Elasmobranchii (haaien en roggen) (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Urogymninae
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 authors: Manjaji-Matsumoto & Last.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien benthopelagisch. Tropical
Indo-Malay Archipelago: from Sumatra to Borneo.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 49.2 cm WD mannelijk / geslacht onbekend; (Ref. 58327); 100.0 cm WD (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
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).
Body shape (shape guide): other.
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).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
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Schattingen op basis van modellen
Gewenste temperatuur (Ref.
123201): 28.2 - 29.1, mean 28.8 °C (based on 232 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00482 - 0.02174), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Kwetsbaarheid van de visserij (Ref.
59153): Very high vulnerability (90 of 100).
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