We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Impact of Microalgal‐Based Diets on Growth, Proximate, Fatty Acid, and Amino Acid Profiles in Daphnia magna
AI summary Read the abstract
This study evaluated six microalgal-based diets for Daphnia magna production, finding that a commercial ProteinPlus diet supported the highest survival while fresh Euglena gracilis best promoted growth, and that Schizochytrium-based diets produced the highest DHA accumulation, with implications for optimizing live feed nutrition in aquaculture.
Water flea ( Daphnia magna ) is an important live prey species for feeding larvae and juvenile fish and is also used as a feed ingredient in aquaculture. The growth performance and nutritional content of D. magna can be enhanced by diets. In this study, one freshwater microalgae Euglena gracilis (EG), one marine microalgae Pavlova lutheri (PL), and four commercial dried microalgal‐based diets (Algome [dried Schizochytrium sp.], Naturiga [dried Spirulina platensis ], ProteinPlus [PP] and AlgomeGrow [dried Chlorella sp.]) were evaluated for Daphnia production. Higher survival (68%) was supported by the PP diet, and total length was improved by using fresh microalgae EG. Algome (8.91%) and PP (8.77%) diets had resulted in higher crude lipid content, whereas the highest crude protein was obtained by the Naturiga diet (55.66%) in D. magna . D.magna fed Algome diet showed the highest docosahexaenoic acid (DHA; C22:6n‐3) accumulation, whereas eicosapentaenoic acid (EPA; C20:5n‐3) level was enhanced by PP and arachidonic acid (ARA) level was only supported by Naturiga diet. A strong correlation was observed between certain fatty acid groups (Oleic acid, Ʃ n‐3, and Ʃ n‐3 highly unsaturated fatty acids [HUFAs]) in the D. magna body and diets. In terms of essential amino acid contents of D. magna , the AlgomeGrow diet had the best performance at the end of the experiment.
More Papers Like This
Effect of Polystyrene Microplastics in Different Diet Combinations on Survival, Growth and Reproduction Rates of the Water Flea (Daphnia magna)
AI summary Read the abstract
Researchers exposed Daphnia magna water fleas to 6-micrometer fluorescent polystyrene microplastics across different diet combinations over 21 days, finding that animals fed only microplastics showed survival declines similar to starved controls and the least growth, while algae co-feeding partially mitigated but did not eliminate reproductive impacts.
Polystyrene microplastics decrease accumulation of essential fatty acids in common freshwater algae
AI summary Read the abstract
Scientists exposed the freshwater alga Chlorella sorokiniana to polystyrene microplastics and found significant reductions in essential omega-3 and omega-6 fatty acid content, suggesting microplastic contamination could reduce the nutritional quality of algae at the base of aquatic food webs.
Polystyrene microplastics exposure modulated the content and the profile of fatty acids in the Cladoceran Daphnia magna
AI summary Read the abstract
Researchers exposed Daphnia magna to polystyrene microplastics for 21 days and found that fatty acid content and composition were significantly altered. The changes suggest microplastics interfere with energy allocation in this freshwater crustacean, with effects varying by particle size and concentration.
Quantifying Polyethylene Microplastics Through Microscopy and Investigating Their Effects on Daphnia magna Growth Rate
AI summary Read the abstract
Researchers used a microscope to detect tiny polyethylene plastic beads in water fleas (Daphnia magna), finding plastic particles in most digested specimens tested. When juvenile Daphnia were fed algae with or without microplastics, growth rates and survival varied between groups, but results were inconclusive due to small sample sizes and high death rates in some groups.
Effects of nano/microplastics on the growth and reproduction of the microalgae, bacteria, fungi, and Daphnia magna in the microcosms
AI summary Read the abstract
Researchers tested the effects of 14 types of plastic particles and 6 fiber materials on microorganisms and water fleas in both single-species and microcosm experiments. They found that higher concentrations and smaller particle sizes of microplastics led to reduced growth rates in algae and other microorganisms. The study highlights the importance of testing realistic mixtures of plastic types rather than single materials when assessing the ecological risks of microplastic pollution.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.