Lithodes maja

Lithodes maja, the Norway king crab, is a species of king crab which occurs in colder North Atlantic waters off Europe and North America. It is found along the entire coast of Norway, including Svalbard, ranging south into the North Sea and Kattegat, the northern half of the British Isles (with a few records off southwest England), and around the Faroe Islands, Iceland, and off south-eastern Greenland.[1][2][3] In the West Atlantic, it ranges from the Davis Strait between Greenland and Canada south to The Carolinas in the United States.[3][4]

Lithodes maja
Lithodes maja caught in Norway
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Order:
Decapoda
Family:
Lithodidae
Genus:
Lithodes
Species:
L. maja
Binomial name
Lithodes maja
Synonyms

Lithodes arctica Latreille, 1806 [1]

The carapace is almost circular and may reach a width of up to 13–14 cm (5.1–5.5 in).[2] The whole body is brown or orange and is covered with large spikes. It lives on both soft and hard bottoms,[1][2] at depths of 10 to 1,000 m (30–3,280 ft).[3] Like most king crabs, females are asymmetrical, with the left side of the abdomen considerably larger than the right, although specimens with the reverse of this are occasionally found.[5]

The low rate of egg production by this species, in comparison to species fished in the North Pacific, limits its abundance, making it unsuitable for commercial exploitation.[6]

According to their physiological adaptations capabilities, the ideal larval developmental temperatures was thought to between 1°C-15°C, however, from experiment they discovered the optimal temperature is 6°C instead. In addition, according to Anger K on the temperature and larval development testing, the complete larval development takes 7 weeks at a constant temperature at 9°C.

References
  1. Cédric d'Udekem d'Acoz (2003). "Lithodes maja (Linnaeus, 1758)". Crustikon – crustacean photographic website. Tromsø Museum – University of Tromsø. Archived from the original on February 19, 2008. Retrieved August 16, 2007.
  2. K. Telnes. "Deepsea king crab". seawater.no. Retrieved May 29, 2019.
  3. Wilson, E. (2006). "Lithodes maja". MarLIN. Retrieved 29 May 2019.
  4. "Stone crab, Lithodes maja". Canada's Species. McGill University. Archived from the original on March 14, 2017. Retrieved August 16, 2007.
  5. S. D. Zaklan (2000). "A case of reversed asymmetry in Lithodes maja (Linnaeus, 1758) (Decapoda, Anomura, Lithodidae)". Crustaceana. 73 (8): 1019–1022. doi:10.1163/156854000504949.
  6. "Northern stone crab (Lithodes maja) exploratory fishing" (PDF). Government of Newfoundland and Labrador. 2000.

Anger, K. “Physiological and Biochemical Changes during Lecithotrophic Larval Development and Early Juvenile Growth in the Northern Stone Crab, Lithodes Maja (Decapoda: Anomura).” SpringerLink, Springer-Verlag, 13 Jan. 1996, link.springer.com/article/10.1007%2FBF00347453.

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