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An order of abundant, free-living, freshwater and marine crustaceans of basic importance in the aquatic food chain in both the marine and freshwater environments; some species are commonly called water fleas. Some are ectoparasites of both cold-blooded and warm-blooded aquatic vertebrates; the parasitic copepods of fish and whales are often highly modified for deep penetration of the skin or for adherence by suckers and hooks (for example, the fish lice, Argulus). Certain copepods (Cyclops, Diaptomus) are important as intermediate hosts of the tapeworm Diphyllobothrium latum and of the nematode Dracunculus medinensis.
[G. kōpē, an oar, + pous (pod-), a foot]
References in periodicals archive ?
In order to assess a natural size spectrum of copepods, we used data on copepod abundances from a zooplankton time series at Station 18, located over the continental shelf off Concepcion (36[degrees]30'S).
Male parasitic copepods die after copulation in the preadult stages, so those that are seen attached to fish are generally mature females with distinctive paired egg sacs at the posterior end [11,13].
Two parasitic copepods, Pseudomyicola spinosus and Modiolicola gracilis associated with edible mussels, Mytilus galloprovincialis and Mytilus californianus from Baja California NW Mexico.
Critically, however, the post-treatment non-nauplii zooplankton community at PR was devoid of cladocerans (less than one percent), being comprised solely of copepods.
Spatial and temporal changes in biomass, production and assemblage structure of mesozooplanktonic copepods in the tropical south-west Atlantic Ocean.
Vortsjarv in spring: 11 cladocerans (24%), 10 copepods (22%), and 24 rotifers (54%).
insignis worms from raccoons (Procyon lot or) in Georgia (USA) to infect colony-reared cyclopoid copepods (7).
Unlike the more commonplace, high-resolution, lateral compound eyes of other Crustacea, copepods use naupliar eyes, also referred to as "frontal" or "tri-partite" eyes, for spatial vision (Elofsson, 2006).