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) >
Torpediniformes (Electric rays) >
Narkidae (Sleeper rays)
Etymology: Heteronarce: Greek, heteros = other + Greek, narke = numbness (Ref. 45335).
Eponymy: Dr Samuel Trevor Walton Garman (1843–1927) was an American naturalist, most noted as an ichthyologist and herpetologist. [...] (Ref. 128868), visit book page.
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 深度上下限 73 - 329 m (Ref. 6589). 亞熱帶的; 20°S - 35°S, 27°E - 37°E (Ref. 114953)
Western Indian Ocean: southern Mozambique to Algoa Bay, South Africa (Ref. 5578).
西印度洋: 莫三比克南部到南非奧歌亞灣.(參考文獻 5578)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 25.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6589)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Small ray with an elongated, narrow disc and a small, narrow caudal fin (Ref. 5578). Plain brown above, white below (Ref. 5578).
小的鰭條有一個瘦長又狹窄的體盤與一個小又狹窄的尾鰭。 (參考文獻 5578) 一致褐色的上方, 腹面白色的.(參考文獻 5578)
Found on the outer shelf and upper slope (Ref. 5578). Life history unknown. Males reaches maturity at ca. 17 cm TL (Ref. 114953).
棲息於外部的大陸棚與上層斜坡了。 (參考文獻 5578)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
西印度洋: 莫三比克南部到南非奧歌亞灣.(參考文獻 5578)
Compagno, L.J.V., 1986. Narkidae. p. 113-114. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 6589)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
近危 (NT) (A2d); Date assessed: 01 August 2019
人類使用
漁業: 沒有興趣
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Estimates based on models
Preferred temperature (Ref.
123201): 15.2 - 22, mean 18.1 °C (based on 27 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5627 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (15 of 100).
