Artemia salina

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Artemia salinaScientific classificationKingdom:AnimaliaPhylum:ArthropodaSubphylum:CrustaceaClass:BranchiopodaOrder:AnostracaFamily:ArtemiidaeGenus:ArtemiaSpecies:A. salinaBinomial nameArtemia salina(Linnaeus, 1758) Artemia salina is a species of brine shrimp, primitive, aquatic crustacean that are a lot more closely related to Triops and cladocerans than to accurate shrimps. It is a really old species that did not change much for around 100 million years. Adult individuals have three eyes and 11 pairs of legs. Blood contains hemoglobin (identical as in humans). In nature, they live in salt water, however not in the sea but in numerous salt lakes. They are virtually by no means found in an open sea, most likely simply because of the lack of food and relative defenselessness. Even so Artemia have been observed in Elkhorn Slough that is connected to the sea.Artemia can live in water having significantly a lot more or a lot much less salt content than typical seawater. They tolerate salt amounts as high as 50 % that is near saturated remedy, and for many days can live in solutions quite various from the sea water as potassium permanganate or silver nitrate, although iodine that is a frequent addition to the human edible salt is harmful for them. The shrimp color depends on salt concentration (under high concentrations it becomes slightly red). For the short time shrimps also survive in a fresh water but die following about an hour. Artemia can grow about 15 mm in size. These shrimps feed mainly on green algae.Males differ from females by two big antenna on the head. Unusally, males have two reproduction organs. The females can produce eggs either in a usual way or via parthenogenesis. There are two sorts of eggs: the thin shell eggs that hatch instantly and the thick shell eggs. The thick shell eggs can stay in a dormant state, in cysts (that already consist of numerous cells), for a number of years until they are placed in water. Thick shell eggs are produced when the water is drying (the concentration of salt is raising). They require to dry out before they hatch (otherwise they would hatch right away and no eggs would be left when the watter dries up). If the female dies, the eggs develop further.Eggs hatch into nauplii that is about .five mm length. They have 1 single straightforward eye that only senses the presence and direction of light. Nauplii swim towards the light but adult people swim away from it. Later, the two a lot more capable eyes develop but the initial eye also stays, resulting 3 eye creatures. In contrast to the most of aquatic species, Artemia swims upside down.The resilience of these creatures make them ideal test samples in experiments. Artemia is one of the regular organisms for testing toxicity of various chemicals. In addition, the eggs survive for years in the shop until they are sold and utilised. Hence it is probable to acquire eggs and also “Artemia growing kits” for young children, containing eggs, salt, food and most essential tools. Youngsters have the possibility to observe the life cycle of this interesting organism. Aquaristic shops also sell frozen shrimps as fish food. Artemia occurs in vast numbers in Great Salt Lake where it is commercially crucial. Nevertheless, nowadays it is believed, that this lake is inhabited by one more brine shrimp species, i.e. Artemia franciscana. References^ Artemia salina (TSN 83691). Integrated Taxonomic Data System.^ a b SALT EFFECTS ON EGGS AND NAUPLII OF ARTEMIA SALINA L. on jpg.rupress.org^ a b Artemia salina – sea monkeys on Animal Diversity Internet^ a b Science &amp Technology : brine shrimp on Encyclopedia Britannica^ Ruebhart DR, Cock IE, Shaw GR (August 2008). “Brine shrimp bioassay: importance of right taxonomic identification of Artemia (Anostraca) species”. Environ. Toxicol. 23 (4): 55560. doi:10.1002/tox.20358. PMID 18214884. ^ Campos-Ramos, Rafael Maeda-Martinez, Alejandro M. Obregon-Barboza, Hortencia Murugan, Gopal Guerrero-Tortolero, Danitzia A. Monsalvo-Spencer, Pablo (2003). “Mixture of parthenogenetic and zygogenetic brine shrimp Artemia (Branchiopoda: Anostraca) in commercial cyst lots from Great Salt Lake, UT, USA”. Journal of Experimental Marine Biology and Ecology 296 (2): 243251.  Categories: Branchiopoda | Animals described in 1758

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