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Ancistrocheirus lesueurii (Férussac & d'Orbigny, 1835)
Sharpear enope squid| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Ancistrocheirus lesueurii AquaMaps Data sources: GBIF OBIS |
Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS
Cephalopoda | Oegopsida | Ancistrocheiridae
Environment: milieu / climate zone / depth range / distribution range Ecology
Pelagic-oceanic; depth range 1 - 700 m (Ref. 110525). Tropical; 54°N - 42°S, 180°W - 180°E (Ref. 275)
Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions
Worldwide, from tropical to temperate waters.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 43.5 cm ML male/unsexed; (Ref. 122849); max. published weight: 0.00 g
An oceanic species that is lower epipelagic to mesopelagic and bathyal, and ranges in tropical and temperate waters of the 3 major oceans and the Mediterranean Sea. Undergoes diel vertical migration and consequently is able to regulate its bioluminescent counterillumination. As a nerito-oceanic species, occurs in association with seamounts and submarine ridges. Age and growth studies based on statolith analysis indicate a strong sexual dimorphism: males live about 1 year, females begin to mature at 1 year and spawn at about 1.5 years. Following ontogenetic descent into bathyal waters, at least to 680 m, growth rate decreases to lowest known values for squids. Relative fecundity is 200,000 to 800,000 ova, 2.6 to 1.91 mm diameter, of which 60 to 65% are spawned. Hatching occurs throughout the year; peaks November to March. Sexually mature males captured in southern African waters had nidamental glands in addition to the fully developed male reproductive system. Intersexual males were significantly larger than normal males. Preyed upon by swordfish, Xiphias gladius, lancetfish, tunas, blue shark, oceanic seabirds, Antarctic fulmar and odontocete cetaceans, e.g. sperm whales, pygmy and dwarf sperm whales, long-finned pilot whale (Ref. 97142).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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
References | Coordinator | Collaborators
Roper, C.F.E., M.J. Sweeney and C.E. Nauen. 1984. (Ref. 275)
IUCN Red List Status
(Ref. 130435: Version 2024-2)
Least Concern (LC) ; Date assessed: 28 April 2010
CITES status (Ref. 108899)
Not Evaluated
CMS (Ref. 116361)
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
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More information
Trophic Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Distribution
Human Related
Aquaculture profiles
Stamps, coins, misc.
Stamps, coins, misc.
Outreach
Taxonomy
References
Internet sources
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, Search) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 11.8 - 26.5, mean 18.3 (based on 459 cells).