Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

The effect of Atlantic salmon smolts quality, robustness and welfare on resistance towards a challenge with Piscirickettsia salmonis

ABSTRACT: Mortalities due to infectious diseases is a long-term issue causing important economic losses to the Atlantic salmon industry worldwide. Producing better quality and more robust smolts before transfer to seawater cages may be an important measure to reduce mortalities and improve welfare. Exercise training fish while in fresh water tanks has proven to improve not just the cardiorespiratory capacity of fish, but also their growth potential and to stimulate the immune system thus increasing the survival rate when faced to an infection. In this study, we evaluated how subjecting the fish to exercising conditions by swimming in the tanks at water speeds considered optimal could improve their robustness and welfare, as well as their resistance to a P. salmonis controlled challenge. Compared to the control (untrained group), trained fish showed a better growth and better fin quality among other production-relevant parameters. Transcriptomic analyses indicated that training promoted an over-expression of genes involved in the cellular arm of the immune system. Furthermore, there was a massive effect of training on the cardiac muscle transcriptome, including genes that could be grouped into functional mechanisms such as metabolism, cellular and immune processes. Exercise training also promoted healthier liver and gills as shown by histopathological observations. Finally, the exercise regime did not improve resistance on the disease challenge with P. salmonis.

ORGANISM(S): Salmo salar

PROVIDER: GSE173095 | GEO | 2021/04/23

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

WELFARE OF RAINBOW TROUT AT SLAUGHTER: INTEGRATING BEHAVIOURAL, PHYSIOLOGICAL, PROTEOMIC AND QUALITY INDICATORS

Project description:This study compared the brain proteome response of fish submitted to cold shock by fast-chilling (FC) as a novel stunning method (with fish immersed in liquid water at -8ºC), asphyxia (ASP) (as the currently used method), electrical stunning (ES) and anaesthesia (AN) with MS-222, by integrating it with physiological, behavioural and quality welfare indicators. Fish trials were conducted in triplicate tanks and two fish per tank were randomly sampled for MS analysis. One of the objectives of this integrative work was to disclose most significant changes in the brain proteome of rainbow trout (O. mykiss) subjected to four types of stunning methods that could help to elucidate about welfare standards.

2024-01-10 | PXD044301 | Pride

SEA BREAM PATH_INTEST

Project description:To determine the effects on the intestine gene expression of pathogen exposure to Enteromyxum leei. One fish group was exposed to E. leei-contaminated effluent (recipient group = R) . R fish (n= 66, average weight = 134 g) were placed in two replicated 200L fibre-glass tanks which were set to receive exclusively the effluent water from another tank containing 24 infected (donors = D; average weight = 127.3 g; prevalence of infection = 54%) gilthead sea bream. The D to R fish ratio was 0.8. Other 66 naïve fish were allocated in two replicated tanks (control group = CTRL) under the same conditions, but without receiving contaminated effluent. Over the course of the study, day length followed natural changes and water was heated in order to keep temperature always above 18ºC, the range was 18-23 ºC. Water was 5 µm-filtered and UV irradiated, and salinity was 37.5‰. Water flow was 10L/min and oxygen content of outlet water remained higher than 85%saturation. All fish were fed daily a commercial dry pellet diet at about 1% of body weight. Disease signs and daily mortalities were recorded throughout the experiments. The parasitic status of dead fish was checked by microscopic examination of fresh intestinal scrapings. Fish were sampled after 113 days post exposure (p.e.). Feeding was stopped one day prior to the sampling to ensure that the digestive tract was empty. Head kidney and posterior intestine were rapidly excised, frozen in liquid nitrogen, and stored at -80 °C until RNA extraction and analysis. Keywords: Treated/Untreated, confinement, cortisol, stress response, time course, microarray

2010-03-25 | GSE19646 | GEO

Transcription profiling of Danio rerio livers following exposure to combinations of copper, sodium and calcium

Project description:Zebrafish (n=420; 70/treatment) were weighed and placed in 8L aerated tanks, served with flow-through soft-water at 25ml/min. A combination of Mariotte bottles were used to dose tanks with Cu (concentrated Cu solution made from CuSO4 dissolved in 0.05% HNO3), Na (concentrated NaCl solution), and Ca (concentrated CaCl2 solution) to 6 treatment regimes of either control (Ctrl), Cu only (Cu), high Ca only (Ca), Ca + Cu (CaCu), high Na only (Na), and Na + Cu (NaCu; See Table 1 for ion concentrations). Nitric acid had no measurable impact on water pH. Fish were fed 2% body weight of commercial tropical fish food, once per day. Tanks were monitored daily for mortality and cleaned of any food or waste that had accumulated. Water samples (10 ml) were taken from each tank, filtered though a 0.45?m filtration disc (Pall Corporation, East Hills, NY), added to a plastic tube containing 100?l HNO3 and kept at 4oC for analysis of ion content and Cu concentration. Throughout the experiment, there were no mortalities in any of the tanks. At the end of the exposure period, fish were quickly euthanized by overdose of buffered aesthetic (MS-222, Sigma) and sampled for gill, liver, and gut, which were immediately frozen in liquid N2 for further analysis of Cu burden, gene expression, and enzyme activity.

