Differences in shoaling behavior in two species of freshwater fish (Danio rerio and Hyphessobrycon herbertaxelrodi).

2016 ◽  
Vol 130 (4) ◽  
pp. 358-368 ◽  
Author(s):  
Elisabet Gimeno ◽  
Vicenç Quera ◽  
Francesc S. Beltran ◽  
Ruth Dolado
Keyword(s):  
Freshwater Fish ◽  
Danio Rerio ◽  
Shoaling Behavior

Toxicity and chronic effects of deltamethrin exposure on zebrafish (Danio rerio) as a reference model for freshwater fish community

2019 ◽  
Vol 171 ◽  
pp. 854-862 ◽  
Author(s):  
Stefan-Adrian Strungaru ◽  
Gabriel Plavan ◽  
Alin Ciobica ◽  
Mircea Nicoara ◽  
Madalina Andreea Robea ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Danio Rerio ◽  
Fish Community ◽  
Reference Model ◽  
Chronic Effects

Liver Alterations in Two Freshwater Fish Species (Carassius auratus and Danio rerio) Following Exposure to Different TiO2 Nanoparticle Concentrations

2013 ◽  
Vol 19 (5) ◽  
pp. 1131-1140 ◽  
Author(s):  
Mário S. Diniz ◽  
António P. Alves de Matos ◽  
Joana Lourenço ◽  
Luísa Castro ◽  
Isabel Peres ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Freshwater Fish ◽  
Fish Species ◽  
Danio Rerio ◽  
Carassius Auratus ◽  
Tap Water ◽  
Light And Electron Microscopy ◽  
Partial Recovery ◽  
Activity Increase ◽  
Freshwater Fish Species

AbstractThe toxicity of titanium dioxide nanoparticles (TIO2 NPs) and oxidative stress effects were studied in two freshwater fish species (Carassius auratus and Danio rerio) exposed for 21 days to different concentrations (0.01, 0.1, 1, 10, 100/mgL) of TiO2 NPs and to a control (tap water). Additional fish were transferred to clean water for 14 days to assess the ability to recover from exposure to TiO2 NPs. Activities of the enzyme glutathione-S-transferase (GST) and lipid peroxidation (LPO) (malondialdheyde) were measured as indicators of oxidative stress. Histological and ultra-structural changes in livers from bothspecies of fish were evaluated by light and electron microscopy. Results show a general GST activity increase according to TiO2 NPs concentrations, which is in agreement with data from LPO. After 21 days, GST activities decreased possibly caused by suppression of GST synthesis as a result of severe stress. Histological and ultra-structural analysis of livers from exposed fish show degeneration of the hepatic tissue and alterations in hepatocytes such as glycogen depletion and an increase in lipofucsin lysosome-like granules. After a depuration period a partial recovery for biochemical markers and cells was observed. The results suggest that TiO2 promotes alterations in hepatic tissues compatible with oxidative stress.

Evaluation of anti-cancer effect of zerumbone and cisplatin on N-nitrosodiethylamine induced hepatic cancer in freshwater fish (Danio rerio)

2021 ◽  
pp. 1-5
Author(s):  
Jegannathan Srimathi Devi ◽  
Dayalan Haripriya ◽  
Santhosh Arul ◽  
Konda Mani Saravanan ◽  
Giridharan Bupesh
Keyword(s):  
Freshwater Fish ◽  
Danio Rerio ◽  
Hepatic Cancer ◽  
Anti Cancer

BrdU-4Na-EDTA-Giemsa band karyotypes of 3 small freshwater fish, Danio rerio, Oryzias latipes, and Rhodeus ocellatus

Genome ◽  
1999 ◽  
Vol 42 (3) ◽  
pp. 531-535 ◽  
Author(s):  
T Ueda ◽  
H Naoi
Keyword(s):  
Freshwater Fish ◽  
Mitotic Index ◽  
Fish Species ◽  
Danio Rerio ◽  
Oryzias Latipes ◽  
Giemsa Staining ◽  
Banding Technique ◽  
Metaphase Chromosomes ◽  
Embryo Cells ◽  
Rhodeus Ocellatus

The 4Na-EDTA-Giemsa staining of metaphase chromosomes from embryos of three small freshwater fish, zebrafish Danio rerio, medakafish Oryzias latipes, and rosy bitterling Rhodeus ocellatus, in the presence of BrdU for one cycle gave rise to clear bands along the length of the chromosomes. These bands (B-bands) with G-band-like structures were clear and reproducible. However, as distinct B-bands were observed only in elongated chromosomes, fine chromosome preparations with a high mitotic index and elongated chromosomes were required. A technique for making preparations from embryo cells satisfied this request. The B-banding technique applied to embryo cells is useful to analyze chromosomes of fish species in which ordinary G-banding techniques have been known to bring about only unsatisfactory results.Key words: B-bands, karyotype, Danio rerio, Oryzias latipes, Rhodeus ocellatus.

