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Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays)
Etymology: Urogymnus: Greek, oura = tail + Greek, gymnos = naked (Ref. 45335); lobistoma: Name from Latin 'lobus' for elongated projection or protuberance and 'stoma' for mouth, refers to its protrusible, tubelike mouth.. More on author: Last.

Environment / Climate / Range Ecology

Marine; benthopelagic. Tropical, preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Malay Archipelago: from Sumatra to Borneo.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 49.2 cm WD male/unsexed; (Ref. 58327); 100.0 cm WD (female)

Short description Morphology | Morphometrics

This species belong to the 'uarnacoides' complex, characterized by the following: lateral disc shape with pectoral fin apices broadly rounded rather than narrowly rounded or angular; color plain (usually uniform light to dark brown dorsally, and pale or whitish ventrally with or without a dark margin; a long and slender whiplike tail and platelike denticles in a broad dorsal band in adults. This species differs from H. hortlei in having a highly protrusible mouth and a pelvic girdle with prominent lateral prepelvic processes (Ref. 58327).

An inshore species which I s probably with restricted distribution in brackish habitats that are associated with runoff from large rivers. Feeds on small fishes and prawns. Males mature at ca. 49 cm WD, females at ca. 70 cm WD; born at ca. 19 cm WD (Ref. 114953). Female maturity based on a pregnant female; males apparently smaller than females; full term pup 18.4 cm DW (Ref. 58327).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Manjaji-Matsumoto, B.M. and P.R. Last, 2006. Himantura lobistoma, a new whipray (Rajiformes: Dasyatidae) from Borneo, with comments on the status of Dasyatis microphthamus. Ichthyol. Res. 53(3):290-297. (Ref. 58327)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FisheriesWiki |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00430 - 0.02548), b=3.04 (2.83 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.5 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Low, minimum population doubling time 4.5 - 14 years ().

Vulnerability (Ref. 59153): Very high vulnerability (84 of 100) .

Entered by Capuli, Estelita Emily

Modified by Capuli, Estelita Emily

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Urogymnus lobistoma (Manjaji-Matsumoto & Last, 2006)