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)
Etymology: More on author: Norman.
Environment: milieu / climate zone / depth range / 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)
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
Maturity: Lm ? range ? - ? cm
Max length : 81.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3919)
簡短描述
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).
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)
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年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學基因序列遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Preferred temperature (Ref.
123201): 12.3 - 24.2, mean 15.9 °C (based on 26 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [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 (Ref.
69278): 3.5 ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref.
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).
