Spirula spirula   (Linnaeus, 1758)

Ram's horn squid

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Spirula spirula

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

| Spirulida | Spirulidae

Environment: milieu / climate zone / depth range / distribution range Ecologia

Pelagico; distribuzione batimetrica 100 - 1750 m (Ref. 1695).  Tropical; ? - 10°C (Ref. 1695); 69°N - 32°S, 89°W - 160°W

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Introduzioni

Circumglobal in tropical and subtropical oceanic waters. Tropical to polar.

Length at first maturity / Size / Peso / Age

Maturity: Lm ?, range 30 - ? cm Max length : 4.5 cm ML maschio/sesso non determinato; (Ref. 1695)

Biologia     Glossario (es. epibenthic)

Minimum depth from Ref. 106682. Rarely exceeds 4.5 cm ML (Ref. 1695). Migrates from 550 to 1000 meters during the day, and 100 to 300 meters at night (Ref. 106682). Young is captured at depths 1,000 to 1,750 m, which suggests that females lay eggs on bottom of continental slopes (Ref. 1695). Dead shells washed up on the beaches often in large numbers (Ref. 88739).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Members of the class Cephalopoda are gonochoric. Male and female adults usually die shortly after spawning and brooding, respectively. Mating behavior: Males perform various displays to attract potential females for copulation. During copulation, male grasp the female and inserts the hectocotylus into the female's mantle cavity where fertilization usually occurs. Life cycle: Embryos hatch into planktonic stage and live for some time before they grow larger and take up a benthic existence as adults.

Main reference Bibliografia | Coordinatore | Collaboratori

Jereb, P. and C.F.E. Roper (eds.). 2005. (Ref. 1695)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 29 March 2009

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


| FishSource |

Strumenti

E-book | Giuda pratica

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Nomi Comuni
Sinonimi
Predatori
Riproduzione
Maturità
Deposizione
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Morfologia
Larve
Abbondanza
Bibliografia
Mass conversion
Collaboratori
Immagini

Fonti Internet

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, ricerca) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 4.7 - 11.6, mean 7.1 (based on 951 cells).
Price category (Ref. 80766): Unknown.