Scymnodon macracanthus (Regan, 1906)
Largespine velvet dogfish
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板鰓亜鋼(サメとエイ類) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Scymnodon: scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp; odon (Gr.), tooth, referring to large, triangular cutting teeth on lower jaw of S. ringens. (See ETYFish); macracanthus: macro-, from makros (Gr.), long or large; acanthus (L.), from akantha (Gr.), thorn, referring to stout, prominent dorsal-fin spines. (See ETYFish).
More on author: Regan.
Etymology: Scymnodon: scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp; odon (Gr.), tooth, referring to large, triangular cutting teeth on lower jaw of S. ringens. (See ETYFish); macracanthus: macro-, from makros (Gr.), long or large; acanthus (L.), from akantha (Gr.), thorn, referring to stout, prominent dorsal-fin spines. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range 生態学
; 海 深海魚; 深さの範囲 650 - 920 m (Ref. 26346). Deep-water; 50°S - 54°S
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Southeast Pacific: Straits of Magellan. Southwest Pacific: New Zealand (Ref. 26346). Southwest Atlantic: Argentina (Ref. 58839).
サイズ / 重さ / 年齢
簡単な記述 形態学 | 形態計測学
背面の脊椎 (合計): 2; 肛門の骨 0; 臀鰭: 0. Dark brown or blackish in color, dorsal fins with fairly prominent fin spines, moderately long snout, lanceolate upper teeth and bladelike lower teeth with short, oblique cusps, stocky body that tapers abruptly from pectoral region, and moderately large tricuspidate and tricarinate lateral trunk denticles (Ref. 247).
Life cycle and mating behavior 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
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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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
CITES
Not Evaluated
人間に対する脅威
Harmless
Human uses
水産業: 興味がない
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Estimates based on models
Phylogenetic diversity index (Ref. 82805): PD50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00176 - 0.00943), b=3.13 (2.94 - 3.32), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
栄養段階 (Ref. 69278): 4.0 ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (47 of 100) .
Climate Vulnerability (Ref. 125649): (0 of 100) .