Idiosepiidae
Idiosepiidae | |
---|---|
Idiosepius pygmaeus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Superorder: | Decapodiformes |
Order: | Idiosepida |
Superfamily: | Idiosepioidea Appellöf, 1898 |
Family: | Idiosepiidae Appellöf, 1898[1] |
Idiosepiidae, also known as the pygmy squids, is a
It is the only family in the
Description
Idiosepiidae are the smallest known squids: males can grow to about 15 mm (0.6 in) and females to about 21 mm (0.8 in) in mantle length. The mantle is elongate, obovate to cigar-shaped, with its posterior margin bluntly pointed at the distal tip. Their internal chitinous shell is vestigial, and the dorsal surface of the mantle has a unique oval adhesive organ, which secretes a sticky substance and is used to attach itself to seaweed or seagrass blades.[7] The head is prominent while the arms are short. In males, both ventral arms are differentiated, but they are also different from each other.[3] Females are generally larger and achieve sexual maturity later than males.[8]
Distribution and ecology
Idiosepiidae have an Indo-west Pacific distribution, from South Africa in the west to Japan and Russia in the east.
Genera
The following genera are recognised in the family Idiosepiidae:[2]
- Idiosepius Steenstrup, 1881
- Kodama Reid, Sato, Jolly & Strugnell, 2023[9]
- Xipholeptos Reid & Strugnell, 2018
References
- ^ Appellöf, A. (1898). "Cephalopoden von Ternate. 2. Untersuchungen über Idiosepius, Sepiadarium und verwandte Formen. Ein Beitrag zur Beleuchtung der Heklokotylisation und ihrer systematischen Bedeutung". Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft. 24 (4): 570–637.
- ^ a b Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Idiosepiidae Appellöf, 1898". MolluscaBase. World Register of Marine Species. Retrieved 23 April 2023.
- ^ PMID 29689867.
- ^ Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Idiosepida". MolluscaBase. World Register of Marine Species. Retrieved 23 April 2023.
- ^ Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Idiosepioidea Appellöf, 1898". MolluscaBase. World Register of Marine Species. Retrieved 23 April 2023.
- ISSN 1055-7903.
- ^ Mollusca: Aplacophora, Polyplacophora, Scaphopoda, Cephalopoda, Volum 17
- ^ a b c Kasugai, Takashi; Segawa, Susumu (2005). "LIFE CYCLE OF THE JAPANESE PYGMY SQUID IDIOSEPIUS PARADOXUS (CEPHALOPODA: IDIOSEPIIDAE) IN THE ZOSTERA BEDS OF THE TEMPERATE COAST OF CENTRAL HONSHU, JAPAN". Phuket Mar. Biol. Cent. Res. Bull. (66): 249–258.
- ^ Amanda Reid, Noriyosi Sato, Jeffrey Jolly & Jan Strugnell. 2023. Two New Pygmy Squids, Idiosepius kijimuna n. sp. and Kodama jujutsu n. gen., n. sp. (Cephalopoda: Idiosepiidae) from the Ryukyu Islands, Japan. Marine Biology. 170: 167. DOI: 10.1007/s00227-023-04305-1