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80 results for “Oreochromis”
Figure 6 in Life history traits of the exploited Nile Tilapia (Oreochromis niloticus - Cichlidae) in a subtropical reservoir (Lao PDR)
Figure 6. – At left, percentage of mature Oreochromis niloticus females by 20 mm standard length intervals, a fitted to logistic function from the Nam Theun 2 Reservoir in Lao PDR in 2016; at right, percentage of mature Oreochromis niloticus females by age (year), fitted to a logistic function from the Nam Theun 2 Reservoir in Lao PDR in 2016.
Figure 5 in Comparative anatomical studies on the cranial nerves of the fully formed embryos of the Nile tilapia Oreochromis niloticus (Ostiechthyes-Cichlidae). I. Nervus glossopharyngeus
Figure 5. Photomicrograph of part of a transverse section of Oreochromis niloticus passing through the postotic region showing the petrosal ganglion and the origin of the rami pretrematic and posttrematic of nervus glossopharyngeus from the ganglion. The sympathetic nerve and sympathetic branch are also shown. X60.
Figure 2 in Comparative anatomical studies on the cranial nerves of the fully formed embryos of the Nile tilapia Oreochromis niloticus (Ostiechthyes-Cichlidae). I. Nervus glossopharyngeus
Figure 2. Photomicrograph of part of a transverse section of Oreochromis niloticus passing through the postorbital region showing the origin of the root of nervus glossopharyngeus. X40.
Figure 4 in Comparative anatomical studies on the cranial nerves of the fully formed embryos of the Nile tilapia Oreochromis niloticus (Ostiechthyes-Cichlidae). I. Nervus glossopharyngeus
Figure 4. Photomicrograph of part of a transverse section of Oreochromis niloticus through the postotic region showing the position of the glossopharyngeal nerve extracranially. X60. AU.C. Auditory capsule.EXO. Exooccipital bone.F.GP. Glossopharyngeal foramen. IJV.internal jugular vein.G.EB.X 1 The epibranchial ganglion of the 1st branchial vagal trunk.G.EB.X The epibranchial ganglion 2 of the 2nd branchial vagal trunk. MO. Medulla Oblongata. N.CSY. Cranial sympathetic nerve. N.IX Nervus glossopharyngeus RO.IX Glossopharyngeal root.
Data from: Ancient and recent hybridization in the Oreochromis cichlid fishes
<p>Cichlid fishes of the genus <em>Oreochromis</em> (tilapia) are among the most important fish for inland capture fisheries and global aquaculture. Deliberate introductions of non-native species for fisheries improvement and accidental escapees from farms have resulted in admixture with indigenous species. Such hybridization may be detrimental to native biodiversity, potentially leading to genomic homogenization of populations and the loss of important genetic material associated with local adaptation. By contrast, introgression may fuel diversification when combined with ecological opportunity, by supplying novel genetic combinations. To date, the role of introgression in the evolutionary history of tilapia has not been explored. Here we studied both ancient and recent hybridization in tilapia, using whole genome resequencing of 575 individuals from 23 species. We focused on Tanzania, a natural hotspot of tilapia diversity, and a country where hybridization between exotic and native species in the natural environment has been previously reported. We reconstruct the first genome-scale phylogeny of the genus and reveal prevalent ancient gene flow across the Oreochromis phylogeny. This has likely resulted in hybrid speciation of one species, <em>O. chungruruensis</em>. We identify multiple cases of recent hybridization between native and introduced species in the wild, linked to the use of non-native species in both capture fisheries improvement and aquaculture. This has potential implications for both conservation of wild populations and the development of the global tilapia aquaculture industry.</p>
Figure 2 in Standard weight equations of two sub-/tropic nonnative freshwater fish, Clarias gariepinus and Oreochromis niloticus, in the Sakarya River Basin (NW Turkey)
Figure 2. Distribution of the residuals used to investigate potential length-bias in the standard weight (W ) equation for C. gariepinus (a) and O. niloticus (b) from the s Sakarya River Basin (residuals = standardized residuals of the regression; fitted values = values obtained by the model fit).
Figure 1 in Standard weight equations of two sub-/tropic nonnative freshwater fish, Clarias gariepinus and Oreochromis niloticus, in the Sakarya River Basin (NW Turkey)
Figure 1. Area of collection of the data (black rectangle = Sakarya River Basin; yellow dots = locations of the field stations within the Sakarya River Basin) (courtesy of Google Earth).
Figure 6 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 6. TEM images of brain tissue sample of fish (O. niloticus) exposed to 1 (A and B), 5 (C and D), and 25 (E and F) mg/L of CuO NPs for 14 days of uptake and 14 days of depuration periods, respectively.
Figure 10 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 10. The mean ATPase activity and associated standard errors in the brain of O. niloticus exposed to Al2 O 3 (a), CuO (b), and TiO2 NPs for 14 days (n = 6). See Figure 8 for detail.
