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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 ?
Populations of copepods, particularly cyclopoids, are capable of colonization and dispersal during post-glacial periods in North America (Lewis and Reid, 2007); these forms could have been stranded in these isolated aquatic systems and undergone speciation.
Seasonal and long-term variations in the body size of planktonic copepods in the northern Baltic Sea.
3] outdoor tanks in which copepods bloom within 24-48 hours.
Domination of early life stages of rotifers and copepods, especially those of copepod nauplii, within the plankton community resulted in the minimum individual weight values in early spring.
For the first half degree Celsius above what they were used to, the copepods tolerated the heat.
Scientists now have a tool to understand more thoroughly how copepods adapt, and may be better able to predict when and where population changes will occur for this planktonic crustacean on which many fisheries depend.
Copepod biodiversity as an indicator of changes in ocean and climate conditions of the northern California current ecosystem.
Copepods are ingested by the second intermediate hosts (fish, eels, frogs, birds, and reptiles), and larvae mature to the third stage.
Diet consisted mostly of harpacticoid, calanoid and cycloid copepods and other small crustaceans.
These copepods feed on certain types of algae, whose growth may drastically increase due to nutrient influx resulting from decaying grasshopper corpses, thus more algae means more copepods and more cholera bacteria.