分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Myliobatiformes (Stingrays)
鰩目 (Stingrays) >
Dasyatidae (Stingrays)
土魟科 (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.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 底中水層性. 熱帶
Indo-Malay Archipelago: from Sumatra to Borneo.
西太平洋: 南中國海, 外海的婆羅洲西部。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 49.2 cm WD 雄魚/尚未辨別雌雄; (Ref. 58327); 100.0 cm WD (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
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).
這種屬於被特徵為的 'uarnacoides' 複合體那在:之後 側面的體盤形狀用胸鰭頂點寬廣地圓的而不是狹窄地圓的或有角的; 彩色平原 (通常均勻的淡色到深色的褐色背面, 與灰白或微白色的腹地具有或沒有深色邊; 當成魚時的在一條寬的背部條紋中的一個長且細的鞭狀尾部與盤狀的細齒。 這種在有一個方面有別於 H. hortlei 能高度伸展的嘴，而且一個腰帶有突出的側面腹鰭前的突起。 (參考文獻 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
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
西太平洋: 南中國海, 外海的婆羅洲西部。
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 瀕危狀態 (Ref. 130435)
瀕危 (EN) (A2d); Date assessed: 20 May 2020
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Estimates based on models
Preferred temperature (Ref.
123201): 28.2 - 29.1, mean 28.8 °C (based on 232 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00366 - 0.01891), b=3.10 (2.90 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
