Cirroctopus glacialisMichael Vecchione and Richard E. Young
- Shell V-shaped.
- Shell surface smooth.
- Basal shelf present.
Figure. Dorsal and ventral views of a shell of C. glacialis stained with methylene blue. Photograph by R. Young.
- 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).
Figure. Oral view of G. glacialis showing pigmentation pattern. Photograph from Vecchione, et al., 1998.
CommentsAdditional 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.
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.
National Marine Fisheries Service
National Museum of Natural History
Washington, D. C. 20560
Richard E. Young
Dept of Oceanography
University of Hawaii
Honolulu, Hawaii 96822
Page copyright © 2003 and Richard E. Young
- First online 13 May 2003
Citing this page:
Vecchione, Michael and Young, Richard E. 2003. Cirroctopus glacialis http://tolweb.org/Cirroctopus_glacialis/20109/2003.05.13 in The Tree of Life Web Project, http://tolweb.org/. Version 13 May 2003 (under construction).