| Each brood was kept together in its own aquarium, and once the fry began feeding exogenously, they were fed frozen and fresh daphnia ad libitum. |
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| A large part of their diet consists of many winged insects, a large assortment of aquatic insects, and some zooplankton such as daphnia. |
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| In addition to fish, other aquatic creatures such as clams and daphnia are used as indicators of chemical changes. |
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| Fish are only used for testing at the lowest level of concentration where toxic effects are observed in algae and daphnia. |
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| Up to now, fish have equally shared the test burden with algae and daphnia combined. |
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| They are not fighting for breath as some people believe, but are instead feeding on the dense clouds of daphnia that gather just below the surface. |
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| Small fish begin by feeding upon zooplankton, mainly cladocera, such as daphnia, before moving onto bloodworm and larger invertebrates as they grow. |
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| When they reach a length of 12 mm, chub begin to feed more on small invertebrates, particularly chironomid larvae and tiny crustaceans, such as daphnia. |
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| The fish are still feeding heavily on the prolific green daphnia. |
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| Several were highly toxic to single-celled algae and hydra, and moderately toxic to daphnia and other higher organisms. |
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| The base set for testing the toxicity of substances towards aquatic organisms consists of acute tests with fish, daphnia and algae. |
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| This should include relevant available data on aquatic toxicity, both acute and chronic for fish, daphnia, algae and other aquatic plant. |
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| In a school lab, the students bred small crustaceans called daphnia that can naturally remove toxic algae blooms that turn the water green. |
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| Fish have been preoccupied feeding on big columns of daphnia as well as the brown beetles and green weevils which have blown onto the surface. |
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| Daphnia are close relatives of the freshwater shrimp, and the brine shrimp. |
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| Embryos are brooded in the mother's carapace and hatch out as miniature Daphnia, rather than as nauplii. |
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| Daphnia magna has a light-sensitive eye, meaning that the eye will track a moving light source. |
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| This field experiment was conducted in a deep, stratified lake that typically displays coexistence of multiple Daphnia species. |
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| Daphnia are keystone prey organisms in aquatic food webs and much studied due to their role as indicators of ecosystem health. |
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| While most species of Daphnia, including D. pulex, are herbivorous or detritivorous, a few are carnivorous and prey on other water fleas. |
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| Examples of animals in the P. spathula diet are copepods, cladocerans such Daphnia pulex, and ephemeropteran nymphs. |
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| Daphnia graze on algae, which regulates their presence in a lake. |
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| We analyzed 32 isolates representing 14 species of the subgenus Daphnia. |
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| Both immatures and adults were fed a diet including bee pollen, brewer's yeast, Daphnia, and insect eggs ad libitum during rearing. |
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| This type of ornamentation is often found in crustaceans including Daphnia, many species of ostracodes, and other Cambrian bivalved arthropods such as Isoxys. |
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| The exotic cladoceran, Daphnia lumholtzi Sars, possesses cyclomorphic features which are widely assumed to deter gape-limited predators. |
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| In 2005, more advanced organisms began to show up in the water, such as Crytophyte flagellate and species of zooplankton like Cyclops vernalis and Daphnia. |
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| A generalized standardization of arthropod toxicity data is more relevant and less prone to bias than standardizing on a single species, such as Daphnia magna. |
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| In general, Daphnia reproduce parthenogenetically in most time of the year. |
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| Optimization of differential display polymerase chain reaction as a bioindicator for the cladoceran Daphnia magna. |
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| The data for copepods, cladocerans, nauplii and Daphnia taxa were grouped by depth and separated by date. |
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| Research scientists studied Daphnia, a crustacean that lab studies have shown is strongly dependent on sufficient calcium concentrations in lakes to demonstrate the effects of this problem. |
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| This occurs within the branchiopod order Anomopoda, as in Daphnia, in most isopods and amphipods, and in some decapods, including freshwater crabs and crayfish and some deep-sea and Arctic groups. |
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| This study investigated how methylmercury effects Daphnia pulex in the presence of predatory stress chemical. |
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| An account of the two methods of reproduction in Daphnia, and of the structure of ephippium. |
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| Daphnia, also known as the water flea, is used widely as a model in ecotoxicology studies. |
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| Molecular characterization of clonal population structure and biogeography of arctic apomictic Daphnia from Greenland and Iceland. |
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| Aquatic invertebrates such as Daphnia touch these hairs and deform the door by lever action, releasing the vacuum. |
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| To date, Daphnia and fish, particularly zebrafish and fathead minnow, appear to be the most common model organisms for ecotoxicogenomics studies employing DNA microarrays. |
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