Copepoda


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Copepoda

[kō′pep·ə·də]
(invertebrate zoology)
An order of Crustacea commonly included in the Entomostraca; contains free-living, parasitic, and symbiotic forms.

Copepoda

 

an order of invertebrate animals of the class Crustacea. Copepoda are from 0.1 to 13 mm in size. A streamlined body with strongly developed extremities, which carry long falling antennules, is characteristic for Copepoda living mainly in the water, whereas Copepoda living near the bottom have thickened bodies and short extremities. Parasitic Copepoda have strongly adapted bodies in accordance with their modes of existence. Copepoda show various colorations. Specific (copepodan) stages of metamorphoses are characteristic of the Copepoda; they occur after the nauplius stage. Copepoda are distributed everywhere, in sea and fresh water. In the sea they constitute up to 90 percent of the plankton. Copepoda, particularly the large types of the calanides (Calanus finmarchicus, C. plumchrus, Eucalanus bungii, Pseudocalanus elongatus, and others) and the cyclopeds (Oithinia similis), have great practical significance, as feed for many commercial fish (herring, sardines, anchovies, and sprats) and for the young of almost all fish. In addition, Copepoda feed the baleen whale. A genus of Copepoda (the Cyclopes) are the intermediate hosts for certain worms (tapeworms and round worms) that are parasitical to humans and can cause serious illnesses, such as guinea worm. Certain maritime Copepoda are parasites on worms, ascidians, fish, and whales. The freshwater varieties are parasites on fish and often cause massive kills in the pond and lake fish industry.

REFERENCES

Zhizn’ presnykh vod SSSR, vol. 1. Edited by V. I. Zhadin. Moscow-Leningrad, 1940.
V. A. Dogel’. Zoologiia bespozvonochnykh, 5th ed. Moscow, 1959.

K. A. BRODSKII

References in periodicals archive ?
Los dos primeros ejes del ACC explicaron el 96.4% de la variacion (1 000 permutaciones; p = 0.8), en el eje X = 90.8% los rasgos que se correlacionaron directa y positivamente con el consumo de microcrustaceos (Cladocera y Copepoda) fueron la altura relativa de la boca (ARB), configuracion de la aleta pectoral (CAP), numero de branquiespinas (NBE) y longitud relativa de las branquiespinas (LRBE).
Susceptibility of endemic and non-indigenous fish to Lernaea cyprinacea (Copepoda: Lernaeidae): a case study from Duger Spring Creek (Burdur-Turkey).
Prediction of the protein components of a putative Calanus finmarchicus (Crustacea, Copepoda) circadian signaling system using a de novo assembled transcriptome.
Mogan Golu'nde arastirma suresince Rotifera'dan 14 familya 25 tur, Cladocera'dan 4 familya 7 tur, Copepoda'dan 1 familya 1 tur olmak uzere toplam 33 tur teshis edilmistir (Tablo 1).
and El-Mansy., On the occurrence of adult females of lernaea species (Crustacea: Copepoda) parasitic on goldfish Carassius auratus (Linnaeus) in some commercial aquaria in Egypt.
Indice de Importancia Relativa (Log IIR) y el Indice de Jerarquizacion (DJ) para el Jurel 1995 1996 OTO INV PRI VER OTO INV PRI CRUSTACEA: Crustacea -0.2 -0.28 Ostracoda Copepoda nd.
En 19 capitulos se explican los variados y diferentes grupos taxonomicos de Crustacea, principalmente marinos y de lagunas costeras, tratados en: "Decapoda", "Cladocera", "Copepoda", "Peracarida", "Cirripedia", "Oniscidea", "Remipedia", "Lophogastrida y Mysida", "Branchiopoda: Anostraca", "Branchiopoda: Cyclestherida, Laevicaudata, and Spinicaudata", "Branchiopoda: Notostraca", "Amphipoda", "Stomatopoda", "Euphausiacea", "Cumacea", "Leptostraca", "Tanaidacea", "Ostracoda" y "Brachiura".