Philippines country information

Common names: [No common name]
Occurrence: misidentification
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Outside distributional range (Ref. 114953, 130662).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Last, P.R., S. Weigmann and G.J.P. Naylor, 2023
National Database:

Common names from other countries

Dwarf whipray, Dwarf whipray, Dwergpijlstaartrog, ... more

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Urogymninae
Etymology: Brevitrygon: Derived from brevis (Latin), meaning short and trygṓn (Greek τρυγών), meaning stingray, in allusion to the short, semi-rigid tails of these stingrays; walga: Name is presumably a variant spelling of wolga, from Wolga Tenkée, a local name for this or a related stingray from the Ganges Delta of India..
More on authors: Müller & Henle.

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

marino; salobre demersal; rango de profundidad 0 - 40 m (Ref. 121773). Tropical; 30°N - 10°N, 34°E - 76°E

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Indian Ocean: eastern India (Bay of Bengal, Madras), Bangladesh to Myanmar (East of Bok Ye-gan).

Length at first maturity / Tamaño / Peso / Age

Maturity: L_m 16.7 range ? - ? cm
Max length : 20.3 cm WD macho / no sexado; (Ref. 130662); 23.3 cm WD (female)

Demersal on insular and continental shelves, and occasionally found in coastal embayments (Ref. 58048); primarily in shallow water from near the shore in estuaries to nearby fishing grounds in bays (Ref. 130662). 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 Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

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 | Referencias | Coordinador : McEachran, John | Colaboradores

Last, P.R., S. Weigmann and G.J.P. Naylor, 2023. The Indo-Pacific stingray genus Brevitrygon (Myliobatiformes: Dasyatidae): clarification of historical names and description of a new species, B. manjajiae sp. nov., from the western Indian Ocean. Diversity 15: 1-75. (Ref. 130662)

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

Pesquerías: comercial

FAO(Publication : search) | FishSource |

Más información

Trophic ecology
componentes alimenticios
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Ecology
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Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Recruitments
Abundances

Life cycle
Reproducción
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larva
Dinámica larvaria

Distribution
Países
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BRUVS - Videos

Anatomy
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Physiology
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Nutrients
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Tipo de natación
Swimming speeds
Visual pigment(s)
Sonidos de peces
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genética
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Human related
Aquaculture systems
Perfiles de acuicultura
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Ciguatera cases
Stamps, coins, misc.

Outreach
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Taxonomy
Nombres comunes
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References
Referencias

Herramientas

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

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).

Nivel trófico (Ref. 69278): 3.5 ±0.5 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Assuming fecundity<100).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Price category (Ref. 80766): Low.

Brevitrygon walga (Müller & Henle, 1841)