2009-09-01 | E-MEXP-2288 | biostudies-arrayexpress

SEA BREAM PATH_INTEST

Project description:To determine the effects on the intestine gene expression of pathogen exposure to Enteromyxum leei. One fish group was exposed to E. leei-contaminated effluent (recipient group = R) . R fish (n= 66, average weight = 134 g) were placed in two replicated 200L fibre-glass tanks which were set to receive exclusively the effluent water from another tank containing 24 infected (donors = D; average weight = 127.3 g; prevalence of infection = 54%) gilthead sea bream. The D to R fish ratio was 0.8. Other 66 naÃ¯ve fish were allocated in two replicated tanks (control group = CTRL) under the same conditions, but without receiving contaminated effluent. Over the course of the study, day length followed natural changes and water was heated in order to keep temperature always above 18ÂºC, the range was 18-23 ÂºC. Water was 5 Âµm-filtered and UV irradiated, and salinity was 37.5â°. Water flow was 10L/min and oxygen content of outlet water remained higher than 85%saturation. All fish were fed daily a commercial dry pellet diet at about 1% of body weight. Disease signs and daily mortalities were recorded throughout the experiments. The parasitic status of dead fish was checked by microscopic examination of fresh intestinal scrapings. Fish were sampled after 113 days post exposure (p.e.). Feeding was stopped one day prior to the sampling to ensure that the digestive tract was empty. Head kidney and posterior intestine were rapidly excised, frozen in liquid nitrogen, and stored at -80 Â°C until RNA extraction and analysis. Keywords: Treated/Untreated, confinement, cortisol, stress response, time course, microarray 28 intestine samples - Twenty eight slides were hybridised using a reference design. Three groups (control, infected and non-infected) were compared using five individual fish in each group. Each sample was hybridised twice - the second being a dye-swap of the first.

2010-06-05 | E-GEOD-19646 | biostudies-arrayexpress

Exercise training effects on disease resistance are dependent on training regimes and inherent swimming performance in Atlantic salmon

Project description:Atlantic salmon juveniles were screened for swimming performance and separated into either poor or good swimmers. After ten weeks of rearing in fresh water, during which both swimming performance groups were part of an exercise training experiment, fish were transferred to seawater and challenged with infectious pancreatic necrosis virus (IPNV) in a co-habitation test. When mortality curve levelled out (45 days post commencement of challenge test), fish that had previously been categorized as good swimmers displayed a significantly higher survival (86.1%) compared to poor swimmers (77.6%). Global gene expression analyses were performed to search for disease resistance correlates. Cardiac ventricle expression of 21 genes was greater in poor swimmers than in good swimmers. These genes were previously classified as virus-responsive genes (VRGs), being reliable markers of viral load. This suggested that inherent swimming performance is associated with higher disease resistance. Atlantic salmon post-smolts belonging to groups previously classified as either poor or good swimmers were challenged with infectious pancreatic necrosis virus (IPNV). Heart ventricle was sampled from challenged and unchallenged fish on day 45 post-commencement of the challenge (when no more mortalities were registered). Nine poor swimmers and nine good swimmers were hybridized against a common reference sample composed of nine unchallenged fish.

2012-06-08 | E-GEOD-38603 | biostudies-arrayexpress

Shotgun proteomics of Sparus aurata hepatic stress response

Project description:This study characterizes the liver stress proteome of fish submitted to overcrowding (OC), repeated net-handling (NET) and hypoxia (HYP). Fish trials were conducted in triplicate tanks and two fish per tank were randomly sampled for MS analysis. This work aims to disclose most significant changes in signaling and metabolic pathways involved in the stress response. This data-driven knowledge may ultimately contribute for the improvement of species-specific welfare management protocols, towards a sustainable aquaculture.

