Graneledone yamana
A deep-sea octopus with cartilaginous warts and two eye horns.
Last updated
Graneledone yamana is a deep-water octopus assigned to its genus by lacking an ink sac and crop, having cartilaginous warts on the body cavity, uniserial arm suckers, and a reduced radula.[1] Papillose skin, two horns above the eyes, small gills, and five to seven outer demibranch lamellae are among the identifying features of this species.[1] The southwest Atlantic Ocean, specifically off Uruguay, Argentina, and southern Brazil, is where this species is known to occur.[2]
Scientific classification
- OrderOctopoda
- FamilyMegaleledonidae
- GenusGraneledone
- SpeciesGraneledone yamana
Named by Guerrero-Kommritz, 2000
Close relatives
Other species of Graneledone with a Codexery entry.
- Graneledone boreopacifica Graneledone boreopacifica
Sources: Wikipedia taxobox: Graneledone yamana (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 342227 (CC BY 4.0)
Conservation status
Least Concern (LC)
- LC▲ this species
- NT
- VU
- EN
- CR
- EW
- EX
Source: IUCN Red List assessment · GBIF copy of the Red List category
Quick Facts
- Suckers on female arms
- 35–80
- Suckers on male arms
- 26–70
- Distribution
- southwest Atlantic Ocean off Uruguay, Argentina, and southern Brazil
Facts from the source article.
Key facts and history
Females have 35–80 suckers on the arms, while males have 26–70.[1] Within the southern oceans, Graneledone yamana represents the fifth species discovered in its genus.[2] Deep-water habitats near hydrothermal vents have yielded records of this genus.[2]
What the cited sources add
The 2003 redescription by Allcock, Collins, and Vecchione confirms the genus-level characters of absent ink sac and crop, cartilaginous warts, uniserial suckers, and reduced radula.[1] That same work details the papillose skin, supraocular horns, small gills, and demibranch lamella count as diagnostic.[1] It also provides the arm sucker counts for females and males.[1] The 2000 description by Kommritz establishes the geographic range off Uruguay, Argentina, and southern Brazil.[2]
That paper also notes G. yamana as the fifth southern-ocean Graneledone species.[2]
References
- Wikipedia, "Graneledone yamana" (CC BY-SA 4.0), which cites: Allcock A.L., Collins M.A., and Vecchione M. 2003. A redescription of Graneledone verrucosa (verril, 1881) (Octopoda:Octopodidae). J.Mollus. Stud. 69(2):135-143 (original not read by us) en.wikipedia.org
- Wikipedia, "Graneledone yamana" (CC BY-SA 4.0), which cites: Kommritz J. G. 2000. A new species of Graneledone (Cephalopoda:Octopodidae) from the Southweat Atlantic Ocean. J.Mollus.Stud.66(4):5 43-549. (original not read by us) en.wikipedia.org
Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Graneledone yamana (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.
More in Reef Cephalopods
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Graneledone yamana (CC BY-SA 4.0).
- Classification: the source article's taxobox; order, family and genus checked against WoRMS, the World Register of Marine Species (CC BY 4.0).
- Conservation status: IUCN Red List assessment.
- Word definitions: the Codexery glossary, each quoted from its Wikipedia article.
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