Alestes baremoze, Silversides : fisheries

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相关物种
- 物种在
  Alestes
- 物种在
  Alestidae
- - 分类 -
- Alestidae
- Characiformes
- Teleostei
- Chordata
- Animalia

Alestes baremoze (Joannis, 1835)

Silversides

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Alestes baremoze
Picture by Payne, A.

Senegal country information

Common names: Giccal, Saara, Sèlinthe
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Senegal River and Gambia River (Ref. 2880, 42019, 81279).
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: Paugy, D., 2003
National Database:

Common names from other countries

Characin, Egyptian robber, Péré, ... more

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

Teleostei > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Alestes: Greek, alestes, -oy = miller (Ref. 45335).

Issue
Three subspecies were described on the basis of different morphological characters: tchadense Blache, 1964, soudanensis and eburneensis Paugy, 1986. However they should rather be considered as populations having equivalent ecological characteristics (D. Paugy, pers,comm 21 Mar. 2013).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水底中水层性; pH range: 6.5 - 7.8; dH range: ? - 30; 河川洄游 (Ref. 51243). 熱帶; 15°C - 35°C

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

Africa: Senegal, Gambia, the coastal basins of the Côte d'Ivoire (Comoé, Bandama and Sassandra), Volta, Niger/Benué and Chad basin (Ref. 2880, 81279). Also present in Nile, Omo, Lake Albert and Lake Turkana (Ref. 2880, 28714). Three populations - previously as subspecies - may be distinguished by slight morphological differences but they have the same ecological charasterics: in Nile River, Lake Albert, Omo River and Lake Turkana ('baremoze'); in Senegal River, Gambia River, Tominé River, Volta basin, Niger basin and Chad basin ('soudaniensis'); in coastal basins of Côte d'Ivoire, namely Sassandra River, Bandama River and Comoé River ('eburneensis') (Ref. 42019).
非洲: 甘比亞，塞內加爾，尼日, 象牙海岸 (Comoe ， Bandama 與薩桑德拉河) ，查德的佛塔河流域，尼羅河，湖艾伯特湖與特坎那湖的海岸流域。三個型式存在: ( Alestes baremoze soudaniensis) 西非內陸的,( Alestes baremoze eburneensis) 西非海岸的與 ( Alestes baremoze baremoze) Nilotic。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: L_m 20.9, range 25 - ? cm
Max length : 43.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 2703); 40.0 cm TL (female); 最大体重: 500.00 g (Ref. 3023); 最大年龄: 6 年 (Ref. 2758)

简单描述检索表 | 型态特徵 | 形态测量图

背棘 (总数) : 0; 背的软条 (总数) : 10; 臀棘: 0; 臀鳍软条: 22 - 31; 脊椎骨: 41 - 49. Diagnosis: at least 30 gill rakers on lower limb of first gill arch (30-41); 38-51 lateral line scales, with 7.5-9.5 above and 3.5 below; anal fin with three simple rays and 19-28 branched rays; dorsal-fin origin distinctly behind level of pelvic-fin insertions (Ref. 2759, 81279).
具有蓝灰色的黑白腹面 , 浅灰色的鳍银色的色彩,完全地覆盖着鳞片了; 苏丹人的鱼在尾鳍的下叶上有橘色的颜色。臀鳍弯曲的外部边缘: 些微地而且经常地在雌性中凹曲; 形成一个前面的叶在雄性有一些鳍条清楚比较长的。发展良好的囟门。与 A. dentex 重叠分布了。

Mainly diurnal. There is considerable flexibility in its diet, A. baremoze shifts from zooplankton to zoobenthos, detritus and macrophytes as plankton densities decline (Ref. 28714). Occurs at a temperature range of 14.6-35.0°C. In the Malamfatori area (Tchad), seine-net fishery on the River Yobe depends on seasonal upstream (from Lake Chad) and downstream migration during the flood (August-December) and dry (January-March) seasons, respectively. Also, there is an intensive gillnet fishery from July-October at the river mouth. A. baremoze moves offshore (in Lake Chad) beginning March.

主要日行性。在它的食性， A. baremoze 从浮游动物到底栖动物的变化, 碎屑与大型植物的有相当多的弹性当浮游生物密度消退.(参考文献 28714) 生存在一个 14.6-35.0个 ° C. 的温差在 Malamfatori 区域 (Tchad) 中，分别地,在河 Yobe 上的曳网-网的渔场在洪水 (八月-十二月) 与乾 (一月-三月) 季节期间仰赖季节性的向上游的 (从查德湖) 而向下游的迁移。同时, 有一个密集的刺网渔业从七月-在河嘴的十月。 A. baremoze 移动外海 (在查德湖) 初期三月。

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼

Spawning cycle from Tables XVI-XVIII of Ref. 2759 for maturity stages 3-4 GSI 1.5-16% from deltaic zone, upstream (Logone-Chari River), downstream (N'Djamena) and in the southeastern archipelago of Lake Chad. Spawning takes place from 16:30-20:00 h. Eggs spawned in one batch representing 15% of weight of female. Mature females dispersed, not forming groups. 非洲: 甘比亞，塞內加爾，尼日, 象牙海岸 (Comoe ， Bandama 與薩桑德拉河) ，查德的佛塔河流域，尼羅河，湖艾伯特湖與特坎那湖的海岸流域。三個型式存在: ( Alestes baremoze soudaniensis) 西非內陸的,( Alestes baremoze eburneensis) 西非海岸的與 ( Alestes baremoze baremoze) Nilotic。

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

Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré, 1988. État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237. (Ref. 272)

世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)

最不相关 (LC) ; Date assessed: 15 June 2019

CITES (Ref. 131153)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

无害处的

人类利用

渔业: 高经济性

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00833 - 0.01316), b=3.02 (2.96 - 3.08), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

营养阶层 (Ref. 69278): 3.1 ±0.35 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=0.42; tm=2-3; tmax=6).

Fishing Vulnerability (Ref. 59153): Low vulnerability (22 of 100).

价格分类 (Ref. 80766): Unknown.

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