Larval rearing of the gudgeon, Gobio gobio L., under optimal conditions of feeding with the rotifer, Brachionus plicatilis O.F. Müller

Aquaculture ◽  
1989 ◽  
Vol 83 (3-4) ◽  
pp. 305-318 ◽  
Author(s):  
Patrick Kestemont ◽  
Aboubacar Awaïss
Keyword(s):  
Brachionus Plicatilis ◽  
Larval Rearing ◽  
Optimal Conditions ◽  
Rotifer Brachionus Plicatilis

scholarly journals Removal of Heavy Metal Ions from Wastewaters: An Application of Sodium Trithiocarbonate and Wastewater Toxicity Assessment

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 655
Author(s):  
Maciej Thomas ◽  
Violetta Kozik ◽  
Andrzej Bąk ◽  
Krzysztof Barbusiński ◽  
Joanna Jazowiecka-Rakus ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Wastewater ◽  
Brachionus Plicatilis ◽  
Toxicity Assessment ◽  
Optimal Conditions ◽  
Rotifer Brachionus Plicatilis ◽  
Removal Of Heavy Metals ◽  
Central Composite ◽  
Polluted Wastewater

The synthesis and application of sodium trithiocarbonate (Na2CS3) for the treatment of real galvanic wastewater in order to remove heavy metals (Cu, Cd and Zn) was investigated. A Central Composite Design/Response Surface Methodology (CCD/RSM) was employed to optimize the removal of heavy metals from industrial wastewater. Adequacy of approximated data was verified using Analysis of Variance (ANOVA). The calculated coefficients of determination (R2 and R2adj) were 0.9119 and 0.8532, respectively. Application of Na2CS3 conjugated with CCD/RSM allowed Cu, Cd and Zn levels to be decreased and, as a consequence, ∑Cu,Cd,Zn decreased by 99.80%, 97.78%, 99.78%, and 99.69%, respectively, by using Na2CS3 at 533 mg/L and pH 9.7, within 23 min. Implementation of conventional metal precipitation reagents (NaOH, Ca(OH)2 and CaO) at pH 11 within 23 min only decreased ∑Cu,Cd,Zn by 90.84%, 93.97% and 93.71%, respectively. Rotifer Brachionus plicatilis was used to conduct the assessment of wastewater toxicity. Following the application of Na2CS3, after 60 min the mortality of B. plicatilis was reduced from 90% to 25%. Engagement of Na2CS3 under optimal conditions caused the precipitation of heavy metals from the polluted wastewater and significantly decreased wastewater toxicity. In summary, Na2CS3 can be used as an effective heavy metal precipitating agent, especially for Cu, Cd and Zn.

scholarly journals Nutritional enrichment of rotifer Brachionus plicatilis and its effect on clownfish larvae Amphiprion clarkii (Bennett, 1830)

2017 ◽  
Vol 64 ◽  
Author(s):  
Swagat Ghosh ◽  
T. T. Ajith Kumar ◽  
Bandana Das Ghosh ◽  
N. C. Sahu
Keyword(s):  
Brachionus Plicatilis ◽  
Fish Larvae ◽  
Maximum Growth ◽  
Amino Acid Derivative ◽  
Control Group ◽  
Larval Rearing ◽  
Growth And Survival ◽  
Rotifer Brachionus Plicatilis ◽  
Total Unsaturated Fatty Acid ◽  
Amphiprion Clarkii

