Abstract The study focused on the development of co-cultivation schemes for Daphnia magna (Straus) and Desmodesmus armatus (Chod.) Hegew. Wastewater from a recirculating aquaculture system (RAS) was used as medium co-cultivation. Three D. algae that differed in timing introduction into were tested. Initially, cultivated to exponential growth phase until cell numbers reached 5 × 104 1 -1 . This algal culture introduced joint cultivation. added immediately same day or three six days after...

The results of using the waste water from recirculating aquaculture system for phyto- and zooplankton cultivation are presented in article. physico-chemical parameters system’s comparative culture media were recorded during hydrobionts cultivation. indicators productivity biochemical composition investigated cultures determined. analysis studied included investigations content total proteins, lipids, carbohydrates, carotenoids photosynthetic pigments. Using as a medium can significantly...

The maintenance of live feed in automatic feeders is accompanied by fasting fodder organisms, resultedin a lose their nutritional value and even death. way out this situation can be the joint Artemia nauplii objects – microalgae. Accordingly, an influence three microalgae monocultures (Desmodesmus armatus, Chlorella vulgaris, Dunaliella salina) AlgaMac Protein Plus drug on survival was analyzed. It shown that lowest mortality rates brine shrimp were observed when it co-cultivated with...

Abstract This study focused on testing Artemia sp. zooplankton saturation with freshwater microalgae biomass and then using this method to correct the nutritional composition of . Accordingly, influence three species microalgal monocultures was analyzed (2 – Desmodesmus armatus (Chod.) Hegew. Chlorella vulgaris Veijerinck; one halophilous Dunaliella viridis Teodor.). The algal were applied once in a quantity 2-3 × 10 6 cells l −1 for each 200,000 individuals hatched. control group did not...

The results of using the waste water from recirculating aquaculture system for phyto- and zooplankton cultivation are presented in article. physico-chemical parameters system’s comparative culture media were recorded during hydrobionts cultivation. indicators productivity biochemical composition investigated cultures determined. analysis studied included investigations content total proteins, lipids, carbohydrates, carotenoids photosynthetic pigments. Using as a medium can significantly...

The work is dedicated to the study of light source influence that has been modified with AgInS2 quantum dots on Nostoc commune culture in photobioreactor. A model three-section laboratory photobioreactor created. It was investigated modification doesn't lead changes physical parameters As a result, QD Ag:In = 1:20 resulted 1.5x increase biomass N. commune. amount pigments were also changed: maximum content chlorophyll (8.1 mg/g) established under conditions 3 using 1:7. carotenoids noticed...

Abstract Freshwater zooplankton, which is commonly used as a starting fish feed, has low content of essential compounds such carotenoids. The possibility increasing the productivity carotenogenic yeast, Rhodotorula glutinis , for further bioencapsulation zooplankton Daphnia magna shown. An association UV irradiated yeast strain with lactic acid bacteria was cultivated this purpose. This permitted intensifying carotenogenesis and â-carotene increased by 1.7 times, that torularodine 2.3 times...

With the help of optical methods fish functional state diagnostics possibility using DON-1R, a drug that contains γ–crotonolactone, in recirculating aquaculture system was proven. It stated adding DON-1R to granulated feed while feeding sturgeon stimulates raise mass accumulating velocity. Moreover, microscopical analysis histological cuts and detailed their photomicrographs with use various approaches contrasting images showed is accompanied reactive changes liver. In particular, received...

Various studies of the components antioxidant protection system microalgae D. armatus under influence osmotic stress and active forms oxygen will allow to develop methods for controlling carotenogenesis in a given culture obtain carotenoid enriched feed zooplankton. These made it possible evaluate activity catalase, peroxidase enzymes cells that are cultured induction by free radical oxidation promoters on background physiological changes. It is established these conditions, there an...

