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) >
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
生態學
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 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 55.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5578)
簡短描述
型態特徵 | 形態測量圖
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).
一個粗糙的鯆魮具有一個在肩上，尖的吻被大的顯著白色的刺蓋著的也那是發現眼睛四周, 與在幾排從後頸到第一背鰭中.(參考文獻 5578) 鯆魮有分開成移動的腿狀前葉的腹鰭 , 與可能融合成尾部基底的一個後面的葉。 (參考文獻 5578) 上方黃褐色的通常有分散的深褐色而微白色的斑點 (非常顯著的當幼魚時而且變成暗當成魚時; 腹面白色的.(參考文獻 5578) 在稚魚中尾部有顯著的深褐色的條紋。 (參考文獻 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).
棲息於最上面的斜坡了。 (參考文獻 5578) 捕食小型甲殼動物，鼠魚，烏賊，多毛類的蠕蟲與扁形蟲。 (參考文獻 5578) 卵生的。 明顯的成對出現。 幼魚可能傾向跟隨大的個體, 例如他們的母親.(參考文獻 205) 卵為長方形鞘囊具有僵硬的觸角沈積在沙灘或泥灘的角落.(參考文獻 205) 卵鞘是 4.5 公分長與 2.4 公分寬的.(參考文獻 41249) 被鱈魚底拖網捕獲了。 (參考文獻 5578)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
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參考文獻養殖養殖資訊品種遺傳學Electrophoreses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): 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 (0.00225 - 0.01943), b=2.95 (2.71 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.6 ±0.53 se; based on food items.
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 vulnerability (42 of 100).
