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Polydactylus quadrifilis (Cuvier, 1829)

Giant African threadfin
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Polydactylus quadrifilis   AquaMaps   Data sources: GBIF OBIS
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Image of Polydactylus quadrifilis (Giant African threadfin)
Polydactylus quadrifilis
Picture by Klimpel, S.

Senegal country information

Common names: Capitaine, Elanc, Itiékem
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Occurs in the Sine-Saloum Estuary, Casamance and Senegal rivers (Ref. 28587). Also Ref. 4340, 33587, 57343, 81658.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sg.html
National Fisheries Authority: http://www.refer.sn/sngal_ct/eco/oeps/
Occurrences: Occurrences Point map
Main Ref: Daget, J., 2003
National Database:

Common names from other countries

Gros capitaine, Barbudo gigante africano, Threadfin, ... more

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

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.

Environment: milieu / climate zone / depth range / distribution range 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)

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

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

Maturity: 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)

简单描述 检索表 | 型态特徵 | 形态测量图

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).

生物学特性     字汇 (例如 epibenthic)

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)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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)

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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)

  最不相关 (LC) ; Date assessed: 15 July 2014

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

渔业: 商业性; 游钓鱼种: 是的
FAO(渔业: 产生; publication : search) | FishSource | 周边海洋

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Estimates based on models

Preferred temperature (Ref. 115969): 22.3 - 28, mean 26 (based on 48 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00510 - 0.00855), b=3.09 (3.03 - 3.15), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
营养阶层 (Ref. 69278):  4.0   ±0.66 se; based on food items.
回复力 (Ref. 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).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 3 data-limited stock assessments.
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (44 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (87 of 100).
价格分类 (Ref. 80766):   High.