brine shrimp

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brine shrimp,

common name for a primitive crustaceancrustacean
, primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are marine, but there are many freshwater forms. The few groups that inhabit terrestrial areas have not been particularly successful in an evolutionary sense; most require
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 that seldom reaches more than 1-2 in. (1.3 cm) in length and is commonly used for fish food in aquariums. Brine shrimp, which are not closely related to true shrimp, can be found almost everywhere in the world in inland saltwaters, although they are completely absent from oceans. They can live in water having several times the salinity of seawater, but they can also tolerate water having only one tenth the marine salt concentration. Brine shrimp usually occur in huge numbers and can be seen in vast windblown lines in the Great Salt Lake. Their absence from the sea has been explained by their vulnerability to attack by predators and the absence of the latter in their inland saline habitat. Although brine shrimp are considered to be members of a single genus, Artemis, and possibly a single species, there are several varieties. Generally, they have stalked, compound eyes and tapered bodies with a trunk that bears 11 pairs of leaflike legs. Females have a brood pouch from which active young are liberated under favorable conditions. Otherwise eggs are laid parthenogenetically (unfertilized by sperm) or fertilized and can either hatch immediately or be dried and remain viable for many years. These eggs are remarkably resistant to adverse environmental conditions, which is why they can be hatched so easily in saltwater and used for fish food; adult brine shrimp are also used as food in aquariums and are generally sold frozen. Brine shrimp are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, subphylum Crustacea, class Branchiopoda, order Anostraca.
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References in periodicals archive ?
Brine shrimp lethality test allowed us to determine P chrysopeplus feather extract produces higher mortality in A.
The sample extract of Erythraea ramosissima showed potent antioxidant activities (98.1+-5.2%) inhibition of DPPH, Hydrogen peroxide scavenging activity was (95.1+-8.4%), total antioxidant activity was 92.1+-5.4 and ABTS scavenging activity of the extract was 94.1+-5.4 at 3000ug/ml.Qualitative analysis reveals the presence of saponins, tannins, anthraquinons, alkaloids, coumarins and flavonoids.I the cytotoxicity assay, at 3000ug/mlconcentrations maximum death of brine shrimp was reported.
Toxicity of the extracts was evaluated through brine shrimp lethality test using Artemia salina Leach as the test organism [8].
Brine shrimp lethality bioassaywas carried out at the Department Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile-Ife.
The biological activities such as antibacterial, antifungal, antitumor, DNA damage activities and brine shrimp toxicity were thoroughly evaluated.
This indicated that all isolates with mean 30.0 individual dead shrimp were highly toxic to the brine shrimps.
The shallow ponds inhabited by brine shrimps typically have a maximum depth between 1-15 m (Zuniga et al., 1999), and UVR penetrates to the bottom of the water column (Villafane et al., 2001).
Cytotoxic brine shrimp lethality test was carried out according to standard protocol with some modification as described by Khan et al., (2015) for the determination of cytotoxic activity.
Phytochemical screening was done to support the results of the following tests: toxicity test by calculating LC50 using brine shrimp lethality test; antioxidant screening using thin-layer chromatography; and purgative test by anthelmintic assay using Eudrilus eugeniae as test organisms.
Insecticidal screening using brine shrimps bioassays was carried out to provide important preliminary data to screen plant extracts for their anti-cancerous potential.
Brine shrimp lethality test using larvae of Artemia salina L.
Brine shrimp lethality assay have been used as a bench-top bioassay for the discovery and purification of bioactive natural products, and they are an excellent choice for preliminary assessment of toxicity of herbal drugs/ consumer products.