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Daphnia magna is a typical water flea of the genus Daphnia. The females reach up to 5 mm in size, the males about 2 mm, thus they are among the largest species in the genus. [2] The body is protected by a translucent carapace made of chitin, a transparent polysaccharide. [3]
This chapter provides an overview of the biology of waterfleas of the genus Daphnia. It describes basic aspects of individual physiology and nutrition, including some remarks about immunity. It summarizes the typical life cycle and development of Daphnia.
Habitat. This species is found in freshwater and brackish (up to 8 ppt salinity) habitats including lakes, rivers, and temporary pools. Although they prefer temperatures between 18-22°C, they can tolerate a much broader range. ( Ebert, 2005; Haney, 2010; Vanoverbeke, et al., 2007) Habitat Regions.
Aug 8, 2022 · The most commonly studied species are Daphnia magna and D. pulex, for which a rapidly increasing number of genetic and genomic tools are available. Here, I review current research topics, where the Daphnia model system plays a critical role.
Daphnia is a genus of small planktonic crustaceans, 0.2–6.0 mm (0.01–0.24 in) in length. Daphnia are members of the order Anomopoda, and are one of the several small aquatic crustaceans commonly called water fleas because their saltatory swimming style resembles the movements of fleas.
Daphnia magna is a small freshwater crustacean that has long been used in laboratory studies as a model organism for ecotoxicology ( Guilhermino et al., 1996; Petrie et al., 2015) and in water quality monitoring efforts ( Storey et al., 2011 ).
Daphnia magna has a very limited and poorly known distribution in the Northeastern USA. D. magna does not appear to be widespread in the Northeast. It is occasionally found in small pools along the Atlantic Coast, because of its tolerance to relatively high salinity.
Aug 13, 2020 · The directly discharged DWTR without dewatering to natural water bodies, however, was reported to show signs of chronic toxicity to Daphnia magna ( D. magna ), a typical zooplankton in the aquatic environment.
Jan 21, 2019 · Water fleas (Daphnia magna) are important interactors in the aquatic food chain as they are not only a food source for larger freshwater organisms (macro-invertebrates, larvae of amphibians etc.), but additionally exert top down control on algae, thereby stabilizing the clear water phase.
Mar 18, 2014 · Within the large group of mainly freshwater dwelling branchiopod crustaceans, Daphnia magna belongs to the cladocerans, which are commonly known as ‘water fleas’. Daphnia is one of the oldest model organisms in ecotoxicology, ecology and evolutionary biology.
