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Elasmobranchii (Haie und Rochen) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436); lobularis: Name from Latin word 'lobus', referring to its diagnostic broad and lobe-like dorsal and pectoral fins..

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

seewasser benthopelagisch. Subtropical

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Southwest Atlantic: from southern Brazil to Uruguay, Patagonia in Argentina where it seems to be more common.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 64.0 cm TL Männchen/unbestimmt; (Ref. 109601); 72.5 cm TL (female)

Kurzbeschreibung Morphologie | Morphometrie

This species is distinguished from its congeners by the following characters: dorsal fins markedly broad and lobe-like and with a short clasper groove, not reaching the rhipidion; differs from S. mitsukurii by having a slender body (vs. highly robust), pectoral-fin posterior margin is concave (vs. straight); interorbital space narrower, 8.8%, 6.8%-8.5% TL (vs. 9.3%, 9.1%-9.8% TL); inner clasper length 1.4 times pelvic-fin inner margin length (vs. 0.7-1.1 times); differs from species of the Squalus megalops group by the having a snout relatively long (vs. short), pectoral fins markedly broad (vs. often very narrow), pectoral free rear tips rounded and lobe-like (vs. often triangular); dermal denticles tricuspidate (vs. lanceolate); further differs from all congeners by having a much larger pectoral-inner margin length (10.5%, 9.2%-11.0% TL), except from S. acanthias (Ref. 109601).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Viana, S.T.d.F., M.R. De Carvalho and U.L. Gomes, 2016. Taxonomy and morphology of species of the genus Squalus Linnaeus, 1758 from the Southwestern Atlantic Ocean (Chondrichthyes: Squaliformes: Squalidae). Zootaxa 4133(1):1-89. (Ref. 109601)

IUCN Rote Liste Status (Ref. 126983)

Daten mangelhaft (DD) ; Date assessed: 09 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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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=0.00933 (0.00355 - 0.02452), b=3.02 (2.79 - 3.25), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).

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

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (49 of 100).

Squalus lobularis Viana, Carvalho & Gomes, 2016