Mexico country information

Common names: Gorgona guitarfish, Guitarra de Gorgona
Occurrence: native
Salinity: marine
Abundance: occasional (usually not seen) | Ref: Carrera-Fernández, M., F. Galván-Magaña and O. Escobar-Sánchez, 2012
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: First northernmost record with 2 individuals observed (1 photographed) from Chipehua Bay, Gulf of Tehuantepec. Fishermen in the Gulf group all species of guitarfish common in the area (e.g. Rhinobatos leucorhynchus and R. glaucostigma) which represented 48% of all rays captured (observations obtained from the sampling of sharks and rays between September 2004 and August 2006). Fishermen reported that Gorgona guitarfish is uncommon in the area, so it is possible that the frequency of occurrence of R. prahli may be low, with only occasional captures (Ref. 101827).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mx.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Carrera-Fernández, M., F. Galván-Magaña and O. Escobar-Sánchez, 2012
National Database:

Common names from other countries

Guitarra de Gorgona, Gorgoongitaarrog, 普氏犁头鳐, ... more

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology:

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

marin démersal; profondeur ? - 70 m (Ref. 26282). Tropical; 14°N - 6°S, 92°W - 82°W (Ref. 114953)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: from Mexico and from north-western Costa Rica to northern Peru.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 90.0 cm TL mâle / non sexé; (Ref. 101827); poids max. publié: 1.4 kg (Ref. 37888)

Description synthétique Morphologie | Morphométrie

Rostral cartilage distally enlarged; anterior nasal prolongations reaching medial margin of nostrils; posterior margin of spiracle with 2 folds, the medial one rudimentary; a line of about 77 prickles between nuchal region and first dorsal fin; 3 or 4 prickles on shoulders, few tubercles on snout and small prickles on anterior margin of orbits; body covered dorsally with about 80 white dots (3 to 5 mm in diameter) over a brown body; underbody white except snout with a black diamond shape blotch, extending backward laterally (Ref. 13259).

Living individuals reported to be in sandy and rocky environments near coral-reefs at 18-24 m depth of the Colombian coast (Ref. 101827). In contrast the type specimen was taken from a depth of 70 m (Ref. 26282). Ovoviviparous (Ref. 50449). Males mature at ca. 71 cm TL (Ref. 114953).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

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).

Référence principale Upload your references | Références | Coordinateur : McEachran, John | Collaborateurs

Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Vulnérable, voir Liste Rouge IUCN (VU) (A2d); Date assessed: 24 February 2020

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: sans intérêt

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00275 (0.00162 - 0.00469), b=3.10 (2.95 - 3.25), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.6 ±0.5 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): High vulnerability (56 of 100).

Pseudobatos prahli (Acero, P. & Franke, 1995)