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) >
Carcharhiniformes (Ground sharks) >
Triakidae (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); semifasciata: semi-, from semis (L.), half; fasciatus (L.), banded, referring to striking black saddle marks that cover only dorsal half of body (See ETYFish).
More on author: Girard.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海; 汽水性の 底生の; 深さの範囲 0 - 156 m (Ref. 96339), usually ? - 6 m (Ref. 55312). Subtropical; 45°N - 19°N, 126°W - 105°W (Ref. 55312)
Eastern Pacific: Oregon, USA to the Gulf of California.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 109.8, range 100 - 129 cm
Max length : 198 cm TL オス/雌雄の選別がない; (Ref. 244); 180.0 cm TL (female); common length : 160 cm TL オス/雌雄の選別がない; (Ref. ); 最大公表体重: 18.4 kg (Ref. 40637); 最大記録サイズ: 30 年 (Ref. 6145)
Found in shallow water from the intertidal to deeper waters, most commonly in enclosed muddy bays; including estuaries and lagoons (S. Wilson, pers. comm.). Prefer sandy areas, mud flats, and bottoms strewn with rocks near rocky reefs and kelp beds. Feed mainly on crabs, shrimps, bony fish, fish eggs, clam necks and innkeeper worms among a large variety of food in its diet. Form mixed schools. Ovoviviparous (aplacental), with 4 to 29 young in a litter. Utilized fresh or frozen for human consumption.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Females produce 6-24 young, which are 20-23 cm long at birth (Ref. 43439). Ovoviviparous, embryos feed solely on yolk (Ref. 50449).
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; 水族館・水槽: 商業
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
好ましい温度 (参照
123201): 12.8 - 24, mean 20.4 °C (based on 131 cells).
系統多様性指数 (参照
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00234 (0.00124 - 0.00443), b=3.12 (2.96 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 3.7 ±0.2 se; based on diet 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 (K=0.07-0.09; tm=11-21; tmax=30; Fec=4-12).
漁業の脆弱性 (Ref.
59153): Very high vulnerability (80 of 100).
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