>Extreme <span>environments are inhospitable to the majority of species, but some organisms are able to survive in such hostile conditions due to evolutionary adaptations. For example, </span><span>m</span><span>odern bony fishes have colonized various aquatic environments, including perpetually dark,</span><span> hypoxic, hypersaline and toxic habitats</span><span>. </span><span>Eurasian perch (</span><em>Perca fluviatilis</em><span>) is among the few fish species of northern latitudes that is able to live in very acidic humic lakes. Such lakes represent almost "nocturnal" environments; they contain high levels of dissolved organic matter, which in addition to creating a challenging visual environment, also affects a large number of other habitat parameters and biotic interactions. To reveal the genomic targets of humic-associated selection, we performed whole-genome sequencing of perch originating from 16 humic and 16 clear-water lakes in northern Europe. We identified over 800,000 SNPs, of which >10,000 were identified as potential candidates under selection (associated with >3,000 genes) using multiple outlier approaches. Our findings suggest that adaptation to the humic environment may involve hundreds of regions scattered across the genome. Putative signals of adaptation were detected in genes and gene families with diverse functions, including organism development and ion transportation. The observed excess of variants under selection in regulatory regions highlights the importance of adaptive evolution via regulatory elements, rather than via protein sequence modification. Our study demonstrates the power of whole-genome analysis to illuminate multifaceted nature of humic adaptation and provides the foundation for further investigation of causal mutations underlying phenotypic traits of ecological and evolutionary importance.</span></p>
Fig. 1. Terapon theraps, 74 in Taxonomic And Nomenclatural Status Of Perca Argentea Linnaeus, 1758, Perca Vaila Osbeck, 1770, And Perca Indica Gronow In Gray, 1854 (Osteichthyes, Terapontidae And Moronidae)
Fig. 1. Terapon theraps, 74 mm SL, Bahrain. (Photograph by: John E. Randall).
Data from: Intra-population variation in reproductive timing co-varies with thermal plasticity of offspring performance in perch (Perca fluviatilis)
Open the record for dataset details and reuse information.
Genomics of humic adaptation in Eurasian perch (Perca fluviatilis): SNP genotypes of 32 perch individuals, supplementary figures and tables
Open the record for dataset details and reuse information.
North Temperate Lakes site, station Allequash Lake, study of animal abundance of Perca flavescens in units of numberPerEffort on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from North Temperate Lakes (NTL) contains animal abundance of Perca flavescens measurements in numberPerEffort units and were aggregated to a yearly timescale.
North Temperate Lakes site, station Big Muskellunge Lake, study of animal abundance of Perca flavescens in units of numberPerEffort on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from North Temperate Lakes (NTL) contains animal abundance of Perca flavescens measurements in numberPerEffort units and were aggregated to a yearly timescale.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.