分类 / Names
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) >
Rajiformes (Skates and rays) >
Gurgesiellidae (Pygmy skates)
Etymology: Cruriraja: Latin, crur, cruris = pertaining to a leg + Latin, raja = a ray (Raja sp) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 150 - 620 m (Ref. 11284). 深水域; 28°S - 40°S
Western Indian Ocean: KwaZulu-Natal, South Africa to Mozambique. Previous records from Namibia to the Eastern Cape Coast of South Africa refer to Cruriraja hulleyi.
東南大西洋: 已知只來自那米比亞的盧德里茲到南非的德爾班了。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 55.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5578)
简单描述
检索表 | 型态特徵 | 形态测量图
A rough legskate with a pointed snout covered by large conspicuous white thorns that are also found around the eyes, on the shoulders, and in several rows from the nape to the 1st dorsal fin (Ref. 5578). Legskates have pelvic fins separated into a mobile leg-like front lobe, and a rear lobe that may be fused to the tail base (Ref. 5578). Sandy brown above usually with scattered dark brown and whitish spots (very conspicuous in young and becoming obscure in adults; white below (Ref. 5578). Tail with conspicuous dark brown bandings in juveniles (Ref. 5578).
一个粗糙的 魮具有一个在肩上，尖的吻被大的显着白色的刺盖着的也那是发现眼睛四周, 与在几排从后颈到第一背鳍中.(参考文献 5578) 魮有分开成移动的腿状前叶的腹鳍 , 与可能融合成尾部基底的一个后面的叶。 (参考文献 5578) 上方黄褐色的通常有分散的深褐色而微白色的斑点 (非常显着的当幼鱼时而且变成暗当成鱼时; 腹面白色的.(参考文献 5578) 在稚鱼中尾部有显着的深褐色的条纹。 (参考文献 5578)
Found on the uppermost slope (Ref. 5578). Feed on small crustaceans, dragonets, squid, polychaete worms and flatworms (Ref. 5578). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 4.5 cm long and 2.4 cm wide (Ref. 41249). Caught by hake bottom trawlers (Ref. 5578).
栖息于最上面的斜坡了。 (参考文献 5578) 捕食小型甲壳动物，鼠鱼，乌贼，多毛类的蠕虫与扁形虫。 (参考文献 5578) 卵生的。 明显的成对出现。 幼鱼可能倾向跟随大的个体, 例如他们的母亲.(参考文献 205) 卵为长方形鞘囊具有僵硬的触角沈积在沙滩或泥滩的角落.(参考文献 205) 卵鞘是 4.5 公分长与 2.4 公分宽的.(参考文献 41249) 被鳕鱼底拖网捕获了。 (参考文献 5578)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).東南大西洋: 已知只來自那米比亞的盧德里茲到南非的德爾班了。
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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Estimates based on models
Preferred temperature (Ref.
123201): 11.7 - 17.9, mean 15.8 °C (based on 5 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00222 - 0.01969), b=2.95 (2.71 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.53 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
