Grimpoteuthis bathynectes

Grimpoteuthis bathynectes is a deepwater species of so-called Dumbo octopus first described in 1990. So far only thirteen specimens have been recorded.[3]

Grimpoteuthis bathynectes
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Grimpoteuthidae
Genus: Grimpoteuthis
Species:
G. bathynectes
Binomial name
Grimpoteuthis bathynectes
Voss & Pearcy, 1990[2]

Description

Grimpoteuthis bathynectes in general form is distinguished from other Grimpoteuthis species by a suite of characteristics. Each of the dorsal arms have 47–58 suckers, with the suckers slightly larger and more globular in males (more tubular shaped in females). The pairs of cirri (small fingerlike projections between each sucker) start between the 3rd and 4th sucker, and at greatest length the cirri are roughly equal to the sucker diameter. The internal shell (fin support) is roughly 'U'-shaped, its ends being flattened with small spikes. The species also lacks a radula and posterior salivary gland (features found in some Grimpoteuthis), and has 7 to 9 gill lamellae on each gill. For coloration, the mantle and head is grayish, red-brown on posterior edges of fins, the inside of the arm webbing (oral surfaces) are dark purple to reddish brown.[3][4]

The diet and behavior of this Grimpoteuthis species has not been recorded, but is presumably similar to others of its genus.

Habitat

Grimpoteuthis bathynectes has only been collected from Tufts Abyssal Plain and Cascadia Abyssal Plain, northeastern Pacific Ocean. The species was collected at depths from 2816 to 3932 m.[4]

References
  1. Lyons, G.; Allcock, L. (2014). "Grimpoteuthis bathynectes". IUCN Red List of Threatened Species. 2014: e.T163299A994916. doi:10.2305/IUCN.UK.2014-3.RLTS.T163299A994916.en. Retrieved 20 November 2021.
  2. "WoRMS - World Register of Marine Species - Grimpoteuthis bathynectes Voss & Pearcy, 1990". www.marinespecies.org. Retrieved 2015-11-10.
  3. "Grimpoteuthis bathynectes". Tree of Life Web Project. Retrieved 26 March 2017.
  4. Voss, Gilbert; Pearcy, William (1990). "Deep-water octopods (Mollusca; Cephalopoda) of the northeastern Pacific". Proceedings of the California Academy of Sciences. 47 (3): 47–94.


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