keyword
https://read.qxmd.com/read/38393192/testing-the-aquatic-toxicity-of-2d-few-layer-graphene-inks-using-rainbow-trout-oncorhynchus-mykiss-in-vivo-and-in-vitro-approaches-to-support-an-ssbd-assessment
#21
JOURNAL ARTICLE
Gregorio Molés, Mona Connolly, Ana Valdehita, Gerardo Pulido-Reyes, Maria L Fernandez-Cruz, Emmanuel Flahaut, José M Navas
Graphene-based conductive inks offer attractive possibilities in many printing technology applications. Often, these inks contain a mixture of compounds, such as solvents and stabilizers. For the safe(r) and sustainable use of such materials in products, potentially hazardous components must be identified and considered in the design stage. In this study, the hazards of few-layer graphene (FLG)-based ink formulations were tested in fish using in vitro (RTL-W1 cell line) and in vivo aquatic ecotoxicity tests (OECD TG 203)...
January 23, 2024: Toxics
https://read.qxmd.com/read/38392325/11-deoxycorticosterone-doc-s-action-on-the-gill-osmoregulation-of-juvenile-rainbow-trout-oncorhynchus-mykiss
#22
JOURNAL ARTICLE
Rodrigo Zuloaga, Luciano Ahumada-Langer, Jorge Eduardo Aedo, Alfredo Molina, Juan Antonio Valdés
In aquaculture, stress can negatively affect fish growth. For years, the cortisol hormone has been thought to play both glucocorticoid and mineralocorticoid functions. Nevertheless, recent research has suggested that 11-deoxycorticosterone (DOC) released during stress could contribute to cortisol actions, though this process is still misunderstood. Here, we evaluated the DOC effects on physiological and early transcriptional responses by RNA-seq. Juvenile rainbow trout were treated with DOC and/or glucocorticoids (mifepristone) or mineralocorticoid (eplerenone) receptor antagonists...
February 9, 2024: Biology
https://read.qxmd.com/read/38390692/kinematics-and-muscle-activity-of-pectoral-fins-in-rainbow-trout-oncorhynchus-mykiss-station-holding-in-turbulent-flow
#23
JOURNAL ARTICLE
Brendan J Gibbs, Otar Akanyeti, James C Liao
Pectoral fins play a crucial role in fish locomotion. Despite fishes living in complex fluid environments that exist in rivers and tidal flows, the role of the pectoral fins in navigating turbulent flows is not well understood. This study investigated the kinematics and muscle activity of pectoral fins in rainbow trout as they held station in the unsteady flows behind a D-section cylinder. We observed two distinct pectoral fin behaviors, one during braking and the other during Kármán gaiting. These behaviors were correlated to whole-body movements in response to the hydrodynamic conditions of specific regions in the cylinder wake...
February 23, 2024: Journal of Experimental Biology
https://read.qxmd.com/read/38389056/genome-wide-detection-of-positive-and-balancing-signatures-of-selection-shared-by-four-domesticated-rainbow-trout-populations-oncorhynchus-mykiss
#24
JOURNAL ARTICLE
Katy Paul, Gwendal Restoux, Florence Phocas
BACKGROUND: Evolutionary processes leave footprints along the genome over time. Highly homozygous regions may correspond to positive selection of favorable alleles, while maintenance of heterozygous regions may be due to balancing selection phenomena. We analyzed data from 176 fish from four disconnected domestic rainbow trout populations that were genotyped using a high-density Axiom Trout genotyping 665K single nucleotide polymorphism array, including 20 from the US and 156 from three French lines...
