Pseudocarcharias kamoharai, Crocodile shark : fisheries

Pseudocarcharias kamoharai (Matsubara, 1936)

Crocodile shark
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Pseudocarcharias kamoharai   AquaMaps   Data sources: GBIF OBIS
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Pseudocarcharias kamoharai
Photo von Randall, J.E.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Lamniformes (Mackerel sharks) > Pseudocarchariidae (Crocodile sharks)
Etymology: Pseudocarcharias: pseudo-, from pseudes (Gr.), false, proposed as a subgenus of Carcharias (Odontaspididae) (See ETYFish)kamoharai: In honor of ichthyologist Toshiji Kamohara (1901-1972), Kochi University, who secured type at a fish market and presented it to Matsubara (See ETYFish).
Eponymy: Dr Toshiji Kamohara (1901–1972) was an ichthyologist who graduated from Tokyo Imperial University (1926). [...] (Ref. 128868), visit book page.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

seewasser pelagic-oceanic; ozeanodrom (Ref. 51243); tiefenbereich 0 - 590 m (Ref. 6871), usually 0 - 200 m (Ref. 54740). Subtropical; 40°N - 40°S, 180°W - 180°E

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Tropical and subtropical waters of all oceans.

Länge bei der ersten Reifung / Größe / Gewicht / Alter

Geschlechtsreife: Lm 91.6, range 89 - ? cm
Max length : 110 cm TL Männchen/unbestimmt; (Ref. 43278); 122.0 cm TL (female); common length : 100.0 cm TL Männchen/unbestimmt; (Ref. 13569); max. veröff. Gewicht: 5.9 kg (Ref. 130455)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Afterflossenstacheln: 0. A medium-sized spindle-shaped shark with very large eyes lacking a nictitating membrane, long gill slits extending onto dorsal surface of head, lanceolate teeth, weak keel and precaudal pits on caudal peduncle (Ref. 6871, 43278). Small and low dorsal fins, with second dorsal fin less than half the size of the first but larger than the anal fin (Ref. 6871). Pectoral fin broad and rounded (Ref. 6871). Light or dark grey above, paler below, fins white-edged, sometimes with small white spots on body and a white blotch between mouth and gill slits (Ref. 13569).
Body shape (shape guide): elongated.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

An oceanic species usually found offshore and far from land but sometimes occurring inshore (Ref. 9993, 43278, 58302). Epi- and mesopelagic, with occasional near-bottom occurrences (Ref. 43278, 58302). Although considered not dangerous to people, its powerful jaws, jaw muscles and teeth invite respect. Flesh not appreciated and therefore the catch is usually discarded (Ref. 247); utilized for its large, squalene-rich liver (Ref. 9993). Feeds on small pelagic bony fishes, squids and shrimps (Ref. 5578). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). With 4 young in a litter, born at 40 to 43 cm TL (Ref. 12288). Maximum length for female given in Romanove et.al 1994 (Ref. 44781). Common bycatch of tuna longline fisheries, and occasionally tuna gillnet fisheries (Ref.58048).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). With 4 young in a litter, born at 40-43 cm (Ref. 11228).

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Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  nicht bedroht (LC) ; Date assessed: 09 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: weniger kommerziell
FAO - Fischereien: landungen, Artbeschreibung; Publication: search | FishSource | Das Meer um uns herum

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Schätzungen auf der Grundlage von Modellen

Bevorzugte Temperatur (Ref. 123201): 16.3 - 28.2, mean 24.9 °C (based on 3402 cells).
Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00134 - 0.00895), b=3.11 (2.88 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  4.5   ±0.58 se; based on food items.
Generation time: 8.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Widerstandsfähigkeit (Ref. 120179):  sehr niedrig, Verdopplung der Population dauert mehr als 14 Jahre. (tm=5.1; K=0.14; tmax=13; Fec=4).
Anfälligkeit der Fischerei (Ref. 59153):  High to very high vulnerability (66 of 100). 🛈
Preiskategorie (Ref. 80766):   Unknown.