分類 / Names
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) >
Carcharhinidae (Requiem sharks)
Etymology: Rhizoprionodon: rhiza (Gr.), root; prion (Gr.) saw; odon (Gr.), tooth, referring to teeth with serrated (saw-like) bases, or roots [replacement name for Rhizoprion Ogilby 1915, preoccupied by Rhizoprion Jourdan 1861 in mammals]. (See ETYFish); lalandii: In honor of naturalist and explorer Pierre Antoine Delalande (1787-1823), who collected type [authorship often attributed to Müller & Henle, who published Valenciennes’ description]. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 3 - 70 m (Ref. 244). Tropical; 13°N - 35°S, 78°W - 31°W
Western Atlantic: Panama to southern Brazil and Uruguay (Ref. 58839).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 61.8, range 58 - ? cm
Max length : 80.0 cm TL (female); common length : 55.0 cm TL オス/雌雄の選別がない; (Ref. 5217); 最大公表体重: 0.00 g
Inhabits shallow coastal waters, on sandy and muddy bottoms, and not normally found in lagoons and estuaries (Ref. 244). Feeds on small bony fishes, including sardines and anchovies, also shrimp and squid (Ref. 244). Viviparous, with 1 to 4 young in a litter; size at birth 33 to 34 cm (Ref. 244). Its flesh is highly appreciated and is marketed dried salted.
Distinct pairing with embrace (Ref. 205). Viviparous, placental (Ref. 50449).
Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)
Human uses
水産業: 商業
用具
特記事項
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 24.6 - 28, mean 27.2 °C (based on 104 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00177 - 0.00409), b=3.08 (2.96 - 3.20), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 4.3 ±0.65 se; based on food items.
回復力 (Ref.
120179): 非常に低い, １４年以上の倍増期間の最小個体群 (Fec=1).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
