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Pseudobatos productus (Ayres, 1854)

Shovelnose guitarfish
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Pseudobatos productus
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Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (tubarões e raias) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
  More on author: Ayres.

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

; marinhas; estuarina demersal; intervalo de profundidade 1 - 91 m (Ref. 48844), usually 1 - 13 m (Ref. 48844).   Tropical; 38°N - 18°N, 123°W - 106°W (Ref. 114953)

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

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

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm ?, range 99 - ? cm
Max length : 119 cm TL macho/indeterminado; (Ref. 48844); 170.0 cm TL (female); peso máx. publicado: 9.8 kg (Ref. 40637); peso máx. publicado: 9.8 kg; idade máx. registrada: 16 anos (Ref. 48844)

Descrição suscinta Morfologia | Morfometria

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.

Biologia     Glossário (p.ex. 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).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | 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). 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).

Referência principal Upload your references | Referências | Coordenador : McEachran, John | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 120744)

  Quase ameaçada (NT) ; Date assessed: 17 December 2014

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless (Ref. 2850)





Uso pelos humanos

Pescarias: espcies comerciais; peixe esportivo: sim
FAO(Publication : search) | FishSource |

Mais informação

Nomes comuns
Sinônimos
Metabolismo
Predadores
Ecotoxicologia
Reprodução
Maturidade
Desova
Agregação de desova
Fecundidade
Ovos
Desenvolvimento dos ovos
Idade/Tamanho
Crescimento
Peso-comprimento
Comprimento-comprimento
Frequências de comprimento
Morfometria
Morfologia
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Dinâmica larval
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Perfil para aquacultura
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Frequências alélicas
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Estimativas de algumas propriedades baseadas em modelos

Preferred temperature (Ref. 115969): 15.3 - 25.9, mean 22.4 (based on 149 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00163 - 0.00533), b=3.05 (2.89 - 3.21), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.6   ±0.3 se; Based on diet studies.
Resiliência (Ref. 69278):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tm=7; tmax=11; K=0.1; Fec = 6).
Vulnerabilidade (Ref. 59153):  Very high vulnerability (77 of 100) .
Categoria de preço (Ref. 80766):   Low.