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Rhinobatos irvinei Norman, 1931

Spineback 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.
Rhinobatos irvinei   AquaMaps   Data sources: GBIF OBIS
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Image of Rhinobatos irvinei (Spineback guitarfish)
No image available for this species;
drawing shows typical species in Rhinobatidae.


Namibia country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/wa.html
National Fisheries Authority: http://www.benefit.org.na/
Occurrences: Occurrences Point map
Main Ref: Stehmann, M., 1990
National Database:

Common names from other countries

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

Elasmobranchii (tubarões e raias) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335).
  More on author: Norman.

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

marinhas demersal; intervalo de profundidade ? - 30 m (Ref. 114953).   Tropical; 29°N - 17°S, 19°W - 13°E (Ref. 114953)

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

Eastern Atlantic: Morocco to southern Angola, a record from Namibia needs confirmation.

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL macho/indeterminado; (Ref. 6497); common length : 65.0 cm TL macho/indeterminado; (Ref. 6497)

Biologia     Glossário (ex. epibenthic)

More or less stationary in inshore coastal waters to moderate depth. Feeds on benthic invertebrates, mainly crustaceans. Common length is 60-66 cm TL. Males mature at ca. 42 cm TL (Ref. 114953). Ovoviviparous. Produces small litters of 1-3 pups (Ref. 114953).

Life cycle and mating behavior 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).

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

Stehmann, M., 1990. Rhinobatidae. p. 23-27. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 6497)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

  Criticamente ameaçada (CR) (A2d); Date assessed: 04 August 2020

CITES (Ref. 128078)


CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

  Harmless




Utilização humana

FAO(Publication : search) | FishSource |

Mais informação

Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores
Ecology
Ecologia
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Population dynamics
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Length-weight rel.
Length-length rel.
Frequência de comprimento
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Abundances
Life cycle
Reprodução
Maturities
Fecundities
Spawnings
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Egg(s)
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Genetics
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Fontes da internet

Aquatic Commons | BHL | Cloffa | Websites from users | Consultar FishWatcher | CISTI | Catalog of Fishes(Género, Espécies) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genoma, nucleotídeo) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Árvore da vida | Wikipedia(ir para, procurar) | World Records Freshwater Fishing | Registo zoológico

Estimates based on models

Preferred temperature (Ref. 115969): 25.1 - 28, mean 27.3 (based on 202 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00151 - 0.00578), b=3.13 (2.96 - 3.30), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.8   ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).