scholarly journals Daily variation in the shoaling behavior of zebrafish Danio rerio

2012 ◽  
Vol 58 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Timothy Paciorek ◽  
Scott Mcrobert
Keyword(s):  
Danio Rerio ◽  
Daily Variation ◽  
Gradual Increase ◽  
Environmental Cues ◽  
Dark Phase ◽  
Daily Variations ◽  
Lighting Conditions ◽  
Shoaling Behavior ◽  
The Mean ◽  
Fitness Benefits

Abstract Shoaling behavior provides numerous fitness benefits for fish, including enhanced access to mates, increased success in foraging and protection from predators. We were interested in determining whether shoaling intensity differed throughout the day. To do this we kept adult zebrafish Danio rerio in different lighting conditions for 10 days: “Normal” (12:12LD, lights on at 0800 hrs), “Reverse” (12:12LD, lights on at 2000 hrs), DD, or LL, and then observed the shoaling behavior at different times during the day. Our findings suggest that daily variations exist in shoaling behavior, with mean shoaling times for fish from the ‘normal’ group being the lowest at the mid–point of the dark phase in the fish’s subjective day (00:00 hrs), then rising significantly throughout the day, reaching their highest intensity at 20:00 hrs (lights out). Fish from the “reverse” LD cycle (lights on at 20:00 hrs) showed differences in the mean shoaling times at different times of day, but did not show a gradual increase in shoaling throughout their subjective day. Fish from the DD and LL groups did not show significant differences in the mean shoaling values at different times of day, suggesting that the differences observed in LD fish may not represent circadian rhythms. Therefore, these results demonstrate the existence of daily variations in the shoaling behavior of fish and suggest that environmental cues in the form of light/dark cycles play an important role in regulating these variations.

scholarly journals Effects of Ethanol on the Shoaling Behavior of Zebrafish (Danio Rerio)

Dose-Response ◽  
2010 ◽  
Vol 8 (4) ◽  
pp. dose-response.1 ◽  
Author(s):  
Anastasia Kurta ◽  
Brian G. Palestis
Keyword(s):  
Danio Rerio ◽  
Shoaling Behavior

17α-Ethinyl estradiol affects anxiety and shoaling behavior in adult male zebra fish (Danio rerio)

2011 ◽  
Vol 105 (1-2) ◽  
pp. 41-48 ◽  
Author(s):  
Nasim Reyhanian ◽  
Kristina Volkova ◽  
Stefan Hallgren ◽  
Tomas Bollner ◽  
Per-Erik Olsson ◽  
...  
Keyword(s):  
Adult Male ◽  
Danio Rerio ◽  
Ethinyl Estradiol ◽  
Zebra Fish ◽  
Shoaling Behavior

scholarly journals THE POSSIBILITY OF USING THE BIOLOGICAL MODEL OF FRESHWATER FISH DANIO RERIO IN PRECLINICAL RESEARCH

2020 ◽  
Vol 73 (1) ◽  
pp. 10-13
Author(s):  
A.V. Zub ◽  
◽  
V.L. Zagrebin ◽  
I.A. Dvoryashina ◽  
A.V. Terentev ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Danio Rerio ◽  
Biological Model ◽  
Preclinical Research

The Activation of Zebrafish Sperm Cells in a Micromixer

2013 ◽  
Author(s):  
Thomas F. Scherr ◽  
Gerald Knapp ◽  
Terrence Tiersch ◽  
W. Todd Monroe ◽  
Krishnaswamy Nandakumar
Keyword(s):  
Freshwater Fish ◽  
Danio Rerio ◽  
Human Disease ◽  
Model Organism ◽  
Sperm Cells ◽  
Vertebrate Development ◽  
Freezing And Thawing ◽  
Dna Mutation ◽  
On Demand ◽  
Model Strain

The freshwater fish, Danio rerio (zebrafish), have become widely used as a model organism for vertebrate development, DNA mutation, and human disease studies [1]. Maintaining live colonies of the numerous developed strains of zebrafish under investigation can be prohibitively costly. As such, there is a growing need to catalog their reproductive cells and have them available on demand [2]. Thus cryopreservation of model strain gametes has become an important endeavor, where evaluation of freezing and thawing techniques is currently a bottleneck to these procedures.

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