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Thysanoessa raschii

Summary

Thysanoessa raschii, sometimes known as Arctic krill, is one of the most common euphausiid species of the subarctic and Arctic seas. They may reach 20–25 millimetres (0.8–1.0 in) long, and are sexually mature above 14 mm (0.6 in).[1]

Thysanoessa raschii
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Euphausiacea
Family: Euphausiidae
Genus: Thysanoessa
Species:
T. raschii
Binomial name
Thysanoessa raschii
M. Sars, 1864
Synonyms

Rhoda jardineana Sim, 1872
Euphausia raschii G. O. Sars, 1883
Boreophausia raschii Norman, 1886
Rhoda raschii Stebbing, 1893

T. raschii is a major prey item of several taxa, planktivorous fishes and marine mammals. It is also a common prey item of seabirds, including shearwaters.[2]

This species goes through a number of stages in its development. Roderick Macdonald defined the characteristics of fourteen stages, or 'furcilia'.[3]

References edit

  1. ^ M. J. de Kluijver & S. S. Ingalsuo. "Thysanoessa raschii". Macrobenthos of the North Sea. Universiteit van Amsterdam. Archived from the original on July 17, 2011. Retrieved December 7, 2006.
  2. ^ J. R. Lovvorn; C. L. Baduini & G. L. Hunt (2001). "Modelling underwater visual and filter feeding by planktivorous shearwaters in unusual sea conditions". Ecology. 82 (8): 2342–2356. doi:10.1890/0012-9658(2001)082[2342:MUVAFF]2.0.CO;2. ISSN 0012-9658.
  3. ^ R. Macdonald (1928). "The life history of Thysanoessa raschii". Journal of the Marine Biological Association of the United Kingdom. 15 (1): 57–80. doi:10.1017/S0025315400055533. Archived from the original on 2007-03-11.