February 22, 2024: Genetics, Selection, Evolution: GSE
https://read.qxmd.com/read/38379546/high-replacement-of-soybean-meal-by-different-types-of-rapeseed-meal-is-detrimental-to-rainbow-trout-oncorhynchus-mykiss-growth-antioxidant-capacity-non-specific-immunity-and-aeromonas-hydrophila-tolerance
#25
JOURNAL ARTICLE
Wen Jiang, Hengzhi Wang, Lu Zhang, Haifeng Mi, Junming Deng
A 12-week feeding trial was conducted to evaluate the effects of replacing soybean meal with different types of rapeseed meal (RSM; Chinese 95-type (oil press model) rapeseed meal [C95RM], Chinese 200-type rapeseed meal [C200RM], cold pressed rapeseed cake [CPRC], Indian rapeseed meal [IRM] and Canadian rapeseed meal [CRM]) on growth, antioxidant capacity, non-specific immunity and Aeromonas hydrophila infection tolerance in 990 fingering (average weight 12.77 ± 0.01 g) rainbow trout ( Oncorhynchus mykiss )...
2024: Frontiers in Nutrition
https://read.qxmd.com/read/38379298/analyzing-the-impact-of-synthetic-and-natural-steroids-a-study-of-cytochrome-p450-metabolism-morphological-alterations-through-metabolomics-and-histopathological-examination
#26
JOURNAL ARTICLE
Esat Mahmut Kocaman, Onur Şenol, Serkan Yıldırım, Muhammed Atamanalp, Sinan Özcan, İsmail Bolat, Arzu Ucar, Metin Kiliçlioğlu, Veysel Parlak, Mehmet Takkac, Gonca Alak
This study focuses on the comparative metabolic profiling and effects of two steroid types: natural and synthetic, specifically 17α-methyl testosterone (17α-MT) at varying concentrations (1.5, 2, and 3 mg/kg) in rainbow trout ( Oncorhynchus mykiss ). Over a 75-day feeding trial, growth metrics such as feed efficiency, daily specific growth, live weight gain, total weight gain, and survival rate were systematically monitored every 15 days. At the end of the feeding trial, histopathology, immunohistochemistry, and metabolome analyses were performed in the high-concentration groups (3 mg/kg natural and 3 mg/kg synthetic), in which the lowest survival rate was determined...
February 20, 2024: Toxicology Mechanisms and Methods
https://read.qxmd.com/read/38379230/estimation-of-genetic-diversity-of-the-exotic-indian-trout-populations-by-using-microsatellite-markers
#27
JOURNAL ARTICLE
Walter Devaa, Vimal Panneerselvam, Ramesh Uthandakalaipandian
Rainbow trout ( Oncorhynchus mykiss ) and brown trout ( Salmo trutta fario ) are popular salmonid species that are reared for sport and recreational activities worldwide. In India, they were introduced and successfully established in the late 19th and early 20th centuries by the European settlers. However, until now, no studies have analysed the genetic integrity of wild trout populations in India. Therefore, this study aimed to analyse the genetic integrity of the wild rainbow trout populations from south India, one wild rainbow trout population from north India, and one wild brown trout population from north India...
2024: Journal of Genetics
https://read.qxmd.com/read/38374619/development-of-halochromic-electrospun-labels-for-non-invasive-shelf-life-assessment-of-rainbow-trout-oncorhynchus-mykiss-incorporation-of-barberry-anthocyanin-extract-in-protein-based-smart-packaging
#28
JOURNAL ARTICLE
Faezeh Sadat Aliakbari, Mahboobeh Kashiri, Behrouz Ghorani, Morteza Khomeiri, Seid Mahdi Jafari
Using barberry ( Berberis vulgaris L.) as a natural dye in combination with electrospinning technology represents a promising approach for the development of intelligent packaging systems. In this study, the influence of different concentrations of zein (16, 18, and 20%) and barberry anthocyanin-rich powder (BARP) (16, 18, and 20%) on the surface tension and rheological properties of the solution were evaluated. The most favorable nanofibers (NFs) were obtained from a solution containing 18% (w/w) zein under constant voltage...
