分類 / 名前
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板鰓亜鋼(サメとエイ類) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).
More on author: Macleay.
Taxonomic Remarks
Junior synonym Squalus acutipinnis Regan, 1908 is considered a valid species in Ref. 109601, 130168.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 底生の; 深さの範囲 30 - 750 m (Ref. 27121), usually 80 - 300 m (Ref. 57911). Subtropical; 9°C - 23°C (Ref. 57911); 42°N - 60°S, 100°E - 140°W (Ref. 247)
Eastern Indian Ocean: previously considered to be an Australian endemic (Ref. 49645). Eastern Atlantic: confirmed to occur in the Mediterranean (Ref. 93472). Dogfishes presently referred to in current literature as Squalus megalops appear to belong to a complex of similar species. Specimens from the different regions still need to be compared carefully (Ref. 6871).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 57.0, range 49 - 57 cm
Max length : 72.0 cm TL オス/雌雄の選別がない; (Ref. 104718); 89.0 cm TL (female); 最大記録サイズ: 32 年 (Ref. 93445)
背面の脊椎 (合計) : 2; 肛門の骨: 0. A small dogfish with a short, angular snout and a small mouth almost as wide as the snout is long; body without spots; 1st dorsal fin spine over pectoral fins (Ref. 5578). Bronze-grey above, white below; dorsal fins with black tips and white edges but markings inconspicuous in adults (Ref. 5578).
Body shape (shape guide): elongated.
Found on the outer continental shelves and upper slopes, on or near the bottom (Ref. 31367); sublittoral below 130 m (Ref. 11230). Young mostly pelagic off the outer shelves (Ref. 5578). Aggregations by sex are regularly observed (Ref. 6871). Feeds on bony fishes, shrimps and other crustaceans, cephalopods and other elasmobranchs (Ref. 247). Ovoviviparous (Ref. 205), with 2 to 4 young in a litter (Ref. 247). Gestation period is 2 years (Ref. 36731). Utilized for human consumption, the flesh most appealing dried salted or smoked (Ref. 6871). Also consumed fresh (Ref. 31367). Minimum depth reported from Ref. 6808.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Distinct pairing with embrace (Ref. 205). Ovoviviparous, with 2 to 4 young in a litter. Gestation period is about two years. Size at birth 20-24 cm TL (Ref. 6871).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
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: 商業; ゲームフィッシュ: はい
用具
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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
好ましい温度 (参照
123201): 12.8 - 22.8, mean 17.3 °C (based on 216 cells).
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00247 - 0.00642), b=3.06 (2.92 - 3.20), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 4.3 ±0.3 se; based on diet studies.
Generation time: 11.7 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (参照
120179): 非常に低い, 14年以上の倍増期間の最小個体群 (tmax = 32; Fec=2).
漁業の脆弱性 (Ref.
59153): High to very high vulnerability (68 of 100).
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栄養素 (Ref.
124155): Calcium = 19.3 [4.2, 98.9] mg/100g; Iron = 0.683 [0.175, 2.106] mg/100g; Protein = 18.6 [16.7, 20.3] %; Omega3 = 0.389 [0.141, 1.026] g/100g; Selenium = 29 [9, 93] μg/100g; VitaminA = 23.7 [6.0, 99.3] μg/100g; Zinc = 0.605 [0.283, 1.186] mg/100g (wet weight);