分类 / Names
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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: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋; 半咸淡水 居于水底的; 深度上下限 0 - 55 m (Ref. 26912). 热带; 41°N - 14°S, 93°W - 35°W (Ref. 57343)
Western Atlantic: New Jersey, USA to Salvador, Brazil. Reported to range to Uruguay (Ref. 9626). Not occurring in the northern and western Gulf of Mexico.
西大西洋: 对萨尔瓦多巴西的美国纽泽西。 报告排列到乌拉圭。 (参考文献 9626) 不出现在北方与西方的墨西哥湾。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 33.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 57343); common length : 20.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3796)
背棘 (总数): 8 - 9; 背的软条 (总数): 11; 臀棘 3; 臀鳍软条: 12 - 14
Found on sandy and muddy bottoms of coastal waters, estuaries and mangroves, and occasionally in the surf (Ref. 57343). Young aggregate near river mouths (Ref. 57343). Common around islands (Ref. 9710). Nocturnal feeder, taking crustaceans, chaetognaths, plant material, and polychaetes (Ref. 57343). May have a prolonged spawning season (Ref. 57343).
栖息于沿岸水域的沙泥底, 河口与红树林, 而且偶见于海浪。 (参考文献 57343) 在河口附近的幼鱼聚集.(参考文献 57343) 普遍的岛周围.(参考文献 9710) 夜行的捕食者, 带甲壳动物，毛颚类动物，植物与多毛类动物.(参考文献 57343) 可能有一个延长产卵季节。 (参考文献 57343)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
西大西洋: 对萨尔瓦多巴西的美国纽泽西。 报告排列到乌拉圭。 (参考文献 9626) 不出现在北方与西方的墨西哥湾。
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)
人类利用
渔业: 低经济
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Estimates based on models
Preferred temperature (Ref.
123201): 22.9 - 28, mean 26.4 °C (based on 440 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00541 - 0.00807), b=3.11 (3.05 - 3.17), in cm total length, based on LWR estimates for this species (Ref.
93245).
营养阶层 (Ref.
69278): 3.7 ±0.4 se; based on diet studies.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (23 of 100).
Nutrients (Ref.
124155): Calcium = 176 [88, 325] mg/100g; Iron = 1.17 [0.60, 2.03] mg/100g; Protein = 19.5 [18.0, 21.1] %; Omega3 = 0.272 [0.172, 0.423] g/100g; Selenium = 51.1 [27.2, 99.4] μg/100g; VitaminA = 16.1 [7.3, 34.6] μg/100g; Zinc = 1.37 [0.95, 1.99] mg/100g (wet weight);