Figure 5 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 5. TEM images of brain tissue sample of fish (O. niloticus) exposed to 1 (A and B), 5 (C and D), and 25 (E and F) mg/L of Al2 O 3 NPs for 14 days of uptake and 14 days of depuration periods, respectively.
Figure 9 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 9. The mean Ca-ATPase activity and associated standard errors in the muscle of O. niloticus. See Figure 8 for details.
Figure 3 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 3. TEM images of muscle tissue sample of fish (O. niloticus) exposed to 1 (A and B), 5 (C and D), and 25 (E and F) mg/L of CuO NPs for 14 days of uptake and 14 days of depuration periods, respectively.
Datasets - Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei
<p>Dataset with experimental results </p>
Fig. 96. Oreochromis mossambicus, 150 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 96. Oreochromis mossambicus, 150 mm SL male (top), 100 mm SL female (bottom); Pandan Reservoir.
Genetic differentiation following recent domestication events: A study of farmed Nile tilapia (Oreochromis niloticus) populations
<p>SNP array data from our research article. It contains the SNP markers in common across the different Nile tilapia (Oreochromis niloticus) populations assessed in the study</p>
Data from: Ancient and recent hybridization in the Oreochromis cichlid fishes
Open the record for dataset details and reuse information.
Multi-omics analysis reveals the glycolipid metabolism response mechanism in the liver of Genetically Improved Farmed Tilapia (GIFT, Oreochromis niloticus) under hypoxia stress
<p><span><b>Background: </b>Dissolved oxygen (DO) in the water is a vital abiotic factor in aquatic animal farming. A hypoxic environment affects the growth, metabolism, and immune system of fish. Glycolipid metabolism is a vital energy pathway under acute hypoxic stress, and it plays a significant role in the adaptation of fish to stressful environments. In this study, we used multi-omics integrative analyses to explore the mechanisms of hypoxia adaptation in Genetically Improved Farmed Tilapia (GIFT, <i>Oreochromis niloticus</i>). </span></p> <p><span><b>Results:</b><b> </b>The 96 h median lethal hypoxia (96h-LH50) for GIFT was determined by linear interpolation. We established control (DO: 5 mg/L) groups (CG) and hypoxic stress (96h-LH50) groups (HG) and extracted liver tissues for high-throughput transcriptome and metabolome sequencing. A total of 581 differentially expressed (DE) genes and 1250 DE metabolites were detected between CG and HG, and were annotated using tools at the KEGG database. We verified the transcript levels of eight DE genes by quantitative real-time PCR.</span></p> <p><span><b>Conclusions: </b>Analyses of essential glycolipid metabolism pathways of GIFT under hypoxia stress showed that, after 96 h of hypoxia stress, lipid metabolism became the primary metabolic pathway in GIFT. Our findings reveal the changes in metabolites and gene expression that occur under hypoxia stress, and shed light on the regulatory pathways that function under such conditions. Ultimately, this information will be useful to devise strategies to decrease the damage caused by hypoxia stress in farmed fish.</span></p>
Dataset to study the population genomics of introduced Nile tilapia (Oreochromis niloticus (Linnaeus, 1758)) in the Democratic Republic of the Congo: repeated introductions since colonial times with multiple sources
<p>During colonial times, Nile tilapia <em>Oreochromis niloticus</em> (Linnaeus, 1758) was introduced in non-native parts of the Congo Basin (Democratic Republic of the Congo, DRC) for the first time. Currently, it is the most farmed cichlid in the DRC, and is present throughout the Congo Basin. Although Nile tilapia has been reported as an invasive species, documentation of historical introductions into this basin and its consequences are scant. Here, we study the genetic consequences of these introductions by genotyping 213 Nile tilapia from native and introduced regions, focussing on the Congo Basin. Additionally, 48 specimens from 16 other tilapia species were included to test for hybridisation. Using RAD sequencing (27 611 SNPs), we discovered genetic admixture with other tilapia species in several morphologically identified Nile tilapia from the Congo Basin, stressing their ability to interbreed and the potential threat they cause to the genetic integrity of native tilapias. Populations from the Upper Congo and those from the Middle-Lower Congo are strongly differentiated. The former show genetic similarity with Nile tilapia from the White Nile, while specimens from the Benue Basin and Lake Kariba are similar to Nile tilapia from the Middle-Lower Congo, suggesting independent introductions using different sources. We conclude that the presence of Nile tilapia in the Congo Basin results from independent introductions, reflecting the dynamic aquaculture history, and that their introduction probably leads to genetic interactions with native tilapias, which could lower their fitness. We therefore urge to avoid introductions of Nile tilapia in non-native regions and to use native tilapias in future aquaculture efforts.</p>
Figure 1 in Effect of Moringa olifera leaves on growth and gut microbiota of Nile tilapia (Oreochromis niloticus)
Figure 1. Growth performance parameters.
Fig 2 in Nutritional characteristics and costs of diets based on fish, spirulina, maggot and earthworm meals at the larval phase of rearing tilapia Oreochromis niloticus
Fig 2: Maggot
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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)
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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.