Anostraca


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Anostraca

[ə′näs·trə·kə]
(invertebrate zoology)
An order of shrimplike crustaceans generally referred to the subclass Branchiopoda.

Anostraca

 

an order of invertebrates of the subclass Branchiopoda. The body measures from 5 mm to 3 cm long, sometimes reaching 10 cm. The body is elongated and semi-transparent, often with an orange tint. There are approximately 180 species, 40 of which are found in the USSR. They live in pools of water formed by melting snow in the spring; some species inhabit larger, more permanent bodies of fresh and salt water. The Anostraca swim on their backs. The eggs have a thick shell, which permits them to resist drought or freezing and to maintain vitality for several years. The Anostraca develop through metamorphosis; some species reproduce parthenogenetically.

REFERENCES

Zhizn’ presnykh vod SSSR, vol. 1. Edited by V. I. Zhadin. Moscow-Leningrad, 1940.
Zhizn zhivotnykh, vol. 2. Edited by L. A. Zenkevich. Moscow, 1968.
References in periodicals archive ?
After the first subsequent rains, the invertebrate fauna in these particular pans consisted of many "typical" temporary pan invertebrates, including various large branchiopods like: Anostraca (Fairy shrimp), Conchostraca (Clam shrimp), and Notostraca (Tadpole shrimp).
The macro-invertebrates considered most characteristic of the episodic freshwaters of hot deserts are branchiopod crustaceans, or the gill-footed shrimps (Notostraca, the tadpole shrimps; Conchostraca, the clam shrimps; Anostraca, the fairy shrimps).
1991) reported what they believed to be the uncommon co-occurrence of three Eubranchiopod orders (Notostraca, Anostraca and Conchostraca) in an ephemeral pond in SE Wyoming.
Northern North-Central Chile Chile (18[degrees]- (27[degrees]- Class Branchiopoda 27[degrees]S) 30[degrees]S) Order Anostraca Family Artemiidae Artemia franciscana Kellog (1906) 1 1 A.