Glaucostegus cemiculus

(Geoffroy Saint-Hilaire, 1817)


Blackchin guitarfish
Classification: Elasmobranchii Rhinopristiformes Glaucostegidae

Reference of the original description
Geoffroy St. Hilaire, E. (1817)
Poissons du Nil, de la Mer Rouge et de la Méditerranée, In Description de l'Egypte ou recueil des observations et des recherches qui ont été faites en Égypte pendant l'expedition de l'Armée français, publié par les ordres de sa Majesté–L'Empereur Napoléon le Grand., pl. 18–27.

Image of the original description

Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817) Plate 27 Fig. 3

Images of the original description (synonym)
Synonyms / new combinations and misspellings
Glaucostegus petiti, Rhinobatos cemiculus, Rhinobatos cemiculus rasus, Rhinobatos congolensis, Rhinobatos petiti, Rhinobatos rasus, Rhinobatos (Glaucostegus) cemiculus, Rhinobatos (Glaucostegus) petiti, Rhinobatus cemiculus, Rhinobatus congolensis, Rhinobatus petiti, Rhinobatus rasus, Rhinobatus (Rhinobatus) cemiculus, Rhinobatus (Rhinobatus) petiti

Types
Glaucostegus cemiculus

Rhinobatos cemiculus
Syntype: MNHN: 1966;
Rhinobatos petiti
Holotype: MNHN: 1929-0222;
Rhinobatus congolensis
Holotype: IRSNB: 31;
Rhinobatus rasus
Holotype: MCZ: 235-S


Description :


Citation: Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2024

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Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817), © www.isea.com.gr
Common names
spa Guitarra, spa Guitarra barba negra, spa Guitarra barbanegra, spa Guitarrón, fra \(T\) Poisson-guitare fouisseur, fra \(T\) Poisson-guitare fouisseux, fra \(T\) Raie guitare, fra \(T\) Raie requin, eng Blackchin guitarfish, ita Muso nero, ita Pesce chitarra, ita Pesce violino, por Viola-barba-negra

Short Description
Rostral ridges narrowly separated, nearly joining in front; anterior nasal lobe extending little if any, posterior nasal flap narrow; spiracle with two well-developed folds of about same size; thorns present around inner margin of orbits, between spiracles, on shoulders and along midline of disc and tail; upper surface brown, underside white, but usually a blackish blotch on snout mainly in juveniles (Ref. 6675).

Distribution
Eastern Atlantic: northern Portugal to Angola, including the Mediterranean Sea. Source: www.gbif.org

Human uses
fisheries: minor commercial; gamefish: yes; price category: low; price reliability: questionable: based on ex-vessel price for species in this genus

Biology
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 [733]. One or two litters per year, of 4-6 embryos (Ref. 6675). Feeds on fish and invertebrates [20216].

Size / Weight / Age
242 cm TL (male/unsexed; (Ref. 40637)); max. published weight: 49.9 kg (Ref. 40637)

Habitat
demersal; brackish; marine; depth range 9 - 100 m

Remarks
shark-references Species-ID=10800; CITES: (see: Protected Species for more details) Convention on International Trade in Endangered Speciesof Wild Fauna and Flora annex: II; Council Regulation 2017/160 annex: B

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
  • Mehracotyle insolita Neifar, Euzet & Ben Hassine, 2001 [18057] [31118]

Cestoda
Nematoda
  • Paranisakis squatinae Baylis, 1923 [21225]

Copepoda
  • Eudactylina rhinobati Raibaut & Essafi, 1979 [16609]
  • Perissopus dentatus Steenstrup & Lütken, 1861 [16609]


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