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223
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ShareScore release 0.7.1
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223 results for “Danio rerio”
Danio rerio (Cyprinidae) - whole organism - embryo
Image of Danio rerio (Cyprinidae) - whole organism - embryo
Danio rerio (Cyprinidae) - whole organism- embryo
Image of Danio rerio (Cyprinidae) - whole organism - embryo
Danio rerio (Cyprinidae) - whole organism - embryo
Image of Danio rerio (Cyprinidae) - whole organism - embryo
Danio rerio (Cyprinidae) - whole organism - embryo
Image of Danio rerio (Cyprinidae) - whole organism - embryo
Danio rerio (Cyprinidae) - whole organism - embryo
Image of Danio rerio (Cyprinidae) - whole organism - embryo
Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio)
<p>Human-driven increases in global mean temperatures are associated with concomitant increases in thermal variability. Yet, few studies have explored the impacts of thermal variability on fitness-related traits, limiting our ability to predict how organisms will respond to dynamic thermal changes. Among the myriad organismal responses to thermal variability, one of the most proximate to fitness – and, thus, a population's ability to persist - is reproduction. Here, we examine how a model freshwater fish (Danio rerio) responds to diel thermal fluctuations that span the species' viable developmental range of temperatures. We specifically investigate reproductive performance metrics including spawning success, fecundity, egg provisioning, and sperm concentration. Notably, we apply thermal variability treatments during two ontogenetic timepoints to disentangle the relative effects of developmental plasticity and reversible acclimation. We found evidence of direct, negative effects of thermal variability during later ontogenetic stages on reproductive performance metrics. We also found complex interactive effects of early and late-life exposure to thermal variability, with evidence of beneficial acclimation of spawning success and modification of the relationship between fecundity and egg provisioning. Our findings illuminate the plastic life-history modifications that fish may undergo as their thermal environments become increasingly variable.</p>
Danio rerio (Cyprinidae) - whole organism - adult lateral view
Image of Danio rerio (Cyprinidae) - whole organism - adult lateral view
Danio rerio (Cyprinidae) - whole organism - adult
Image of Danio rerio (Cyprinidae) - whole organism - adult
Danio rerio (Cyprinidae) - whole organism - adult lateral view
Image of Danio rerio (Cyprinidae) - whole organism - adult lateral view
Danio rerio (Cyprinidae) - whole organism - adult
Image of Danio rerio (Cyprinidae) - whole organism - adult
Fig 7 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 7: From manual counts of selected tissue sections of zebrafish fed increasing proportions of food waste-based Converted Fish Flakes (CFF) for 32 days. Average number of goblet cells in intestine sections (A) and average number of hepatocytes with vacuolar lipid accumulation in liver sections (B). Error bars represent ± one standard deviation, n=3. Groups with the same asterisk (* or **) share the same level of statistical significance
Fig 3 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 3: Growth in zebrafish-fed diets with increasing proportions of Converted Fish Flakes (CFF) for 32 days. Average percent change in weight in Trial 1 (A) and Trial 2 (B). Average percent change in length in Trial 1 (C) and Trial 2 (D). Error bars represent ± one standard deviation, n=3. Groups with the same asterisk (* or **) share the same level of statistical significance, groups without an asterisk share both levels.
Fig 6 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 6: Representative images from sample of zebrafish fed with increasing proportions of food waste-based Converted Fish Flakes (CFF) for 32 days sent for histological analysis of intestine (paraffin embedding, 5 µm sections, stained with Hemotoxylin & Eosin and Sudan IV) of intestines of male (A-C); and female (D-F); liver of males (G-I) and liver of females (J-L)
Fig 2 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 2: Survival of zebrafish that were fed with diets of increasing proportions of food waste-based CFF in Trial 1 (A) and Trial 2 (B).
Figure 5 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Figure 5. Average VSI in zebrafish-fed diets containing increasing proportions of Converted Fish Flakes (CFF) for 32 days. n=3. Error bars represent ± one standard deviation. No significant difference was found between groups using a Kruskal-Wallis test
Fig 4 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 4: Average fecundity (A) and embryo survival rates (B) in zebrafish fed with diets containing increasing proportions of Converted Fish Flakes (CFF) for 32 days. n=3. Error bars represent ± one standard deviation. No significant difference was found between groups using a oneway ANOVA
Fig 1 in Recycling and repurposing food waste as feed for small-scale zebrafish (Danio rerio) aquaculture
Fig 1: Collection and production of food waste-based feed for a small-scale aquaculture study using zebrafish. (A & B) Some parts of food, such as peels, rinds, and stems, are separated during food preparation as pre-consumer food waste and are collected in designated bins to reduce contamination with undesirable materials such as paper, plastic, and chemicals. (C) To produce palatable and consistent feed, only a few food items were selected and processed. After collection food was frozen, then cooked, and portioned to contain 38% protein by weight. The cooked portions were then processed with a food processor into a smooth paste, which was dried in a dehydrator (D) to produce Converted Fish Flakes (CFF). (E-F) Commercial egg yolk fish flakes from pentair (E), Mixtures of CFF with commercial egg yolk fish flakes at different ratios of 25% (F), 50% (G) and 100% (H).
Figure 4 in Use of melatonin as an inhibitor of apoptotic process for cryopreservation of zebrafish (Danio rerio) embryos
Figure 4. Representative images of zebrafish (Danio rerio) embryos showing reactive oxygen species (ROS) formation (A-D) and DNA fragmentation (E-H) following vitrification for the control group and vitrified treatments with 0, 1 µM and 1 mM melatonin respectively. Arrows and arrow heads point to tissues affected in the body axis and those in close proximity to the yolk respectively.
Figure 3 in Use of melatonin as an inhibitor of apoptotic process for cryopreservation of zebrafish (Danio rerio) embryos
Figure 3. Percentage area of zebrafish (Danio rerio) embryos affected by reactive oxygen species (ROS) formation and DNA fragmentation after vitrification for the control group and vitrified treatments with 0, 1 µM and 1 mM melatonin respectively. Bars with different letter within the same assay were significantly different from one another (P <0.05).
Figure 2 in Use of melatonin as an inhibitor of apoptotic process for cryopreservation of zebrafish (Danio rerio) embryos
Figure 2. Bax, bcl-2 and caspase-3 mRNA expression levels in zebrafish (Danio rerio) embryos for the control group and vitrified treatments with 0, 1 µM and 1 mM melatonin respectively obtained by the 2-∆∆CT method. Boxes with same letter are not significantly different from one another (P> 0.05).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research 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.