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 Écologie

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

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Introductions

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

Length at first maturity / Taille / Poids / Âge

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

Biologie     Glossaire (ex. 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 Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

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.

Référence principale Références | Coordinateur | Collaborateurs

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

Statut dans la liste rouge de l'IUCN (Ref. 130435)

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

statut CITES (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Utilisations par l'homme


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Outils

E-book | Guide de terrain

Plus d'informations

Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
Stocks
Écologie
Régime alimentaire
Éléments du régime alimentaire
Noms communs
Synonymes
Prédateurs
Reproduction
Maturité
Frai
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Morphologie
Larves
Abondance
Références
Mass conversion
Collaborateurs
Images

Sources Internet

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Arbre de Vie | Wikipedia (Go, chercher) | Zoological Record

Estimates based on models

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