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(invertebrate zoology)
A suborder of the crustacean order Copepoda, including the larger and more abundant of the pelagic species.



a suborder of planktonic invertebrate animals of the order Copepoda. Some zoologists consider Calanoida an independent order.

Calanoida are from 0.5 to 14 mm in size. The head is fused with the first thoracic segment, forming the cephalothorax, on which there are a nauplius eye and five pairs of appendages (antennae I and II, mandibles, and two pairs of maxillae). The thorax bears maxillipeds and five or four pairs of swimming legs. Respiration is effected by the entire body surface. The female deposits eggs in the water or carries them in an egg sac until giving birth. Calanoida feed on phytoplankton (only a few are predators) and are themselves the principal food of fish fry, plankton-feeding fish (such as herring, anchovies, sardines, and Pacific saury) and whalebone whales. More than 2, 000 species are known, belonging to 200 genera united in 30 families. They are widely distributed in marine and fresh bodies of water and are very numerous. (In the surface waters of the ocean there are up to tens of thousands of individuals per cubic meter.) The majority of marine Calanoida are characterized by luminescence. A typical representative of Calanoida is Calanus finmar-chicus.


Zhizn’ zhivotnykh, vol. 2. Moscow, 1968. Pages 406-10.
Brodskii, K. A. Veslonogie rachki Calanoida DaVnevostochnykh morei SSSR i Poliarnogo basseina. Moscow-Leningrad, 1950.


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Seasonal and interannual variability of the calanoid copepod community structure in shelf waters of the Eastern Tropical Pacific.
affinis c-opsin 2 transcript, all of the identified pteropsins from calanoid species form a well-supported clade (Fig.
A Key to the British Freshwater Cyclopoid and Calanoid Copepods.
Age-0 goldeye primarily consumed calanoid copepods and cladocerans in the Peace-Athabasca Delta, Alberta, Canada (Donald and Kooyman, 1976).
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From 3 August until 9 August, calanoid copepodites continued to increase while the other three groups declined, causing a shift to calanoid copepods as the most abundant taxon by the end of the sampling period.
The marine fauna of New Zealand: pelagic calanoid Copepoda: Bathypontiidae, Arietellidae, Augaptilidae, Heterorhabdidae, Lucicutiidae, Metridinidae, Phyllopodidae, Centropagidae, Pseudodiaptomidae, Temoridae, Candaciidae, Pontellidae, Sulcanidae, Acartiidae, Tortanidae.
Colonisation processes range from r- to k-strategist species, initially with the dominance of small species (including rotifers, protozoans, small cladocerans and cyclopoid copepods), which tend to be replaced by large species, such as large cladocerans and calanoid copepods (Matsumura-Tundisi et al.
In addition to a single species of calanoid crustacean, at least 2 species of amphipod were identified.
The cladocerans were the most abundant organisms in all of the sampled zones, presenting a mean of 60%, followed by the calanoid with 29% and cyclopoid with 11%.