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 ?
MacRae, "Effect of inorganic mercury on the emergence and hatching of the brine shrimp Artemia franciscana" Marine Biology, vol.
The American brine shrimp as an exotic invasive species in the western Mediterranean.
Every fourth day, paralarvae and brine shrimp from one system were transferred to a clean and sanitized tank.
The cytotoxic activity of different plant parts or whole plants of 26 Bangladeshi traditionally used medicinal plants were investigated against brine shrimp (Artemia salina) in vitro.
C 91.50 % 91.41 % 85.00 % (standard) Table 3: Proximate Analysis Result of A.difformis tuber TEST % COMPOSITION Carbohydrate 63.64 Crude protein 1.31 Crude fibre 12.3 Ash 6.75 Fat 1.5 Moisture Content 14.5 Table 4: Results of Brine shrimp lethality test of Anchomanes difformis tuber extracts Conc.
The brine shrimp assay continues to be a popular assay to evaluate bioactivity of natural extracts, and has proved to be successful in many situations since its original development by Meyer et al.
On 7 May 2007 (Day 42), we began feeding larvae a mixture of brine shrimp and blackworms (Lumbriculus variegates).
In applying this framework to the brine shrimp project, it is clear that it would be classified under 'core features' as having a 'content' focus, because its purpose is to improve the subject-matter knowledge of the teachers by the provision of the science kits.
The aqueous extract of M.S (Fig.1.) showed the lowest toxicity 50 activity against brine shrimp with LC values at 98 [micro]l/ml.
Started in 1997 by Tim Troy, Brine Shrimp Direct harvests brine shrimp eggs from the Great Salt Lake, then grows the eggs into brine shrimp and sells the product locally and, thanks to the Internet, across the world.
Pearl Exploration's application gives short shrift to the bay's population of brine shrimp and ignores the natural pelican hatchery on a nearby island.