Elasmobranchii (tubarões e raias) (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 / Zona climática / intervalo de profundidade / distribution range
Ecologia
marinhas batidemersal; intervalo de profundidade 900 - 1000 m (Ref. 130122). Tropical
Western Indian Ocean: Réunion.
Tamanho / Peso / Idade
Maturidade: Lm ? range ? - ? cm
Max length : 73.0 cm TL macho/indeterminado; (Ref. 130122)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Vértebras: 112. This species is distinguished from its congeners by the following set of characters: snout short, preorbital length 8.2% of total length (TL), prenarial length in inner nostril-narial furrow space 0.86; body very high, with abdomen height 16.4% of TL, head height in trunk height 0.5; dorsal fin begin vertical above posterior lobes of pectoral fin; second dorsal fin at the middle between anal and caudal fins; first and second dorsal-fin spines are long, the first 5.8% of TL and second 5.3% of TL; flank denticles are tricuspid; vertebrae, monospondylous 37, precaudal 86, caudal 26, total 112; upper caudal-fin lobe broad; caudal fin distally with a narrow, light grey margin (Ref. 130122).
Cross section: angular.
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Fricke, R., P. Durville, G. Potin and T. Mulochau, 2023. Squalus longispinis, a new species of spurdog (Elasmobranchii: Squalidae) from La Réunion, southwestern Indian Ocean. Taxa (Journal of Taxonomy and Systematics) 2:1-21. (Ref. 130122)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-1)
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: de interesse potencial
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00165 - 0.00730), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 4.3 ±0.3 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (49 of 100).
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