The present study, evaluated the effect of enrichment of the rotifer Brachionus plicatilis with the microalga Nannochloroposis salina, amino acid derivative L-carnitine and commercially available S-presso (SELCO). The study also evaluated the effect of enriched rotifers in larval rearing of Amphiprion clarkii in terms of metamorphosis, pigmentation, growth and survival of larvae.. Rotifer production increased by 43, 39 and 54% respectively in B. plicatilis enriched with different concentrations of L-carnitine at 1, 10 and 100 mg l-1 on day 4 (p<0.001) in comparison with the control group maintained on algal diet alone. Total unsaturated fatty acid (PUFA, HUFA and n-3 fatty acids) and the ratios of n-3/ n-6, DHA/EPA, EPA/AA were significantly higher (p<0.05) in the L-carnitine treated rotifers compared with the S-presso enriched as well N. salina enriched groups. Larvae of A. clarkii, fed with L-carnitine enriched rotifer achieved maximum growth of 56.92±0.2 mg; whereas, those fed S-presso treated rotifers attained only 48.74±1 mg. In L-carnitine enrichment; metamorphosis of clown fish larvae took only 10 days, while it took 11 days and 10 days respectively in S-presso and N. salina enrichment. In L-carnitine and S-presso enrichments, initial pigmentation of larvae was observed within first 3-4 days of culture, whereas it took 4-5 days in N. salina enrichment. L-carnitine enrichment resulted in the highest survival of 70%, followed by N. salina with 68% and S-presso enriched group with 52%. The results indicate that L-carnitine could be a recommendable enrichment for increasing rotifer production as well as for clown fish larval culture.

scholarly journals Using the Marine Rotifer Brachionus plicatilis as an Endpoint to Evaluate Whether ROS-Dependent Hemolytic Toxicity Is Involved in the Allelopathy Induced by Karenia mikimotoi

Toxins ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 439 ◽  
Author(s):  
Yuanyuan Li ◽  
Jianfei Yu ◽  
Tianli Sun ◽  
Chunchen Liu ◽  
Yu Sun ◽  
...  
Keyword(s):  
Cell Suspension ◽  
Brachionus Plicatilis ◽  
Intact Cell ◽  
Cell Suspensions ◽  
Intrinsic Rate Of Increase ◽  
Spawning Period ◽  
Karenia Mikimotoi ◽  
Rotifer Brachionus Plicatilis ◽  
Hemolytic Toxicity ◽  
Marine Rotifer

The toxic effects of the typically noxious bloom-forming dinoflagellate Karenia mikimotoi were studied using the allelopathic experimental system under controlled laboratory conditions. The potency of intact cell suspensions with whole cells, cell-free culture filtrate in different growth phases, and lysed cells with ultrasonication were compared, and the growth and reproduction of the marine rotifer Brachionus plicatilis were used as endpoints to evaluate toxic differences. The intact cell suspension resulted the most significant growth inhibition, including lethality, on the growth of B. plicatilis (p < 0.05). Lysed culture medium treated with ultrasonication and the cell-free culture filtrates at either the exponential or stationary phase exhibited limited negative impacts compared to the control according to changes in the population growth rate (r) and survival rate (p > 0.05). Reproduction presented a similar tendency to change, and the number of eggs produced per individual, as well as spawning period decreased in the whole cell and lysed cell suspensions. The key parameters in the lift table include the net reproductive rate (R0) and the intrinsic rate of increase (rm), which were more sensitive to treatment and were significantly suppressed compared to that of the control. The addition of the ROS inhibitor N-acetylcysteine (NAC) could not change the growth or reproduction patterns. Moreover, substantial hemolytic toxicity was found in the treatment of the intact cell suspension (p < 0.05), while limited toxicity was found in other treatments compared to that of the control. K. mikimotoi was speculated to secrete allelopathic substances onto the cell surface, and direct cell contact was necessary for allelopathic toxicity in B. plicatilis. Reactive oxygen species (ROS)-independent hemolytic toxicity was assumed to be the explanation for what was observed.

Factors Affecting Swimming Speed in the Rotifer Brachionus plicatilis

Hydrobiologia ◽  
2005 ◽  
Vol 546 (1) ◽  
pp. 375-380 ◽  
Author(s):  
Manuel Yúfera ◽  
E. Pascual ◽  
J.M. Olivares
Keyword(s):  
Swimming Speed ◽  
Brachionus Plicatilis ◽  
Factors Affecting ◽  
Rotifer Brachionus Plicatilis
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