Ostracoda


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Ostracoda: Cladocera

Ostracoda

[ä′sträk·ə·də]
(invertebrate zoology)
A subclass of the class Crustacea containing small, bivalved aquatic forms; the body is unsegmented and there is no true abdominal region.

Ostracoda

 

a subclass of invertebrates of the class Crustacea. The body, which measures from 0.2 to 23 mm long, is enclosed in a calcareous bivalve carapace. The head is indistinct from the trunk, which bears three pairs of limbs and terminates in a biramous furca. Most ostracods have one simple eye, but some have compound eyes. There are about 2,000 species, distributed in seas and freshwaters. The majority of ostracods are benthic. They serve as food for some commercial fishes. Fossil ostracods, which have been found in Cambrian deposits, are of major significance in stratigraphy and are the most important guide fossils used in locating petroleum and gas deposits.

REFERENCES

Bronshtein, Z. S. Ostracodapresnykhvod. Moscow-Leningrad, 1947.
Zhizn’ zhivotnykh, vol. 2. Moscow, 1968.
Mentioned in ?
References in periodicals archive ?
A checklist of the known species of North American freshwater ostracoda. Am.
A key to the common seed shrimp (Crustacea: Ostracoda) of the playa lakes of the Llano Estacado region of northwestern Texas
On the Ostracoda from the cenotes of Yucatan and vicinity.
Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics
IVI CIPO LPAT LVEN Nematoda + + + + Oligochaeta + + + + Narapa bonettoi + + + - Hirudinea - + - + Thiaridae - + - + Corbiculidae + + - + Mytilidae - + - - Hydracarina + + + + Cladocera + + + + Ostracoda + + + + Calanoida + + + + Cyclopoida + + + + Entomobryidae + + + + Sminthuridae - - - + Polymitarcyidae + + + + Leptohyphidae + + - + Baetidae - + - + Gomphidae + + - + Coenagronidae - + - - Hydropsychidae + + - - Polycentropodidae + + - - Hydroptilidae - + - - Dytiscidae + - - + Hydrophilidae + - - - Elmidae + + - + Ceratopogonidae + + + + Chaoboridae - - + - Chironomidae + + + + Culicidae + - - - Tabela 1.
Hydrologic regime of the Ivinhema river (Mato Grosso do Sul, State) and its influence on zoobenthic assemblage/O regime hidrologico do rio Ivinhema (Estado do Mato Grosso do Sul) e sua influencia na assembleia zoobentonica
Notes on the ecology of Metacypris cordata (Ostracoda, Timiriaseviinae).
Changes in the Early Holocene lacustrine environment inferred from the subfossil ostracod record in the Varangu section, northern Estonia/ Vara-Holotseenis toimunud jarvelise basseini ja keskkonna muutused Pohja-Eestis ostrakoodide subfossiilileidude pohjal Varangu labiloikest
Taxa Febrero No insectos S1 S2 S3 Turbellaria - 3 2 Nemathelmintes - - - Oligochaeta 56 13 14 Hirudinea - - - Gastropoda - - - Hydracarina - 2 - Amphipoda - - - Ostracoda 105 - - Copepoda 205 - - Insectos Collembola Hypogasturidae - - 5 Poduridae - - 1 Plecoptera Gripopterygidae Claudioperla tigrina 4 4 23 Ephemeroptera Baetidae Andesiops peruvianus 929 27 134 Leptophlebiidae Meridialaris tintinnabula 10 30 72 Hemiptera Notonectidae - - 1 Coleoptera Elmidae 6 - - Dytiscidae - - - Trichoptera Limnephilidae Antartoecia nordenskioeldi 10 5 - Hydrobiosidae Cailloma rubemarini - 62 - Hydroptilidae Hydroptila sp.?
Estructura de macroinvertebrados acuaticos en un rio altoandino de la Cordillera Real, Bolivia: variacion anual y longitudinal en relacion a factores ambientales
californicus), bryozoan remains, Chironomidae, and Ostracoda was observed as total length of the fishes increased (Figures 2a, b).
Limnetic feeding in Eleginops maclovinus (Valenciennes, 1830) in the Valdivia River, Chile
Miscellaneous aquatic invertebrates (Ostracoda, Trichoptera and Odonata), aquatic and terrestrial Coleoptera, and Corixidae occurred in the diet primarily during January through June and collectively represented 0 to 54% (mean = 9%) of the diet across all samples.
Foods of the smalleye shiner and sharpnose shiner in the upper Brazos River, Texas
Genotypic diversity of asexual Ostracoda from a low Arctic site.
Evolutionary interactions between sexual and all-female taxa of Cyprinotus (Ostracoda: Cyprididae)
Ecological requirements of Ostracoda (Crustacea) in a heavily polluted shallow lake, Lake Yenicaga (Bolu, Turkey).
Correlation between Escherichia coli and limnological variables in water samples of the Lagoa da Maraponga, Fortaleza, Ceara State, Brazil/Correlacao entre Escherichia coli e variaveis limnologicas em amostras de agua da Lagoa da Maraponga, Fortaleza, Estado do Ceara, Brasil
* - - Pleuroxus aduncus (Jurine, 1820) * 0.333 - Pleuroxus caca Baird, 1843 * 0.333 0.333 Pleuroxus laevis Sars, 1861 * - - Pleuroxus trigonellus (Muller, 1785) * - - Pleuroxus truncatus (Muller, 1785) * - - Acroperus harpae (Baird, 1834) * - - Camptocercus similis Sars, 1901 * - - Chydorus globosus (Baird, 1843) * - - Daphnia peruviana Harding, 1955 * - - Ceriodaphnia dubia Richard, 1894 * 0.666 0.333 Simocephalus vetulus (Muller, 1776) * 0.333 - Ostracoda sp.
Diversidad del zooplancton en la Reserva Nacional de Junin, Peru
Pero considerando valores absolutos, no los promedios, la conductividad y el contenido de carbono organico si mostraron marcadas diferencias, pudiendo ser factores determinantes de las variaciones encontradas en la densidad de Ostracoda. En el sitio 2 la conductividad llego a 710[my]S*[cm.sup.-1] y el contenido de carbono organico en sedimentos a 2,6%.
Efectos de la contaminacion por metales pesados sobre la comunidad bentonica de la cuenca del Arroyo Cululu (rio Salado del Norte, Argentina)
Amphipoda 13.8 0.1 Amphipoda Ostracoda 6.1 0.0 Ostracoda Specific Prey taxa Lowest taxon volume Percent Osteichthyes "fish" unid.
Diet shifts of juvenile red snapper (Lutjanus campechanus) with changes in habitat and fish size

Encyclopedia browser ?
Full browser ?