February 19, 2024: Food Science and Technology International
https://read.qxmd.com/read/38374523/the-effect-of-swimming-activity-and-feed-restriction-of-rainbow-trout-oncorhynchus-mykiss-on-water-quality-and-fish-plant-growth-performance-in-aquaponics
#29
JOURNAL ARTICLE
Gökhan Tunçelli, Devrim Memiş
In this study, we investigated the effects of swimming activity and feed restriction on juvenile rainbow trout (Oncorhynchus mykiss) in decoupled aquaponic systems. Our focus was on assessing their impact on water quality parameters within the aquaponic setup and evaluating the growth performance of the fish, including final weight (FW), condition factor (K), coefficient of variation (c.v.) in weight, specific growth rate (SGR), total feed intake (g/fish), feed conversion rate (FCR), hepatosomatic index (HSI), and viscerosomatic index (VSI), as well as the growth of lettuce (Lactuca sativa L...
February 19, 2024: Journal of Fish Biology
https://read.qxmd.com/read/38359764/fulvic-acid-modulates-mucosal-immunity-in-fish-skin-sustainable-aquaculture-solution-or-environmental-risk-factor
#30
JOURNAL ARTICLE
Thora Lieke, Vlastimil Stejskal, Sascha Behrens, Christian E W Steinberg, Thomas Meinelt
This is the first study determining the effects of bath exposure to fulvic acid, a humic substance, on the skin mucosal immunity of rainbow trout (Oncorhynchus mykiss). Humic substances have recently been gaining attention for their increasing concentrations in aquatic ecosystems and their use as supplements in sustainable aquaculture. This study demonstrated that water exposure to fulvic acid at concentrations of 5 mg C/L and 50 mg C/L increased lysozyme and alkaline phosphatase activities in the mucus by approximately 2-fold and 2...
February 8, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38355704/probiotic-performance-of-b-subtilis-ms-45-improves-aquaculture-of-rainbow-trout-oncorhynchus-mykiss-during-acute-hypoxia-stress
#31
JOURNAL ARTICLE
Alireza Neissi, Hamed Majidi Zahed, Reza Roshan
The aim of this study was to produce mutant strains of Bacillus subtilis with high probiotic performance for use in the aquaculture of rainbow trout Oncorhynchus mykiss. The main strain of B. subtilis (MS) was irradiated with gamma rays (5.3 KGy). Subsequently, the B. subtilis mutant strain no. 45 (MS. 45) was selected for bacterial growth performance, resistance to acidic conditions, resistance to bile salts and antibacterial activity against Aeromonas hydrophila and Pseudomonas fluorescens. After 60 days, the rainbow trout (70...
February 14, 2024: Scientific Reports
https://read.qxmd.com/read/38343780/a-genomic-region-associated-with-iteroparous-spawning-phenology-is-linked-with-age-at-maturity-in-female-steelhead-trout
#32
JOURNAL ARTICLE
Stuart Willis, Jeff Stephenson, Andrew Pierce, Lea Medeiros, Laura Jenkins, Douglas R Hatch, Shawn Narum
Age-at-maturity and iteroparity are two life history variations of steelhead trout ( Oncorhynchus mykiss ) that are believed to increase population resilience and stability. While repeat-spawning individuals are thought to have historically made up a substantial portion of the reproductive population in the Columbia River and the majority of females still attempt outmigration as kelts, return rates of repeat-spawner are low throughout the basin and below 1% for the furthest migrating stocks. Notably, outmigrating adults exhibit variation in rematuration phenology, displaying either "consecutive" (reproduce immediately the following season) or "skip" (delay spawning for future seasons) spawning patterns...
