Berryteuthis magister, Schoolmaster gonate squid : fisheries
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Berryteuthis magister   (Berry, 1913)

Schoolmaster gonate squid

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Berryteuthis magister  AquaMaps  Data sources: GBIF OBIS
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drawing shows typical species in Gonatidae.

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

Cephalopoda | Oegopsida | Gonatidae

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

Bathypelagic; depth range 0 - 1500 m (Ref. 275).  Tropical; 66°N - 30°N, 127°E - 94°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

North Pacific. Tropical to polar climates.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 28.0 cm ML male/unsexed; (Ref. 104302); max. reported age: 4 years (Ref. 104304)

Biology     Glossary (e.g. epibenthic)

Maximum depth from Ref. 104112. Occurs in the outer edge of continental shelf and slope. Juveniles are mostly in midwater at mesopelagic depths; adults mainly occur in bottom layers in the upper bathyal zone. Exhibits diel vertical migration (Ref. 104112).

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 FAO Species Catalogue. Vol. 3. Cephalopods of the world. An annotated and illustrated catalogue of species of interest to fisheries. FAO Fish. Synop. 125(3):277p. Rome: FAO. (Ref. 275)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Least Concern (LC) ; Date assessed: 03 May 2010

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
FAO - Fisheries: landings | FishSource |

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More information

Trophic Ecology
Ecology
Population dynamics
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Taxonomy
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Fisheries: ; 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): 0.6 - 7.2, mean 4.3 (based on 237 cells).
Fishing Vulnerability (Ref. 71543): Low vulnerability (21 of 100).
Price category (Ref. 80766): Medium.