Clausocalanus Giesbrecht, 1888
Clausocalanus is one of the most widespread and abundant genus of planktonic calanoid copepods in the world oceans. It is distributed in both coastal and offshore waters, and over a broad latitudinal range in both hemispheres. The core of each species and population is generally located in the epipelagic zone, but the vertical distribution of most species can extend down to meso- and bathypelagic zones. Clausocalanus species are smaller or only slightly larger than 1 mm in total length. The genus was thoroughly revised by Frost and Fleminger (1968). A previous ICES Identification leaflet for Plankton (No. 38; G. P. Farran, revised by W. Vervoort, 1951) covered three of the 13 described species of Clausocalanus. This new leaflet updates the previous two works, and presents taxonomic and ecological characteristics, along with results from molecular studies, on all 13 Clausocalanus species revised by Frost and Fleminger (1968).
New edition of
Published under the auspices of the following ICES Steering Group or Committee