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Cirroctopus glacialis (Robson, 1930)

Michael Vecchione and Richard E. Young
Containing group: Cirroctopus

Characteristics

  1. Shell
    1. Shell V-shaped.
    2. Shell surface smooth.
    3. Basal shelf present.
    4.  image info

      Figure. Dorsal and ventral views of a shell of C. glacialis stained with methylene blue. Photograph by R. Young.

  2. Color
    1. The oral surface of the arms and web with distinctive appearance. "...circumoral ring of white patches, each of which lies astride an arm. Between this ring and the mouth, the web was bright reddish purple; peripherally and beyong the ring it was of an intense bluish purple. The pattern and coloration are extremely vivid..." (Robson, 1930).
    2.  image info

      Figure. Oral view of G. glacialis showing pigmentation pattern. Photograph from Vecchione, et al., 1998.

Comments

Additional features of the description of C. glacialis can be found here.

C. glacialis differs from C. hochbergi in having a smooth rather than a rugose shell, a thick rather than a thin mantle septum, a peculiar pattern of pigmentation on the oral face of the arms and web and a caecum that is much larger than the stomach. Unfortunately, differences in fixation and physiological state could account for some or all of these apparent species characteristics.

Distribution

Type locality: Schollaert Channel, Palmer Archipelago; 64°21'S, 62°58'W.

References

O’Shea, Steve. 1999. The Marine Fauna of New Zealand: Octopoda (Mollusca: Cephalopoda). NIWA Biodiversity Memoir 112: 280pp.

Robson, G. C. (1930). Cephalopoda, I. Octopoda. Discovery Report, 2:371-401.

Vecchione, M., U. Piatkowski and A. L. Allcock. 1998. Biology of the cirrate octopod Grimpoteuthis glacialis (Cephalopoda; Opisthoteuthidae) in the South Shetland Islands, Antarctica. S. Afr. J. Mar. Sci. 20: 421-428.

Title Illustrations
Scientific Name Cirroctopus glacialis
Reference Vecchione, M., U. Piatkowski and A. L. Allcock. 1998. Biology of the cirrate octopod Grimpoteuthis glacialis (Cephalopoda; Opisthoteuthidae) in the South Shetland Islands, Antarctica. S. Afr. J. Mar. Sci. 20: 421-428.
Copyright © 1998
Scientific Name Cirroctopus glacialis
Reference Vecchione, M., U. Piatkowski and A. L. Allcock. 1998. Biology of the cirrate octopod Grimpoteuthis glacialis (Cephalopoda; Opisthoteuthidae) in the South Shetland Islands, Antarctica. S. Afr. J. Mar. Sci. 20: 421-428.
Copyright © 1998
About This Page



National Marine Fisheries Service
Systematics Laboratory
National Museum of Natural History
Washington, D. C. 20560
USA

Richard E. Young

Dept of Oceanography
University of Hawaii
Honolulu, Hawaii 96822
USA

Citing this page:

Vecchione, Michael and Young, Richard E. 2003. Cirroctopus glacialis (Robson, 1930). Version 13 May 2003 (under construction). http://tolweb.org/Cirroctopus_glacialis/20109/2003.05.13 in The Tree of Life Web Project, http://tolweb.org/

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