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Euchaetidae

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Family of crustaceans

Euchaetidae
Euchaeta marina
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Copepoda
Order: Calanoida
Family: Euchaetidae
Giesbrecht, 1893
Genera

Euchaetidae is a family of marine copepods. The family is cosmopolitan and occurs in all the oceans, including the Southern and Arctic Oceans. Euchaetidae are medium to large-sized copepods.

Genera

There are two genera with in total 114 species:

Ecology

Euchaeta are mostly epipelagic whereas Paraeuchaeta are mostly bathypelagic. Where more than one species occurs, congeneric species (or life stages of a single species, as observed for Paraeuchaeta antarctica) may partition the water column, whereas species representing different genera that occur at similar depths differ in dietary preferences.

Paraeuchaeta can be important predators of fish larvae. Their mode of predation is "drift and wait". The dominant euchaetid in the Southern Ocean is Paraeuchaeta antarctica. It is a dominant predator there, and its fatty acid profile suggests that it mostly preys upon herbivorous calanid copepods. In the Weddell Sea, it contributes as much as 11–18% to total mesozooplankton biomass.

Life cycle

Paraeuchaeta antarctica has a one-year life-cycle around the Kerguelen Islands.

References

  1. ^ Walter TC, Boxshall G, eds. (2021). "Euchaetidae Giesbrecht, 1893". World of Copepods database. World Register of Marine Species. Retrieved 4 February 2021.
  2. ^ Park, Taisoo (1993). "Taxonomy and distribution of the marine calanoid copepod family Euchaetidae". Bulletin of the Scripps Institution of Oceanography. 29: 1–203.
  3. ^ Laakmann, Silke; Stumpp, Meike & Auel, Holger (2009). "Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front". Polar Biology. 32 (5): 679–689. doi:10.1007/s00300-008-0573-2.
  4. Ward, Peter & Wood, Andrew G. (1988). "The distribution of the Euchaetidae (Copepoda: Calanoida) around South Georgia". Polar Biology. 9 (1): 45–52. doi:10.1007/BF00441763.
Taxon identifiers
Euchaetidae
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