Scoliodon macrorhynchos (Bleeker, 1852)
Pacific spadenose shark
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Carcharhiniformes (Ground sharks) 白眼鮫目 (Ground sharks) > Carcharhinidae (Requiem sharks) 白眼鮫科 (Requiem sharks)
Etymology: Scoliodon: scolio-, from skolios (Gr.), oblique; odon (Gr.), tooth, referring to oblique teeth pointing towards sides of mouth (See ETYFish); macrorhynchos: macro-, from makros (Gr.), long; rhynchos (Gr.), snout, referring to its long (and extremely flattened) snout (See ETYFish).
Etymology: Scoliodon: scolio-, from skolios (Gr.), oblique; odon (Gr.), tooth, referring to oblique teeth pointing towards sides of mouth (See ETYFish); macrorhynchos: macro-, from makros (Gr.), long; rhynchos (Gr.), snout, referring to its long (and extremely flattened) snout (See ETYFish).
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
海洋 居于水底的.
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Western Central Pacific: W Indonesia, Malaysia, Gulf of Thailand, Singapore, Borneo, Philippines, China, Hong Kong, Taiwan and Japan; exceptions, E Indonesia, New Guinea, northern Australia, and remainder of the Oceania region.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm 42.9, range 38 - 39.7 cm
Max length : 71.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 126960); 80.0 cm TL (female); 最大体重: 220.88 g (Ref. 124713)
Max length : 71.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 126960); 80.0 cm TL (female); 最大体重: 220.88 g (Ref. 124713)
简单描述 检索表 | 型态特徵 | 形态测量图
脊椎骨: 149 - 171. This small carcharhinid species is distinguished by the following set of characters: snout long and extremely flattened; slender body and tail; smooth-edged teeth with slender, strongly oblique, blade-like cusps and no cusplets; anterior teeth strongly sexually dimorphic, for adult males greatly elongate and flexuous; total tooth row counts 25-28/23-28 rows or 48-56 total rows; second dorsal-fin origin well posterior of anal-fin origin, about opposite posterior third of anal-fin base; second dorsal-fin origin to anal fin origin 6.0-9.1% TL, 1.3-2.5 times second dorsal-fin base; interdorsal space 17.9-22.2% TL; small pelvic fins, anterior margins 41-56% of pectoral anterior margin; first dorsal fin small, broadly triangular, origin behind pectoral fin free rear tips, free rear tip over posterior half of pelvic fin bases, length 12.9-15.5% TL, inner margin 2.1-3.0 in base; second dorsal fin very small, base 2.0-3.5 times height; height 18-27% of first dorsal-fin height; anal fin large, length 11.1-14.1% TL, height 1.7-2.5 times second dorsal-fin height, base 1.9-3.1 times second dorsal-fin base; total vertebral count 149-171, monospondylous precaudal count 44-50, diplospondylous precaudal count 53-64, diplospondylous caudal count 49-59, precaudal count 98-114; colour greenish-bronze dorsally, off white ventrally when fresh; preserved specimens are slate-grey dorsally whitish ventrally with waterline clearly demarcated along head, more diffuse along body, no distinct black spots on fins (Ref. 84283).
Adults are found in shallow, inshore waters, most abundant near large freshwater outflows, e.g. Pearl River estuary (Hong Kong) and the large Borneo drainage systems (Ref. 84283).
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 : Compagno, Leonard J.V. | 合作者
White, W.T., P.R. Last and G.J.P. Naylor, 2010. Scoliodon macrorhynchos (Bleeker, 1852), a second species of spadenose shark from the Western Pacific (Carcharhiniformes: Carcharhinidae). pp. 61-76. In P.R. Last, W.T. White, and J.J. Pogonoski (eds). Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32. (Ref. 84283)
对人类的威胁
人类利用
FAO - Publication: search | FishSource |
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基于模型的估算
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系统发育多样性指数 (参考文献 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00309 (0.00197 - 0.00484), b=3.03 (2.90 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
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营养阶层 (参考文献 69278) |
4.0 ±0.6 se; based on size and trophs of closest relatives |
| Generation time | 4.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
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回复力 (参考文献 120179) |
非常低的, 最小族群倍增时间超过14 年 (Fec = 1; K=0.2;). |
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渔业脆弱性 (Ref. 59153) |
Moderate vulnerability (41 of 100). 🛈 |