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Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817)

Blackchin guitarfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Glaucostegus cemiculus   AquaMaps   Data sources: GBIF OBIS
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  • Image of Glaucostegus cemiculus (Blackchin guitarfish)
    Glaucostegus cemiculus
    Picture by FishBase
  • Image of Glaucostegus cemiculus (Blackchin guitarfish)
    Glaucostegus cemiculus
    Juvenile picture by Wirtz, P.

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

Elasmobranchii (tubarões e raias) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Glaucostegidae (Giant guitarfishes)
Etymology:

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

marinhas; estuarina demersal; intervalo de profundidade 9 - 100 m. Subtropical; 42°N - 19°S, 19°W - 38°E (Ref. 114953)

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

Eastern Atlantic: northern Portugal to Angola, including the Mediterranean Sea.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 158.5, range 153 - 164 cm
Max length : 242 cm TL macho/indeterminado; (Ref. 40637); common length : 150 cm TL macho/indeterminado; (Ref. 3710); peso máx. publicado: 49.9 kg (Ref. 40637)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Vértebras: 68 - 73. This large to very large species has a plain beige to brownish wedge-shaped disc; long and rather broad triangular snout with a broadly rounded rostral cartilage at its tip and wide oblique nostrils with a narrow anterior opening; disc thickened centrally, length 1.2-1.3 times its width, anterior margins slightly undulate, often weakly concave before broadly rounded outer corner; snout moderately acute, its angle 59-63°, tip narrowly rounded not extended forward as a distinct lobe; large orbit, length 5-6 times in preorbital length, 1.5-2 in interorbital space; rostral ridges are narrowly separated posteriorly and almost joined anteriorly; 2 fleshy spiracular folds, with innermost fold smaller; upper jaw with 62-72 tooth rows; large and oblique nostrils, its length 1.4 in internasal width, ca 81 nasal lamellae, anterior nasal flaps are confined to anterior margin of nostril; rough skin covered entirely with small denticles; well-developed thorns, usually along edge of rostral cartilage and small patches around orbits and above spiracles; each shoulders with 1-3 thorns that persist in adults, a median row of enlarged thorns extending from nape to first dorsal fin, a few thorns between dorsal fin; long tail ca 1.5 times its disc length; dorsal fins are large and widely spaced, ca. 2.1 times base length of first dorsal fin, apices narrowly rounded; pectoral fin radials 68-73; 204-212 total vertebrae (Ref. 114953).

Biologia     Glossário (p.ex. epibenthic)

A coastal and benthic species found on sandy and muddy bottoms, intertidal zone to at least 80 m depth. Feeds mainly on benthic crustaceans and small fishes. Maximum length would probably reach up to 265 cm TL, common at about 200 cm TL. Males mature at 138-154 cm TL, females at 153-164 cm TL. In the Mediterranean Sea, males mature at smaller size, about 100-110 cm TL and females at about 110 cm TL. Size at birth about 34 cm TL. Produces litters up to 20 pups (more common 6-7 pups) (Ref. 114953). Ovoviviparous, one or two litters per year, of 4-6 embryos.

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). One or two litters per year, of 4-6 embryos (Ref. 6675).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Bauchot, M.-L., 1987. Raies et autres batoides. p. 845-886. In W. Fischer, M.L. Bauchot and M. Schneider (eds.) Fiches FAO d'identificationpour les besoins de la pêche. (rev. 1). Mèditerranée et mer Noire. Zone de pêche 37. Vol. II. Commission des Communautés Européennes and FAO, Rome. (Ref. 3261)

Status na Lista Vermelha da UICN (Ref. 130435)

  Criticamente em perigo (CR) (A2d); Date assessed: 03 December 2018

CITES


CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: pouco comercial; peixe esportivo: sim
FAO - Publication: search | FishSource | Sea Around Us

Mais informação

Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores
Ecology
Ecologia
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Length-weight rel.
Length-length rel.
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Fontes da internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Checar Observador de Peixes (FishWatcher) | CISTI | Catalog of Fishes: Gênero, Espécies | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genoma, nucleotídeo | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de dados nacionais | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Árvore da vida | Wikipedia: Ir para, procura | World Records Freshwater Fishing | Registro zoológico

Estimates based on models

Preferred temperature (Ref. 123201): 19.2 - 27.9, mean 25.4 °C (based on 94 cells).
Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00145 - 0.00950), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  4.0   ±0.70 se; based on food items.
Generation time: 4.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resiliência (Ref. 120179):  Muito baixo(a), tempo mínimo de duplicação da população maior que 14 anos (Fec=4).
Fishing Vulnerability (Ref. 59153):  High vulnerability (55 of 100).
Categoria de preço (Ref. 80766):   Low.
Nutrients (Ref. 124155):  Calcium = 17.6 [3.4, 77.4] mg/100g; Iron = 0.666 [0.174, 1.900] mg/100g; Protein = 20.1 [17.9, 22.1] %; Omega3 = 0.226 [0.098, 0.530] g/100g; Selenium = 30.9 [8.2, 84.3] μg/100g; VitaminA = 3.59 [1.33, 9.58] μg/100g; Zinc = 0.457 [0.227, 0.859] mg/100g (wet weight);