Cyclocaris guilelmi Chevreux 1899
- Dataset
- A revision of the bathyal and abyssal necrophage genus Cyclocaris Stebbing, 1888 (Crustacea: Amphipoda: Cyclocaridae) with the addition of two new species from the Atlantic Ocean
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Amphipoda
- family
- Lysianassidae
- genus
- Cyclocaris
- species
- Cyclocaris guilelmi
discussion
Remarks. This species differs from all others in the genus by the permanent yellow-brown ocular pigment covering the whole surface of the head. The absence of eyelobes separates it from C. lowryi and C. franki. The comparison is based on Barnard (1959), the best available account of the species. C. guilelmi is a well known Arctic species. It occurs widely at mesopelagic and bathypelagic depths, mostly at 500 - 2000 + m (Stephensen, 1923, Østvedt, 1955, Birstein & Vinogradov, 1958, 1970), but has been recorded in the epipelagic zone (Sars, 1900, Stephensen, 1933). The species is attracted to sediment traps in large numbers (Seiler & Brandt, 1997, Kraft et al. 2013) and has been taken occasionally in baited traps, both benthic, at 1095 m (Chevreux, 1899, 1935), and midwater, at 1800 m (Barnard, 1959). The species appears to breed throughout the year (Kraft et al. 2013).
distribution
Distribution. Disjunct: Arctic Ocean, north-west Pacific Ocean. Norwegian Sea, Greenland Sea, south to the Faroe-Shetland Channel (Norman, 1900, Stephensen, 1923, Østvedt, 1955, Seiler & Brandt, 1997, Vinogradov, 1997, Kraft et al. 2013); Baffin Bay (Stephensen, 1933, Buchanan & Sekerak, 1982); Arctic Ocean, Nansen, Amundsen, Makarov and Canadian Basins (Sars, 1900, Barnard, 1959, Kosobokova et al., 2011); Pacific Ocean north of 39 ˚ N and west of 170 ˚ E (Birstein & Vinogradov, 1955, 1958, 1970).
Name
- Synonyms
- Cyclocaris faroensis Norman 1900
- Homonyms
- Cyclocaris guilelmi Chevreux 1899