Hemitrygon longicauda, Merauke stingray

Hemitrygon longicauda (Last & White, 2013)

Merauke stingray
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Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Myliobatiformes (Stingrays) 鰩目 (Stingrays) > Dasyatidae (Stingrays) 土魟科 (Stingrays) > Dasyatinae
Etymology: longicauda: Name referring to its very long tail.

環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學

海洋 居於水底的; 深度上下限 0 - 1 m (Ref. 94245). ; 8°S - 11°S, 137°E - 148°E (Ref. 114953)

分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri

Western Pacific: endemic to southern Guinea.

大小 / 重量 / 年齡

成熟度: Lm ?  range ? - ? cm
Max length : 31.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 94245)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

This small species is distinguished by the following combination of characters: plain-coloured with disc subcircular to weakly rhombic, denticle patch developing on central disc with age, continuous row of closely spaced thorns extending along mid-line of disc and tail, small mid-shoulder thorns sometimes present and long tail with dorsal fold reduced to low ridge or none at all, width of disc 1.0-1.1 times its length, trunk depressed; pectoral-fin apex broadly rounded; snout broadly triangular, tip extended slightly anterior margins almost straight; very small eyes, length of orbit and spiracle 2-2.3 in snout length; broad interorbital space, more than 3 times orbit length; narrow mouth with 5 oral papillae; weak labial furrows and folds; lower jaw strongly convex; nasal curtain skirt-shaped, short and broad, the margin weakly fringed, nostrils rather oblique; thorns are spear-shaped or lanceleote, in continuous median row, variable in size and becoming larger posteriorly, 3 nearest caudal sting often greatly enlarged; widely-spaced denticles confined to patched between orbits and on central disc of largest individuals; elongated tail is slender and constricted slightly at sting then becoming whip-like, it length 2.3-2.9 times WD, probably 1 sting; ventral fold elongate, low, (base length about equal to distance from snout to 5th gill slit); dorsal fold often a low ridge or absent; triangular pelvic fin (Ref. 114953).
Body shape (shape guide): other (see remarks); Cross section: flattened.

生物學特性     字彙 (例如 epibenthic)

Little is known about the species but apparently lives mainly nearshore in shallow water. Probably attains more than 31 cm DW or 98 cm TL, no adults known (Ref. 114953). Juvenile specimens caught range from 9.1 to 16.2 cm DW (Ref. 94245).

生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 上傳您的推薦信 | 參考文獻 | 合作者 : McEachran, John | 合作者

Last, P.R. and W. White, 2013. Two new stingrays (Chondrichthyes: Dasyatidae) from the eastern Indonesian Archipelago. Zootaxa 3722(1):001-021. (Ref. 94245)

IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))

  近危 (NT) (A2d); Date assessed: 21 September 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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FAO - Publication: search | FishSource |

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營養生態學
食物項目(獵物)
食性組成
食物消耗量
食物配給
捕食者
生態學
生態學
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長度重量比
長度關係
長度-頻率
質量轉換
入添量
豐度
生命週期
繁殖
成熟度
成熟度/鰓部相對
孕卵數
產卵場
產卵聚集

卵發育
仔魚
稚魚動力學
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營養素
耗氧量
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疾病與寄生蟲
毒性 (LC50s)
遺傳學
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遺傳多樣性
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水產養殖系統
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基於模型的估計

系統發育多樣性指數
(參考文獻 82804)
PD50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00447 (0.00189 - 0.01053), b=3.12 (2.92 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層
(參考文獻 69278)
3.7   ±0.5 se; based on size and trophs of closest relatives
釣魚的脆弱性
(Ref. 59153)
Very high vulnerability (90 of 100). 🛈