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Brevitrygon walga (Müller & Henle, 1841)

Scaly whipray
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Brevitrygon walga
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Malaysia country information

Common names: Dwarf whipray, Ketuka, Pari lalat
Occurrence: misidentification
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref: Ahmad, A., A.A. Abdul Haris Hilmi, A.C. Gambang, S. Ahemad and A.R. Solahuddin (eds.), 2004
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded during the 1994-2004 study (Ref. 53392). Sold fresh in Malaysian markets (Ref. 27550). Ouside distributional range (Ref. 114953).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/my.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016
National Database:

Common names from other countries

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Urogymninae
Etymology:   More on authors: Müller & Henle.

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

marino demersale; distribuzione batimetrica 0 - 40 m (Ref. 121773).   Tropical; 30°N - 10°N, 34°E - 76°E

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Northern Indian Ocean: from the Red Sea to western India, including the Persian Gulf.

Length at first maturity / Size / Peso / Age

Maturity: Lm 16.7  range ? - ? cm
Max length : 45.0 cm WD maschio/sesso non determinato; (Ref. 27550)

Biologia     Glossario (es. epibenthic)

Demersal on insular and continental shelves, and occasionally found in coastal embayments (Ref.58048). Ovoviviparous (Ref. 50449). Caught in large quantities as by-catch of bottom trawl and trammel net fisheries. Utilized for its meat, but of limited value due to its very small size (Ref.58048).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Ovoviviparous (Ref. 205), with histotrophy. Gives birth to litters of 1-2 pups; no reproductive synchronicity. Born at 8-10 cm WD (Ref.58048). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Bibliografia | Coordinatore : McEachran, John | Collaboratori

Last, P.R. and L.J.V. Compagno, 1999. Dasyatididae. Stingrays. p. 1479-1505. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome. (Ref. 9840)

IUCN Red List Status (Ref. 130435)

  Near Threatened (NT) (A2d+3d); Date assessed: 09 February 2017

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesca: commerciale
FAO(Publication : search) | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Consumo di cibo
Razione
Nomi Comuni
Sinonimi
Metabolismo
Predatori
Ecotossicologia
Riproduzione
Maturità
Deposizione
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
Reclutamento
Abbondanza
Bibliografia
Acquacoltura
Profilo di acquacoltura
Varietà
Genetica
Electrophoreses
Ereditarietà
Malattie
Elaborazione
Mass conversion
Collaboratori
Immagini
Stamps, Coins Misc.
Suoni
Ciguatera
Velocità
Modalità di nuoto
Area branchiale
Otoliths
Cervelli
Vista

Strumenti

Special reports

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Fonti Internet

Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(Genere, Specie) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, ricerca) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 28.1 - 29.1, mean 28.8 (based on 326 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00123 - 0.00371), b=3.04 (2.88 - 3.20), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  3.5   ±0.5 se; based on size and trophs of closest relatives
Resilienza (Ref. 120179):  Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Assuming fecundity<100).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
Price category (Ref. 80766):   Low.