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) >
Rhinopristiformes (Shovelnose rays)
鰩目 (Shovelnose rays) >
Rhinobatidae (Guitarfishes)
琵琶鱝科 (Guitarfishes)
More on author: Norman.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
海洋 居於水底的; 深度上下限 60 - 185 m (Ref. 11228). 亞熱帶的; 27°S - 33°S, 17°E - 34°E (Ref. 114953)
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South-West Indian Ocean: Mozambique to the western Cape, South Africa.
西印度洋: 莫三比克南部到南非開普省西部。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 81.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3919)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
A guitarfish with a narrow, wedge-shaped snout and pectoral disc (Ref. 5578). Dorsal surface brown, with numerous blue-grey ocelli ringed with dark brown on the disc, head, fins, and tail (Ref. 3919).
Body shape (shape guide): elongated.
一個犁頭鰩具有一個狹窄又楔形的吻與胸盤。 (參考文獻 5578) 背面褐色, 有很多的藍灰色假眼斑的環深褐色的在體盤，頭部，鰭與尾部上.(參考文獻 3919)
Rare species found offshore (Ref. 5578). Ovoviviparous (Ref. 50449). Probably caught by trawlers (Ref. 5578).
稀有的種發現於外海了。 (參考文獻 5578) 卵胎生的.(參考文獻 50449) 可能被底拖網捕獲了。 (參考文獻 5578)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).西印度洋: 莫三比克南部到南非開普省西部。
Compagno, L.J.V., 1986. Rhinobatidae. p. 128-131. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3919)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
人類使用
漁業: 沒有興趣
工具
特別的報告
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網路資源
Estimates based on models
Preferred temperature (參考文獻
123201): 12.3 - 24.2, mean 15.9 °C (based on 26 cells).
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00151 - 0.00578), b=3.13 (2.96 - 3.30), 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): 3.5 ±0.5 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
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