分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks) (See ETYFish); antarcticus: -icus (L.), belonging to: the Antarctic (Whitley presumed this to be the first shark recorded from there) (See ETYFish).
More on author: Whitley.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 底生の漂泳性; 深さの範囲 485 - 1150 m (Ref. 50224). Deep-water
South Indo-Pacific and South Atlantic.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 438 cm TL オス/雌雄の選別がない; (Ref. 50224); 430.0 cm TL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
脊つい: 36 - 38. Somniosus antarcticus differs from S. pacificus by the following characters: interdorsal space about 80% of prebranchial length (vs. 70%); height of first dorsal fin about 3.0% of precaudal length (PCL) (vs. 3.7%); height of second dorsal fin about 2.9% of PCL (vs. 3.4%); number of turns in spiral valve 36-41 (mode 39) (vs. 32-37, mode 33); precaudal vertebrae 30-31 (mode 30) (vs. 28-30, mode 29) (Ref. 50224).
Body shape (shape guide): elongated.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Yano, K., J.D. Stevens and L.J.V. Compagno, 2004. A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae). Ichthyol. Res. 51:360-373. (Ref. 50224)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: bycatch
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00170 - 0.00889), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
4.5 ±0.58 se; based on food items. |
漁業の脆弱性 (Ref. 59153) |
Very high vulnerability (90 of 100). 🛈 |