Various studies of the components antioxidant protection system microalgae D. armatus under influence osmotic stress and active forms oxygen will allow to develop methods for controlling carotenogenesis in a given culture obtain carotenoid enriched feed zooplankton. These made it possible evaluate activity catalase, peroxidase enzymes cells that are cultured induction by free radical oxidation promoters on background physiological changes. It is established these conditions, there an...

The article is devoted to the study of productivity mixed cultures microalgae Desmodesmus armatus (Chod.) Hegew. and Acutodesmus dimorphus (Turpin) Tsarenko. Algae were in following ratios: D/A (1:1), (1:2) (2:1). efficiency growing was compared with that for monocultures D. A. dimorphus. Mono- algae grown Tamiya 21 days, a climatic room. Every three amount biomass analyzed according density culture. By end stationary growth phase, mono- algal analyzed. It noted largest accumulates culture...

The study is devoted to an investigation of the effect NaCl concentration on productivity halophilic algae D. viridis. This a single-celled photosynthetic green that lack cell wall. viridis can grow at extremely high salinities and light intensities. Salt was added culture medium 0.1 M, 0,5 1,5 M 2 M. growth pattern depends in medium. It shown such resistant concentrations salt. In classical Artari, grows very rapidly accumulates maximum biomass end exponential phase. Changes salt Artari...

Стаття присвячена вивченню продуктивності змішаних культур мікроводоротей Desmodesmus armatus (Chod.) Hegew. та Acutodesmus dimorphus (Turpin) Tsarenko. Водорості змішували у наступних піввідношеннях: D/А (1:1), (1:2) (2:1). Ефективність вирощування порівнювали із такою для монокультур D. A. dimorphus. Моно- змішані культури водоростей вирощували на середовищі Тамія протягом 21 доби, в умовах кліматичної кімнати. Кожні три доби аналізували кількість біомаси за показником густини культури. На...

The atricle is devoted to the study of cultivation cyanobacteria Microcystis aeruginosa (Kützing) Kützing, pulverea (H.C.Wood) Forti. in presence basalt tuff. possibility using tuff as an adsorbing material for regulating number and preventing toxic “water bloom” fluid circuits. analyzes change biomass amount dynamics proportion dead response culture medium. It noted that use leads a decrease growth activity cultures , manifested increase cells slowdown accumulation cyanobacterial biomass....

We studied the possibility of using low frequency laser emission to improve production properties feed hydrobionts, in particular microalgae Desmodesmus armatus and Daphnia magna, which are highly applied aquaculture. It was shown that low-frequency with wavelength 650 nm has a positive influence on both phyto- zooplankton. In 24 hours biomass irradiated D. 25% larger than non-irradiated one. Meanwhile, application λ 420 530 did not show credible accumulation biomass. If it comes daphnia,...

The atricle is devoted to the study of cultivation cyanobacteria Microcystis aeruginosa (Kützing) Kützing, pulverea (H.C.Wood) Forti. in presence basalt tuff. possibility using tuff as an adsorbing material for regulating number and preventing toxic “water bloom” fluid circuits. analyzes change biomass amount dynamics proportion dead response culture medium. It noted that use leads a decrease growth activity cultures , manifested increase cells slowdown accumulation cyanobacterial biomass....

The work is devoted to the study of influence cerium in form salt and nanoparticles on culture gramnegative toxic freshwater cyanobacteria Microcystis aeruginosa (Kützing) Kützing. M. a typical representative algae flora temperate latitudes, capable producing neuro- hepatotoxins (microcystin cyanopeptolin). It should be noted that species promising producer organic raw materials for various needs: energy biofertilizers, as well source nutrients biologically active substances. effect...

The work is devoted to the development of model a laboratory photobioreactor for cultivation green algae Desmodesmus armatus (Chod.) Hegew. type cylindrical tubular bioreactor with internal LED spectrum illumination was chosen as basis creating model. frame made fiberboard and treated waterproof acrylic varnish. finished structure has following dimensions: overall height reactor - 393 mm., diameter object 162 width 158 mm. cost UAH 843. developed allows receive about 3 l suspension culture...