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Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Pseudotriakidae (False catsharks)
Etymology: Pseudotriakis: pseudo-, from pseudes (Gr.), false, i.e., although this genus may superficially resemble Triakis (Triakidae), such an appearance is false. (See ETYFish); microdon: micro-, from mikros (Gr.), small; odon (Gr.), tooth, referring to numerous small teeth (>200 rows in each jaw). (See ETYFish).

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

marien bathydemersaal; diepte 173 - 1890 m (Ref. 58302). Deep-water; 64°N - 48°S, 98°W - 153°W

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Western Atlantic: New York and New Jersey, USA. Reported from Cuba (Ref. 26340); including Brazil (Ref. 53443). Northeast Atlantic: Atlantic slope off Iceland, France, Portugal, Madeira, Azores, Senegal, and Cape Verde. Indian Ocean: Aldabra Island group and Western Australia (Ref. 13565). Pacific Ocean: Japan, Taiwan, New Zealand, and Hawaii (Ref. 13565).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 253.5, range 210 - 295 cm
Max length : 269 cm TL mannelijk / geslacht onbekend; (Ref. 244); 295.0 cm TL (female)

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Dorsale stekels (totaal) : 0; Anale stekels: 0. Lower lobe of caudal fin hardly developed, its upper edge not rippled and a subterminal notch present (Ref. 13565). Uniformly dark brownish-grey, darker on posterior edges of pelvic, dorsal, anal and caudal fins (Ref. 13565).

Found on the continental and insular slopes, occasionally wandering onto continental shelves (Ref. 13565). Inactive and sluggish (Ref. 13565). Probably eats bony fishes, elasmobranchs and invertebrates (Ref. 244). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother, uterine milk is consumed additionally (Ref. 50449). Pups number 2 to 4 in a litter (Ref. 244), size at birth between 70 (Ref. 244) and 140 cm TL (Ref. 13565). Caught very rarely by deepwater demersal longline fisheries in some areas. Utilized for its fins (limited value), meat and cartilage (Ref.58048).

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Exhibit ovoviparity (aplacental viviparity), embryos feed on yolk and ova, also consume uterine milk (Ref. 50449) with 2-4 young in a litter (Ref. 13565; Ref.58048). Size at birth between 70 and 85 cm (Ref. 26346 reports it at about 140 cm TL). Distinct pairing with embrace (Ref. 205).

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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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 13 May 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: visserij voor eigen gebruik

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Estimates based on models

Preferred temperature (Ref. 123201): 4.8 - 12.7, mean 8.2 °C (based on 793 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 1.0625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00047 (0.00023 - 0.00095), b=3.29 (3.10 - 3.48), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trofisch niveau (Ref. 69278): 4.3 ±0.5 se; based on diet studies.

Weerstandsvermogen (Ref. 120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (K=0.17; Fec=2).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Prijsklasse (Ref. 80766): Unknown.

Pseudotriakis microdon de Brito Capello, 1868