Callistoctopus rapanui

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Callistoctopus rapanui
Octopus Pulpo rapanui Callistoctopus rapanui.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Octopodidae
Genus: Callistoctopus
Species:
C. rapanui
Binomial name
Callistoctopus rapanui
Voss, 1979

Callistoctopus rapanui, or the rapanui octopus, [2] is the only endemic octopus species in Rapa Nui (or Easter Island). [3] It was first described by Gilbert L. Voss in 1979 [4] as Octopus rapanui. [5]

Contents

Description

Callistoctopus rapanui is large and muscular, with a mantle length of up to 115 millimetres (4.5 in) and a total length of up to 550 millimetres (22 in). It has scattered rough tubercles across the body. [6] The arms are 3.5 to 4.5 times the length of the mantle, and have two rows of suckers each. C. rapanui is cream-gray with a darker purple hue on its dorsal surfaces. [7] Its most distinctive feature is a "straight, out-turned" rostrum. [8]

Distribution

Callistoctopus rapanui is subtropical [2] and only known in Rapa Nui. [7] It is benthic, [2] and found at depths of zero to four metres (0 to 13 ft). [7]

Use by humans

Callistoctopus rapanui are fished for food in Rapa Nui, and make up 0.6% of subsistence fishing catch. [9]

References

  1. ↑ Allcock, L.; Taite, M.; Allen, G. (2018). "Callistoctopus rapanui". IUCN Red List of Threatened Species . 2018: e.T163174A980433. doi: 10.2305/IUCN.UK.2018-2.RLTS.T163174A980433.en . Retrieved 12 September 2025.
  2. 1 2 3 "Callistoctopus rapanui (Voss, 1979)". SeaLifeBase . Retrieved 2023-03-27.
  3. ↑ Carrasco, Sergio A.; Meerhoff, Erika; Yannicelly, Beatriz; Ibanez, Christian M. (2019). "First Records and Descriptions of Early Life Stages of Cephalopods from Rapa Nui (Easter Island) and the Nearby Apolo Seamount" . Pacific Science . 73 (1): 163–175. doi:10.2984/73.1.8. S2CID   91197779.
  4. ↑ Voss, Gilbert L. (1979). "Octopus rapanui, New Species from Easter Island (Cephalopoda: Octopoda)". Proceedings of the Biological Society of Washington . 92 (2): 360–367 – via Biodiversity Heritage Library.
  5. ↑ Finn, Julian (2017-11-18). "Callistoctopus rapanui (Voss, 1979)". World Register of Marine Species . Retrieved 2023-03-27.
  6. ↑ Rehder, Harold A. (1980). The Marine Mollusks of Easter Island (Isla de Pascua) and Sala y Gomez (PDF). Smithsonian Contributions to Zoology 289. Washington, DC: Smithsonian Institution Press.
  7. 1 2 3 Norman, M. D.; Finn, J. K.; Hochberg, F. G. (2016). "Family Octopodidae". In Jereb, Patrizia; Roper, Clyde F. E.; Norman, Mark D.; Finn, Julian K. (eds.). Cephalopods of the World: An Annotated and Illustrated Catalogue of Cephalopod Species Known to Date (PDF). FAO Species Catalogue for Fishery Purposes No. 4, Vol. 3. Vol. 3: Octopods and Vampire Squids. Rome, Italy: Food and Agriculture Organization of the United Nations. ISBN   978-92-5-107989-8. ISSN   1020-8682.
  8. ↑ Voight, Janet R. (1998). "An Overview of Shallow-Water Octopus Biogeography". In Voss, Nancy A.; Vecchione, Michael; Toll, Ronald B.; Sweeney, Michael J. (eds.). Systematics and Biogeography of Cephalopods (PDF). Smithsonian Contributions to Zoology Number 586. Vol. II. Washington, DC: Smithsonian Institution Press.
  9. ↑ Zylich, Kyrstn; Harper, Sarah; Licandeo, Roberto; Vega, Rodrigo; Zeller, Dirk; Pauly, Daniel (2014). "Fishing in Easter Island, a recent history (1950-2010)". Latin American Journal of Aquatic Research. 42 (4): 845–856. Bibcode:2014LAJAR..42..845Z. doi: 10.3856/vol42-issue4-fulltext-11 . ISSN   0718-560X.
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