Cyclocaris guilelmi Chevreux 1899

• Main Authors: Horton, Tammy, Thurston, Michael H.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Cyclocaris; Cyclocaris guilelmi; Arctic Ocean; Baffin Bay; Baffin; Greenland; Greenland Sea; Norwegian Sea
• Online Access: https://doi.org/10.5281/zenodo.4915313; http://treatment.plazi.org/id/03DFB67EEF46FF94FF1EFF10F3C9A1CB

Cyclocaris guilelmi Chevreux, 1899 Cyclocaris Guilelmi Chevreux, 1899: 148–152, figs 1–5;— Sars, 1900: 20–25, pls 2–3;— Damas and Koefoed, 1907: p. 438;—Stephensen, 1917 (1913): 107–108;— Chevreux, 1935: 28–30, pl. 16, figs 3, 8, 24, 26. Cyclocaris guilelmi Stebbing, 1906: 31;— Brüggen, 1907: 215–216;— Stephensen, 1923: 52–54, chart 10;— Schellenberg, 1927: 664–665, fig. 59;— Stephensen, 1933: 8–9, map, fig. 3;— Stephensen, 1935: 43, figs 2–3;— Gurjanova, 1951: 181–182, fig. 53.— Barnard, 1958: 91.— Barnard, 1959: 116–117, figs 4–5.— Gurjanova, 1962: 87–88, fig. 18.— Barnard & Karaman, 1991: 479.— Bucklin et al ., 2010: 42, 46. Cyclocaris faroensis Norman, 1900: 197–198, pl. 6, figs 5–15.— Thurston & Allen, 1969: 358. 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. 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); ...