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Cirroctopus glacialis (Robson, 1930)

Michael Vecchione and Richard E. Young
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Containing group: Cirroctopodidae

Characteristics

  1. Shell
    1. Shell V-shaped.
    2. Shell surface smooth.
    3. Basal shelf present.
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      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).
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      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
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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.
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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.
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 1998
About This Page


National Museum of Natural History, Washington, D. C. , USA


University of Hawaii, Honolulu, HI, USA

Page: Tree of Life Cirroctopus glacialis (Robson, 1930). Authored by Michael Vecchione and Richard E. Young. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Vecchione, Michael and Richard E. Young. 2010. Cirroctopus glacialis (Robson, 1930). Version 27 June 2010 (under construction). http://tolweb.org/Cirroctopus_glacialis/20109/2010.06.27 in The Tree of Life Web Project, http://tolweb.org/

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