Calanus

{{Short description|Genus of crustaceans}}

{{Other uses}}

{{one source|date=April 2025}}

{{Automatic taxobox

| image = Effect-of-Grazing-Mediated-Dimethyl-Sulfide-(DMS)-Production-on-the-Swimming-Behavior-of-the-marinedrugs-11-02486-s001.ogv

| image_caption = Calanus helgolandicus

| taxon = Calanus

| authority = Leach, 1819

| synonyms =

• {{nowrap|Cetochilus Roussel de Vauzeme, 1834}}
• Daphinia Rafinesque, 1817
• Diarthropus Brady, 1918

| synonyms_ref =  

}}

Calanus is a genus of marine copepod in the family Calanidae (Order Calanoida). The genus was split in 1974, with some species being placed in a new genus, Neocalanus. The following species are recognised:{{cite web |author=T. Chad Walter & Geoff Boxshall |year=2022 |title=Calanus |editor=T. Chad Walter & Geoff Boxshall |work=World Copepoda database |publisher=World Register of Marine Species |url=http://www.marinespecies.org/aphia.php?p=taxdetails&id=104152 |access-date=December 27, 2022}}

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• Calanus aculeatus Brady, 1918
• Calanus agulhensis De Decker, Kaczmaruk & Marska, 1991
• Calanus chilensis Brodsky, 1959
• Calanus dorsalis (Rafinesque, 1817)
• Calanus euxinus Hulsemann, 1991
• Calanus finmarchicus (Gunnerus, 1770)
• Calanus glacialis Jaschnov, 1955
• Calanus helgolandicus (Claus, 1863)
• Calanus hyperboreus Krøyer, 1838
• Calanus jashnovi Hulsemann, 1994
• Calanus marshallae Frost, 1974
• Calanus pacificus Brodsky, 1948
• Calanus propinquus Brady, 1883
• Calanus simillimus Giesbrecht, 1902
• Calanus sinicus Brodsky, 1962
• Calanus torticornis (Brady, 1918)

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