分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) >
Rhinopristiformes (Shovelnose rays) >
Rhinobatidae (Guitarfishes)
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335).
More on author: Norman.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
海洋 居于水底的; 深度上下限 75 - 253 m (Ref. 11228). 深水域; 2°S - 31°S, 30°E - 43°E (Ref. 114953)
分布
领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Western Indian Ocean: Kenya to Natal, South Africa.
西印度洋: 肯亞到南非的納塔爾。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 127 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3919)
简单描述
检索表 | 型态特徵 | 形态测量图
A guitarfish with a narrow, sharply pointed snout and a narrow pectoral disc; nasal flaps extend only to the inner nostril edges (Ref. 5578). Plain olive-green above, without spots; prominent black blotch on underside of snout (Ref. 5578).
Body shape (shape guide): elongated.
一个犁头鳐具有一个狭窄的, 非常尖的吻与一个狭窄的胸盘; 鼻盖只延伸到内部的鼻孔边缘。 (参考文献 5578) 单色的橄榄绿色的上方, 没有斑点; 在吻部下面上的突出的黑色斑块.(参考文献 5578)
A rare and unknown species found offshore on the shelf (Ref. 5578). Ovoviviparous (Ref. 50449). Taken as bycatch of trawl and gillnet fisheries (Ref. 114953).
一个稀有与未知的种在大陆架上发现于外海了。 (参考文献 5578) 卵胎生的.(参考文献 50449)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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: 肯亞到南非的納塔爾。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 没有兴趣
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特别资料
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基于模型的估算
首选温度 (参考文献
123201): 18 - 22.3, mean 19.8 °C (based on 23 cells).
系统发育多样性指数 (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00150 - 0.00581), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.8 ±0.4 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
渔业脆弱性 (Ref.
59153): Very high vulnerability (76 of 100).
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