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Elasmobranchii (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).

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

Marine; bathydemersal; depth range ? - 1000 m (Ref. 76802). Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Indian Ocean: Seychelles.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 61.5 cm TL male/unsexed; (Ref. 76802); 78.8 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

This species is characterized by having a low number of precaudal vertebrae (67-69); rounded free rear tip of pectoral; only 1 developed lobe at the anterior part of nostril flap; nostrils' inner corner at about midway between tip of snout and upper lip; uniformly grey body color with dorsal fins blackish (Ref. 76802).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

Baranes, A., 2003. Sharks from the Amirantes Islands, Seychelles, with a description of two new species of squaloids from the deep sea. Israel J. Zool. 49:33-65. (Ref. 76802)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Life cycle
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Egg(s)
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Distribution
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Anatomy
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Physiology
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Swimming type
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Visual pigment(s)
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Genetics
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00339 (0.00162 - 0.00707), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.3 ±0.3 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (52 of 100).

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Squalus lalannei Baranes, 2003