February 2024: Evolutionary Applications
https://read.qxmd.com/read/38343774/efficient-population-representation-with-more-genetic-markers-increases-performance-of-a-steelhead-oncorhynchus-mykiss-genetic-stock-identification-baseline
#33
JOURNAL ARTICLE
John S Hargrove, Thomas A Delomas, John H Powell, Jon E Hess, Shawn R Narum, Matthew R Campbell
Genetic stock identification (GSI) is an important fisheries management tool to identify the origin of fish harvested in mixed stock fisheries. Periodic updates of genetic baselines can improve performance via the addition of unsampled or under-sampled populations and the inclusion of more informative markers. We used a combination of baselines to evaluate how population representation, marker number, and marker type affected the performance and accuracy of genetic stock assignments (self-assignment, bias, and holdout group tests) for steelhead ( Oncorhynchus mykiss ) in the Snake River basin...
February 2024: Evolutionary Applications
https://read.qxmd.com/read/38343045/characterization-of-heat-labile-uracil-dna-glycosylase-from-oncorhynchus-mykiss-and-its-application-for-carry-over-contamination-control-in-rt-qpcr
#34
JOURNAL ARTICLE
Qingyuan Huang, Yaqi Zhang, Wenhao Hu, Keqi Chen, Jian Zhang, Zhidan Luo, Chen Lu
BACKGROUND: Heat-labile uracil-DNA glycosylase (HL-UDG) is commonly employed to eliminate carry-over contamination in DNA amplifications. However, the prevailing HL-UDG is markedly inactivated at 50°C, rendering it unsuitable for specific one-step RT-qPCR protocols utilizing reverse transcriptase at an optimal temperature of 42°C. OBJECTIVE: This study aimed to explore novel HL-UDG with lower inactivation temperature and for recombinant expression. METHODS: The gene encoding an HL-UDG was cloned from the cold-water fish rainbow trout (Oncorhynchus mykiss) and expressed in Escherichia coli with high yield...
February 9, 2024: Protein and Peptide Letters
https://read.qxmd.com/read/38340910/a-model-naphthenic-acid-decouples-oxidative-phosphorylation-through-selective-inhibition-of-mitochondrial-complex-activity
#35
JOURNAL ARTICLE
Zahra Kalvani, Collins Kamunde, Don Stevens, Michael R van den Heuvel
The naphthenic acid fraction compound (NAFC), 3,5-dimethyladamantane-1-acetic acid, was tested for its ability to uncouple mitochondrial oxidative phosphorylation. Mitochondria isolated from rainbow trout (Oncorhynchus mykiss) liver were exposed to 3,5-dimethyladamantane-1-acetic acid in state 3 and 4 respiration and mitochondrial membrane potential were quantified. Electron transport chain (ETC) protein complexes were isolated using pharmacological agents and inhibitors, and their activities measured. The NAFC compound completely inhibited states 3 and 4 respiration with an IC50 of 0...
February 8, 2024: Environmental Toxicology and Pharmacology
https://read.qxmd.com/read/38340819/non-microcystin-extracellular-metabolites-of-microcystis-aeruginosa-impair-viability-and-reproductive-gene-expression-in-rainbow-trout-cell-lines
#36
JOURNAL ARTICLE
Keira Harshaw, Ambreen Fahim, Jinmei Zi, P Charukeshi Chandrasekera, Xuexiu Chang, Brian Dixon, Hugh J MacIsaac
Microcystis aeruginosa is a ubiquitous freshwater cyanobacterium best known for producing hepatotoxic microcystins; however, this common bloom-forming species also produces myriad biologically active and potentially deleterious other metabolites. Our understanding of the effects of these non-microcystin metabolites on fish is limited. In this study, we evaluated cytotoxicity of extracellular metabolites harvested from both microcystin-producing (MC+) and non-producing (MC-) strains of M. aeruginosa on rainbow trout (Oncorhynchus mykiss) cell lines derived from tissues of the brain, pituitary, heart, gonads, gills, skin, liver, and milt...
