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) >
Heterodontiformes (Bullhead and horn sharks)
虎鯊目 (Bullhead and horn sharks) >
Heterodontidae (Bullhead, horn, or Port Jackson sharks)
異齒鮫科 (Bullhead, horn, or Port Jackson sharks)
Etymology: Heterodontus: heteros (Gr.), different; odontos (Gr.), tooth, referring to pointy teeth (for clutching prey) at front of jaws, different than rounded molar-like teeth (for grinding hard-shelled invertebrates) at the back (See ETYFish); ramalheira: In honor of João Ramalheira, captain of the trawler from which holotype was collected, and “who has brought in much valuable scientific material” [presumably a noun in apposition, without the patronymic “i”] (See ETYFish).
More on author: Smith.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 深度上下限 40 - 305 m (Ref. 106604), usually 100 - ? m (Ref. 43278). 深水域; 22°N - 26°S, 30°E - 60°E
Western Indian Ocean: off southern Mozambique and Natal, South Africa (Ref. 5578), also off the eastern shore of the Arabian Peninsula.
西印度洋: 外海的莫三比克南部與南非的納塔爾 (參考文獻 5578), 也外海的阿拉伯半島的東岸。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 64.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 247); 83.0 cm TL (female)
背棘 (總數) : 2; 臀棘: 0. Dark red-brown with scattered white spots (Ref. 6576).
暗紅褐色有分散的白色斑點.(參考文獻 6576)
Found on the outer continental shelf and uppermost slopes (Ref. 247, 43278). Benthic (Ref. 43278). Feeds on crabs (Ref. 5578, 43278). Oviparous (Ref. 50449).
棲息於大陸棚外緣與最上面的斜坡了。 (參考文獻 247) 吃螃蟹。 (參考文獻 5578) 卵生的.(參考文獻 50449)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Oviparous (Ref. 50449). Distinct pairing with embrace (Ref. 205).西印度洋: 外海的莫三比克南部與南非的納塔爾 (參考文獻 5578), 也外海的阿拉伯半島的東岸。
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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
人類使用
漁業: 沒有興趣; 水族館: 公眾的水族館
工具
特別的報告
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Estimates based on models
Preferred temperature (Ref.
123201): 17.9 - 21.8, mean 19.1 °C (based on 15 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5059 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00165 - 0.00876), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.5 ±0.60 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 to high vulnerability (53 of 100).
