分類 / 名稱
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) >
Carcharhiniformes (Ground sharks)
真鯊目 (Ground sharks) >
Triakidae (Houndsharks)
平滑鮫 (Houndsharks) > Triakinae
Etymology: Triakis: tri-, from tres (L.), three; akis (Gr.), point, referring to each tooth consisting of one large central cusp flanked on by both sides by a small cusplet (See ETYFish); megalopterus: mega-, from megas (Gr.), large; pterus (Gr.), fin, referring to its broad, large fins (See ETYFish).
More on author: Smith.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 居於水底的; 深度上下限 1 - 50 m (Ref. 5578). 亞熱帶的; 30°S - 36°S
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southeast Atlantic: Namibia to Coffee Bay, South Africa.
東南大西洋: 那米比亞到南非的咖啡灣。
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm 145.0, range 140 - 150 cm
Max length : 142 cm TL 雄魚/尚未辨別雌雄; (Ref. 244); 174.0 cm TL (female); 最大體重: 20.0 kg (Ref. 5485)
背棘 (總數) : 0; 臀棘: 0. Blunt snout and a large mouth with small pointed teeth; caudal peduncle short and heavy (Ref. 5578). Grey with numerous black spots which may be sparse or absent in some specimens; new born pups with fewer black spots compared to adults (Ref. 5485); white below (Ref. 5578).
Body shape (shape guide): elongated.
鈍的吻與一大的嘴巴有小的尖齒; 尾柄短與重的.(參考文獻 5578) 灰色的有很多的黑色斑點那可能是稀疏或一些魚種沒有; 新生的幼胎有較少的黑色斑點相較於成魚;(參考文獻 5485) 腹面白色的.(參考文獻 5578)
Occurs off sandy beaches, rocky shores and in shallow bays (Ref. 5578). Feeds on crabs, lobsters, bony fish and small sharks (Ref. 5578). Ovoviviparous (Ref. 50449). Forms schools in summer (Ref. 244). Hardy and keeps well in captivity (Ref. 244). Commonly caught by rock and surf sports anglers but not eaten much (Ref. 244). Meat is dried into shark 'biltong' or jerky which commands a relatively high price (Ref. 244). Attains 160 cm, TL (Ref. 36731).
生存沙灘外,岩岸與在淺灣中.(參考文獻 5578) 吃螃蟹,龍蝦,硬骨魚與小的鯊魚。 (參考文獻 5578) 卵胎生的.(參考文獻 50449) 在夏天形成魚群。 (參考文獻 244) 強壯且保存良好在繁殖場.(參考文獻 244) 通常被磯釣與灘釣者捕獲了但是不多吃.(參考文獻 244) 具有相當高的價格肉被乾製成鯊魚 '乾肉片' 或者薄片。 (參考文獻 244) 達到 160 公分, TL 。 (參考文獻 36731)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Ovoviviparous, embryos feed solely on yolk (Ref. 50449), with 6 to 12 young in a litter (Ref. 244). 30-32 cm at birth (Ref. 244).東南大西洋: 那米比亞到南非的咖啡灣。
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 01 August 2019
人類使用
漁業: 低經濟; 游釣魚種: 是的; 水族館: 公眾的水族館
工具
特別的報告
下載 XML
網路資源
基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00245 (0.00116 - 0.00519), 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) |
4.0 ±0.5 se; based on diet studies. |
回復力 (參考文獻 120179) |
非常低的, 最小族群倍增時間超過14 年 (Fec=6). |
釣魚的脆弱性 (Ref. 59153) |
High to very high vulnerability (71 of 100). 🛈 |
價格種類 (Ref. 80766) |
High.
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