February 8, 2024: Science of the Total Environment
https://read.qxmd.com/read/38329152/effects-of-water-quality-on-palladium-induced-olfactory-toxicity-and-bioaccumulation-in-rainbow-trout-oncorhynchus-mykiss
#37
JOURNAL ARTICLE
Carolyn Simonis, Lauren Zink, Sarah E Johnston, Matthew Bogard, Gregory G Pyle
Through emission processes, palladium (Pd) particulates from industrial sources are introduced into a range of ecosystems including freshwater environments. Despite this, research on Pd-induced bioaccumulation, uptake, and toxicity is limited for freshwater fishes. Unlike other metals, there are currently no regulations or protective guidelines to limit Pd release into aquatic systems, indicating a global absence of measures addressing its environmental impact. To assess the olfactory toxicity potential of Pd, the present study aimed to explore Pd accumulation in olfactory tissues, olfactory disruption, and oxidative stress in rainbow trout (Oncorhynchus mykiss) following waterborne Pd exposure...
February 8, 2024: Integrated Environmental Assessment and Management
https://read.qxmd.com/read/38326995/testing-the-detoxification-power-of-black-cumin-oil-nigella-sativa-over-cypermethrin-insecticide-effects-in-rainbow-trout-oncorhynchus-mykiss-at-multiple-scales
#38
JOURNAL ARTICLE
Veysel Karani Gültekin, Muhammed Atamanalp, Arzu Ucar, Gonca Alak, Veysel Parlak
This study investigated the curative effect of black cumin oil ( Nigella sativa , NS), which is a phytotherapeutic agent against to cypermethrin (CYP), which is known to have adverse effects on rainbow trout ( Oncorhynchus mykiss )'s behavioral changes, oxidative stress-mediated neurotoxicity, hematotoxicity and hepatotoxicity parameters.At the end of the trial period; (i) evaluation of critical swimming speed (Ucrit ) (ii) hematology indices [white blood cell (WBC), red blood cell (RBC), hemoglobin (Hgb), hematocrit (Hct), mean cell volume (MCV), mean cell hemoglobin) (MCH), mean cell hemoglobin concentration (MCHC)] (iii) Elucidation of the mechanism of functional damage in brain tissue of O...
February 7, 2024: Drug and Chemical Toxicology
https://read.qxmd.com/read/38309055/maternal-dietary-choline-levels-cause-transcriptome-shift-due-to-genotype-by-diet-interactions-in-rainbow-trout-oncorhynchus-mykiss
#39
JOURNAL ARTICLE
Khalid Freij, Beth Cleveland, Peggy Biga
The objective of this study was to identify metabolic regulatory mechanisms affected by choline availability in rainbow trout (Oncorhynchus mykiss) broodstock diets associated with increased offspring growth performance. Three customized diets were formulated to have different levels of choline: (a) 0 % choline supplementation (Low Choline: 2065 ppm choline), (b) 0.6 % choline supplementation (Medium Choline: 5657 ppm choline), and (c) 1.2 % choline supplementation (High Choline: 9248 ppm choline)...
January 20, 2024: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://read.qxmd.com/read/38298071/complete-genome-sequence-and-potential-pathogenic-assessment-of-flavobacterium-plurextorum-rsg-18-isolated-from-the-gut-of-schlegel-s-black-rockfish-sebastes-schlegelii
#40
JOURNAL ARTICLE
Jisol Lee, In-Tae Cha, Ki-Eun Lee, Youn Kyoung Son, Seoae Cho, Donghyeok Seol
Flavobacterium plurextorum is a potential fish pathogen of interest, previously isolated from diseased rainbow trout (Oncorhynchus mykiss) and oomycete-infected chum salmon (Oncorhynchus keta) eggs. We report here the first complete genome sequence of F. plurextorum RSG-18 isolated from the gut of Schlegel's black rockfish (Sebastes schlegelii). The genome of RSG-18 consists of a circular chromosome of 5,610,911 bp with a 33.57% GC content, containing 4858 protein-coding genes, 18 rRNAs, 63 tRNAs and 1 tmRNA...
January 31, 2024: Environmental Microbiology Reports
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