Teleostei >
Carangaria/misc (Various families in series Carangaria) >
Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
More on author: Cuvier.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
海洋; 淡水; 半咸淡水 居于水底的; 深度上下限 15 - 55 m (Ref. 10799). 热带; 22°N - 5°S, 26°W - 13°E (Ref. 57343)
Eastern Atlantic: Senegal to Angola (Ref. 57402). Also reported from Mauritania (Ref. 55783).
东大西洋: 塞内加尔到刚果。 记录来自毛里塔尼亚了。 (参考文献 55783)
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 200 cm TL 雄鱼/尚未辨别雌雄; (Ref. 57402); common length : 150 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3659); 最大体重: 75.0 kg (Ref. 7386)
背棘 (总数) : 9; 背的软条 (总数) : 12 - 13; 臀棘: 3; 臀鳍软条: 11 - 12. Diagnosis: pectoral fin with 4 threadlike filaments (Ref. 57402, 81658). Pectoral fin inserted very low on body, generally somewhat longer than upper part of fin (Ref. 57402).
Body shape (shape guide): fusiform / normal.
Occurs in shallow coastal waters, over sandy and muddy bottoms, sometimes in brackish habitats (Ref. 57343, 81658). Enters estuaries (Ref. 57402), occasionally caught in fresh water (Ref. 57402, 81658). Very large specimens are only found in marine waters (Ref. 81658). Feeds on crustaceans and fishes (Ref. 10799, 81658). Flesh fairly tasteful (Ref. 57402).
出现于浅水域, 在沙泥底之上, 有时在半咸淡的栖息地.(参考文献 57343) 吃甲壳动物和鱼类。 (参考文献 10799)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
东大西洋: 塞内加尔到刚果。 记录来自毛里塔尼亚了。 (参考文献 55783)
Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 商业性; 游钓鱼种: 是的
工具
特别资料
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网络资源
基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00676 (0.00529 - 0.00863), b=3.10 (3.04 - 3.16), in cm total length, based on LWR estimates for this species (Ref. 93245). |
营养阶层 (参考文献 69278) |
4.0 ±0.66 se; based on food items. |
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Generation time |
2.7 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
回复力 (参考文献 120179) |
中等的, 族群倍增时间最少 1.4 - 4.4年 (K=0.34-0.41; assuming tm=3-4). |
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Rate of population increase |
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 3 data-limited stock assessments. |
渔业脆弱性 (Ref. 59153) |
Moderate vulnerability (44 of 100). 🛈 |
气候脆弱性 (Ref. 125649) |
Very high vulnerability (87 of 100). 🛈 |
价格分类 (Ref. 80766) |
High.
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营养素 (Ref. 124155) |
Calcium = 59.4 [32.4, 109.8] mg/100g; Iron = 0.818 [0.418, 1.451] mg/100g; Protein = 20.1 [18.5, 21.7] %; Omega3 = 0.213 [0.132, 0.349] g/100g; Selenium = 79.1 [38.5, 162.9] μg/100g; VitaminA = 6.04 [2.46, 14.30] μg/100g; Zinc = 0.742 [0.514, 1.115] mg/100g (wet weight); |