Octopoteuthidae
| Octopoteuthidae | |
|---|---|
| |
| Taningia danae | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Oegopsida |
| Superfamily: | Octopoteuthoidea |
| Family: | Octopoteuthidae Berry, 1912 [1] |
| Type genus | |
| Octopoteuthis Rüppell, 1844
| |
| Synonyms | |
|
Octopoteuthoidea S. S. Berry, 1912 | |
The Octopoteuthidae are a family of squid comprising two genera. The family is characterized by tentacles which cease to grow after the paralarval stage which leads to the adult having eight arms; thus, members of this family are commonly named as octopus squids.
Description
[edit]Octopoteuthidae is considered to be the sister family to the monotypic family Lepidoteuthidae (genus Lepidoteuthis).[2]
Octopus squids are characterized by a semi-gelatinous body, with very long, broad fins; the fins approach the length of the mantle in adults. These are oval in shape and muscular, with the two fins being fused towards the midline of the mantle. Their namesake feature is the lack of tentacles in adults; paralarvae and young juveniles possess them, but they do not develop after this stage, and so the adults only have eight arms like an octopus; these arms are armed with hooks. They do not have a hectocotylus; rather, they have a "penis" or terminal organ, which is "often greatly enlarged, elongate", extending well beyond the mantle's opening. Photophores are present on the arm-tips, and these are useful in distinguishing the genera.[3]
The family is comprised of two genera. A 2019 study recovered some additional species and separates Octopoteuthis into four species groups, though further research is needed to confirm this:[4]
- Genus Octopoteuthis (spindle-shaped photophore on all arm tips; smaller bodied)[5][3]
- Octopoteuthis danae
- Octopoteuthis deletron
- Octopoteuthis fenestra *
- Octopoteuthis indica
- Octopoteuthis laticauda *
- Octopoteuthis leviuncus *
- Octopoteuthis longiptera (nomen dubium)
- Octopoteuthis megaptera
- Octopoteuthis nielseni
- Octopoteuthis rugosa
- Octopoteuthis sicula, Ruppell's octopus squid
- Octopoteuthis sp. "IO" *
- Octopoteuthis sp. "Giant Pacific" *
- Octopoteuthis sp. "Giant Atlantic" *
- Genus Taningia (large, oval photophore on tip of arm-pair II; larger bodied)[6][3]
- Taningia danae, Dana octopus squid
- Taningia fimbria *
- Taningia persica (taxon inquirendum)
- Taningia rubea *
- Taningia sp. IV *
- Taningia sp. V *
Species recovered by the 2019 study is marked by an asterisk (*)
References
[edit]- ^ Julian Finn (2016). "Octopoteuthidae, Berry, 1912". World Register of Marine Species. Flanders Marine Institute. Retrieved 10 March 2018.
- ^ O’Shea, Steve; Jackson, G.; Bolstad, K. S. (2007). "The nomenclatural status, ontogeny and morphology of Pholidoteuthis massyae (Pfeffer, 1912) new comb (Cephalopoda: Pholidoteuthidae)". Rev Fish Biol Fisheries. 17 (2–3): 425–435. Bibcode:2007RFBF...17..425O. doi:10.1007/s11160-007-9047-9. Retrieved 30 March 2025.
- ^ a b c Roper, C.F.E.; Jereb, P. (2010). Family Octopoteuthidae. In P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and illustrated catalogue of species known to date. Volume 2. Myopsid and Oegopsid Squids. FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 2 (PDF) (4 ed.). Rome: Food and Agriculture Organization. pp. 262–268. Retrieved 5 April 2025.
- ^ Kelly, Jesse Tyler (2019). Systematics of the Octopoteuthidae Berry, 1912 (Cephalopoda: Oegopsida) (Thesis). Auckland University of Technology.
- ^ Julian Finn (2016). "Octopoteuthis Rüppell, 1844". World Register of Marine Species. Flanders Marine Institute. Retrieved 5 April 2025.
- ^ Julian Finn (2016). "Taningia Joubin, 1931". World Register of Marine Species. Flanders Marine Institute. Retrieved 5 April 2025.