Octopus aegina   Gray,  1849 (Octopus)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Mollusca
Class: Cephalopoda
Order:Octopoda
Family:Octopodidae

Image copyrights: Guido T. Poppe & Philippe Poppe

Description
Color: Dull brown colour with a fine reticulate pattern on the dorsal surface of mantle, head, arms and web. The oral surface of arms is whitish. At the base of each sucker on all arms there is dark pigmentation.

Mantle rounded to elongately oval in shape and closely covered with small tubercles or fine papillae and fine reticulate pattern on the dorsal surface. Head is small with a narrow neck region. Eyes are prominent and have a single large cirrus near the base of each eye; fresh specimens with a narrow distinct white band across the base of head between eyes. Arms are long and stout, the dorsal pair distinctly shorter than others. The web between dorsal arms is very shallow; depth between other arms moderate; on the dorsal side of each arm a cluster of dark chromatophores present at the base of each sucker. The right third arm in males is long, slender and hectocotylized; ligula is short and about 5 to 8 per cent of the hectocotylized arm; groove very shallow and without ridges; calamus very small and distinct. In males abruptly enlarged suckers may or may not be present. Male genital organ consist of a characteristic long slender penis and a long diverticulum together forming a ' U ' shaped structure terminating in an additional secondary loop. Spermatophores are long and unarmed.


Synonym (s)

Common Name (s)
• Sandbird Octopus (English)
Economic Importance and Threats

Ecology

Biogeography


• INDIA

Literature Source(s)
  • Silas, EG; Sarvesan, R and Rao, KS (1985) Octopod resources Cephalopod bionomics, fisheries and resources of the exclusive economic zone of India Bulletin of Central Marine Research Institute CMFRI 37 137-139 Available at - http://eprints.cmfri.org.in/7028/1/Bulletin_No_37.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • poppeimages Available at - http://www.poppe-images.com/
  • Silas, EG; Sarvesan, R; Rao, KS; Nair, KP and Meiyappan, MM (1985) Identity of common species of cephalopods of India Cephalopod bionomics, fisheries and resources of the exclusive economic zone of India Bulletin of Central Marine Research Institute CMFRI 37 13-37 Available at - http://eprints.cmfri.org.in/7028/1/Bulletin_No_37.pdf

Page last updated on:2011-05-04

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