2022-12-13 | PXD036392 | Pride

stress response

Project description:Hybridization of one kidney of cortisol treated fish vs. one kidney of control fish. Kidneys were collected from untreated juvenile sea bream (n=4) and from fish, which received for 72h a coconut-oil implant containing 10mg/Kg (fish wet weight) (n=4) cortisol. Experiments were carried out at the University of the Algarve, Portugal in accordance with National legislation for the welfare of animals. Experiments were conducted in two 125 l cylindriconical tanks supplied with a continuous through-flow of oxygenated seawater at 20+1 °C using juvenile sea bream (25 g + 3 g) adapted for 1 week to the experimental conditions. One tank contained 8 untreated fish (control) and the other tank 8 cortisol treated fish and the end of experiments fish were removed form tanks, decapitated and the kidneys rapidly removed and place in RNAlater (Qiagen) at –20 °C. No mortality occurred in the control tank but 2 fish died in the cortisol treated tank. Keywords: other

2007-01-26 | GSE2064 | GEO

Resistance to aerobic exercise training causes metabolic dysfunction and reveals novel exercise-regulated signaling networks

Project description:Low aerobic exercise capacity is a risk factor for diabetes and strong predictor of mortality; yet some individuals are exercise resistant, and unable to improve exercise capacity through exercise training. To test the hypothesis that resistance to aerobic exercise training underlies metabolic disease-risk, we used selective breeding for 15 generation to develop rat models of low- and high-aerobic response to training. Before exercise training, rats selected as low- and high-responders had similar exercise capacities. However, after 8-wks of treadmill training low-responders failed to improve their exercise capacity, while high-responders improved by 54%. Remarkably, low-responders to aerobic training exhibited pronounced metabolic dysfunction characterized by insulin resistance and increased adiposity, demonstrating that the exercise resistant phenotype segregates with disease risk. Low-responders had impaired exercise-induced angiogenes0is in muscle; however, mitochondrial capacity was intact and increased normally with exercise training, demonstrating that mitochondria are not limiting for aerobic adaptation or responsible for metabolic dysfunction in low-responders. Low-responders had increased stress/inflammatory signaling and altered TGFM-NM-2 signaling, characterized by hyperphosphorylation of a novel exercise-regulated phosphorylation site on SMAD2. Using this powerful biological model system we have discovered key pathways for low exercise training response that may represent novel targets for the treatment of metabolic disease. Cardiac and skeletal muscle from 3 high and 3 low responder rats were examined for differential miRNA expression using Exiqon microarrays

2014-05-23 | E-GEOD-57880 | biostudies-arrayexpress

stress response

Project description:Hybridization of one kidney of cortisol treated fish vs. one kidney of control fish. Kidneys were collected from untreated juvenile sea bream (n=4) and from fish, which received for 72h a coconut-oil implant containing 10mg/Kg (fish wet weight) (n=4) cortisol. Experiments were carried out at the University of the Algarve, Portugal in accordance with National legislation for the welfare of animals. Experiments were conducted in two 125 l cylindriconical tanks supplied with a continuous through-flow of oxygenated seawater at 20+1 Â°C using juvenile sea bream (25 g + 3 g) adapted for 1 week to the experimental conditions. One tank contained 8 untreated fish (control) and the other tank 8 cortisol treated fish and the end of experiments fish were removed form tanks, decapitated and the kidneys rapidly removed and place in RNAlater (Qiagen) at â20 Â°C. No mortality occurred in the control tank but 2 fish died in the cortisol treated tank.

2010-06-11 | E-GEOD-2064 | biostudies-arrayexpress

Resistance to aerobic exercise training causes metabolic dysfunction and reveals novel exercise-regulated signaling networks

Project description:Low aerobic exercise capacity is a risk factor for diabetes and strong predictor of mortality; yet some individuals are exercise resistant, and unable to improve exercise capacity through exercise training. To test the hypothesis that resistance to aerobic exercise training underlies metabolic disease-risk, we used selective breeding for 15 generation to develop rat models of low- and high-aerobic response to training. Before exercise training, rats selected as low- and high-responders had similar exercise capacities. However, after 8-wks of treadmill training low-responders failed to improve their exercise capacity, while high-responders improved by 54%. Remarkably, low-responders to aerobic training exhibited pronounced metabolic dysfunction characterized by insulin resistance and increased adiposity, demonstrating that the exercise resistant phenotype segregates with disease risk. Low-responders had impaired exercise-induced angiogenes0is in muscle; however, mitochondrial capacity was intact and increased normally with exercise training, demonstrating that mitochondria are not limiting for aerobic adaptation or responsible for metabolic dysfunction in low-responders. Low-responders had increased stress/inflammatory signaling and altered TGFβ signaling, characterized by hyperphosphorylation of a novel exercise-regulated phosphorylation site on SMAD2. Using this powerful biological model system we have discovered key pathways for low exercise training response that may represent novel targets for the treatment of metabolic disease.

2014-05-23 | GSE57880 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data