Thysanoessa raschii

Thysanoessa raschii
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
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

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]

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

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.
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.
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.

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[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.