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Spirula spirula   (Linnaeus, 1758)

ram's horn squid

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Spirula spirula   AquaMaps   Data sources: GBIF OBIS
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Image of Spirula spirula (ram
Picture by Grist, John and Maria

Classification
Cephalopoda | Spirulida | Spirulidae
Common names | Synonyms | CoL | ITIS | WoRMS

Main reference
Jereb, P. and C.F.E. Roper (eds.). 2005. (Ref. 1695)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age
Max length : 4.5 cm ML male/unsexed; (Ref. 1695)

Environment
Pelagic; depth range 300 - 1750 m (Ref. 1695)

Climate / Range
Tropical; ? - 10°C (Ref. 1695); 54°N - 32°S, 89°W - 160°W (Ref. 1695)

Distribution
Circumglobal in tropical and subtropical oceanic waters.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Biology     Glossary (e.g. epibenthic)

Rarely exceeds 4.5 cm ML (Ref. 1695). Inhabits depth 600 to 700 m during the day and found in depths less than 300 m at night. 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). 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 (Ref. 833).

IUCN Red List Status (Ref. 114614)

CITES status (Ref. 94142)

Not Evaluated

Threat to humans




Human uses

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More information

Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion

Internet sources
BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Price category (Ref. 80766)
Unknown