Pseudobatos productus, Shovelnose guitarfish : fisheries, gamefish

Pseudobatos productus (Ayres, 1854)

Shovelnose 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.
Pseudobatos productus   AquaMaps   Data sources: GBIF OBIS
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Image of Pseudobatos productus (Shovelnose guitarfish)
Pseudobatos productus
Photo von Murch, A.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
More on author: Ayres.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

seewasser; brackwasser demersal; tiefenbereich 1 - 91 m (Ref. 48844), usually 1 - 13 m (Ref. 48844). Tropical; 38°N - 18°N, 123°W - 106°W (Ref. 114953)

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Eastern Pacific: endemic to the eastern Pacific from San Francisco, USA to the Gulf of California, and possibly to Mazatlan, Mexico (Ref. 48844).

Länge bei der ersten Reifung / Größe / Gewicht / Alter

Geschlechtsreife: Lm ?, range 57 - ? cm
Max length : 119 cm TL Männchen/unbestimmt; (Ref. 48844); 170.0 cm TL (female); max. veröff. Gewicht: 9.8 kg (Ref. 40637); max. veröff. Gewicht: 9.8 kg; max. veröff. Alter: 16 Jahre (Ref. 48844)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Broad disc is greater in length than width; a relatively smooth dorsal surface except for a single row of thorns around the eyes and extending along the back and tail; a long, pointed snout with a rounded tip; small, rounded, pebble-like teeth; a first dorsal fin that originates closer to the pelvic fin base than to the caudal fin origin; a thick tail and a moderately large caudal fin without a distinct lower lobe. Tooth count: 102-112/98-117. Spiral valve count: 8-10.
Body shape (shape guide): elongated.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Found on sand or mud bottoms of bays, seagrass beds, estuaries, and near rocky reefs. Nomadic and gregarious. Found singly or in aggregations (Ref. 12951). Burrows in sand during the day, feeds on crabs, worms, clams and small fishes at night (Ref. 12951). Ovoviviparous, with 6 to 28 pups in a litter (Ref. 48844). Females mature by 7 years at 87-99 cm TL; males reaches 91-110 cm TL; birth size at 20-24 cm TL (Ref. 114953). Etymology: The genus comes from the Greek word rhine, meaning shark, and the Latin word batis, meaning ray, in reference to its body form being intermediate between that of a shark and a ray. The species name comes Latin, meaning produced, in reference to its pointed snout (Ref. 48844).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

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). Adults of both sexes congregate during the breeding season in shallow bays and estuaries and likewise leave when the pupping season is over after mating (Ref. 48844). Gestation lasts for about 12 months (Ref. 48844).

Hauptreferenz Laden Sie Ihre Referenzen hoch | Referenzen | Koordinator : McEachran, John | Partner

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  Gefährdung zunehmend (NT) ; Date assessed: 17 December 2014

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless (Ref. 2850)





Nutzung durch Menschen

Fischereien: kommerziell; Sportfisch: ja
FAO - Publication: search | FishSource |

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Schätzungen auf der Grundlage von Modellen

Bevorzugte Temperatur (Ref. 123201): 15.3 - 25.9, mean 22.4 °C (based on 149 cells).
Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00209 (0.00136 - 0.00320), b=3.10 (2.97 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  3.6   ±0.3 se; based on diet studies.
Generation time: 11.0 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (tm=7; tmax=11; K=0.1; Fec = 6).
Anfälligkeit der Fischerei (Ref. 59153):  High vulnerability (65 of 100). 🛈
Preiskategorie (Ref. 80766):   Low.
Nährstoffe (Ref. 124155):  Calcium = 32.6 [8.1, 140.3] mg/100g; Iron = 0.666 [0.163, 1.807] mg/100g; Protein = 18.8 [16.7, 20.7] %; Omega3 = 0.146 [0.065, 0.333] g/100g; Selenium = 50.9 [14.7, 138.9] μg/100g; VitaminA = 12.1 [5.5, 26.8] μg/100g; Zinc = 1.03 [0.51, 1.86] mg/100g (wet weight);