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Squalus blainville (Risso, 1827)

Longnose spurdog
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Squalus blainville   AquaMaps   Data sources: GBIF OBIS
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Image of Squalus blainville (Longnose spurdog)
Squalus blainville
Picture by The Fish Database of Taiwan


Croatia country information

Common names: Kostelj, Kostilj
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/hr.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

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).
  More on author: Risso.

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

marinhas; estuarina demersal; intervalo de profundidade 15 - 1500 m (Ref. 125614).   Subtropical; 11°C - 18°C (Ref. 54892); 50°N - 37°S, 20°W - 38°E (Ref. 54892)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Eastern Atlantic: Bay of Biscay to Mediterranean, Morocco, Senegal to Namibia (these records may include other species in addition to Squalus blainvillei). Although reported from the Canary Islands (e.g. Ref. 247), it is most likely based on misidentifications of Squalus megalops (Ref. 6808). Western Pacific: southern Japan and Taiwan. Nominal records of Squalus blainville or Squalus fernandinus from the western Atlantic (North Carolina, USA to northern Gulf of Mexico; Argentina), Indian Ocean (South Africa, Mozambique, Madagascar, Tanzania and India) and the Pacific (Australia, New Zealand, New Caledonia, Hawaii and northern Chile), as well as some records from the northwest Pacific and eastern Atlantic are based at least in part on Squalus mitsukurii and possibly other species. Whether Squalus blainville itself is as wide-ranging as reported for blainville-group dogfishes (including Squalus mitsukurii) remains to be determined.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 57.1, range 57 - 58 cm
Max length : 122 cm TL macho/indeterminado; (Ref. 86318); 117.5 cm TL (female); peso máx. publicado: 7.3 kg (Ref. 86318)

Biologia     Glossário (p.ex. epibenthic)

Found on the continental shelves and upper slopes. Depth range from 16-440 m (Ref. 0247), and from 300-780m in the eastern Ionian Sea (Ref. 56504). Forms schools. Off West Africa, water temperature and salinity where this species is often found ranges from 11-18°C and 36 ppt. (at 16 to 255 m depth), respectively. Feeds on bony fishes, like denticids, mackerel and percichthyids, as well as crabs, lobsters, and octopi. Ovoviviparous, with 3 to 4 young per litter. Utilized fresh, dried salted and smoked for human consumption.

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Distinct pairing with embrace (Ref. 205). Ovoviviparous, with 3 to 4 young per litter. Young born at about 23 cm (Ref. 247).

Referência principal Upload your references | Referências | Coordenador : Compagno, Leonard J.V. | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 130435)

  Dados insuficientes (DD) ; Date assessed: 31 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

Pescarias: espécies comerciais
FAO(pescarias: produção, perfil da espécie; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 10.3 - 15.6, mean 13.4 (based on 273 cells).
Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00271 - 0.00387), b=3.06 (3.01 - 3.11), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  4.0   ±0.4 se; based on diet studies.
Resiliência (Ref. 120179):  Muito baixo(a), tempo mínimo de duplicação da população maior que 14 anos (K=0.10-0.14; Fec=3).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (68 of 100).
Categoria de preço (Ref. 80766):   Medium.