Glaucostegus cemiculus, Blackchin guitarfish : fisheries, gamefish

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相关物种
- 物种在
  Glaucostegus
- 物种在
  Glaucostegidae
- - 分类 -
- Glaucostegidae
- Rhinopristiformes
- Elasmobranchii
- Chordata
- Animalia

Glaucostegus cemiculus (GeoffroySaint-Hilaire, 1817)

Blackchin guitarfish

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Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Glaucostegus cemiculus AquaMaps Data sources: GBIF OBIS

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Image of Glaucostegus cemiculus (Blackchin guitarfish)

Mauritania country information

Common names: Agharde, Guitarra, Raie requin
Occurrence: native
Salinity: brackish
Abundance: abundant (always seen in some numbers) | Ref: Maigret, J. and B. Ly, 1986
Importance: commercial | Ref: Maigret, J. and B. Ly, 1986
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Very abundant in Banc d'Arguin and Levrier Bay (Ref. 5377). Individual catches measure between 1.2 and 2.0 m in length and weigh between 6 and 20 kg. Fish and fins are sold separately. Fins, the most lucrative parts, are sold as 'shark fins', a delicacy in Asian cuisine. After sun-drying, the fins are exported to Asian markets. Fresh fish flesh has hardly any value until these are processed by salting, drying and smoking. After which the processed flesh is then sold locally or exported to other West African countries like Mali, Burkina Faso, and Sierra Leone. Smoked Rhinobatos is almost entirely exported to the Gulf of Guinea states (Côte d'Ivoire, Ghana, Togo, Benin). Also Ref. 6675, 55783.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mr.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Maigret, J. and B. Ly, 1986
National Database:

Common names from other countries

Poisson-guitare fouisseur, Guitarra barba negra, Raie-guitare fouisseuse, ... more

分类 / Names 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) > Rhinopristiformes (Shovelnose rays) > Glaucostegidae (Giant guitarfishes)

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 9 - 100 m. 亞熱帶的; 42°N - 19°S, 19°W - 38°E (Ref. 114953)

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

Eastern Atlantic: northern Portugal to Angola, including the Mediterranean Sea.
東大西洋: 葡萄牙到安哥拉北部, 包括地中海。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: L_m 158.5, range 153 - 164 cm
Max length : 242 cm TL 雄鱼/尚未辨别雌雄; (Ref. 40637); common length : 150 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3710); 最大体重: 49.9 kg (Ref. 40637)

简单描述检索表 | 型态特徵 | 形态测量图

脊椎骨: 68 - 73. This large to very large species has a plain beige to brownish wedge-shaped disc; long and rather broad triangular snout with a broadly rounded rostral cartilage at its tip and wide oblique nostrils with a narrow anterior opening; disc thickened centrally, length 1.2-1.3 times its width, anterior margins slightly undulate, often weakly concave before broadly rounded outer corner; snout moderately acute, its angle 59-63°, tip narrowly rounded not extended forward as a distinct lobe; large orbit, length 5-6 times in preorbital length, 1.5-2 in interorbital space; rostral ridges are narrowly separated posteriorly and almost joined anteriorly; 2 fleshy spiracular folds, with innermost fold smaller; upper jaw with 62-72 tooth rows; large and oblique nostrils, its length 1.4 in internasal width, ca 81 nasal lamellae, anterior nasal flaps are confined to anterior margin of nostril; rough skin covered entirely with small denticles; well-developed thorns, usually along edge of rostral cartilage and small patches around orbits and above spiracles; each shoulders with 1-3 thorns that persist in adults, a median row of enlarged thorns extending from nape to first dorsal fin, a few thorns between dorsal fin; long tail ca 1.5 times its disc length; dorsal fins are large and widely spaced, ca. 2.1 times base length of first dorsal fin, apices narrowly rounded; pectoral fin radials 68-73; 204-212 total vertebrae (Ref. 114953).
嘴的脊狭窄地分开,几乎加入前面; 前面的鼻叶延伸一点点如果任何的, 后鼻盖狭窄的; 呼吸孔有两个大约相同大小的发展良好的摺层; 在呼吸孔之间,刺眼窝的内缘的周围呈现, 在肩上而且沿着体盘与尾部的中线; 上表皮褐色，腹面白色的, 但是通常在吻上的一个黑色的斑块主要在稚鱼.(参考文献 6675)

A coastal and benthic species found on sandy and muddy bottoms, intertidal zone to at least 80 m depth. Feeds mainly on benthic crustaceans and small fishes. Maximum length would probably reach up to 265 cm TL, common at about 200 cm TL. Males mature at 138-154 cm TL, females at 153-164 cm TL. In the Mediterranean Sea, males mature at smaller size, about 100-110 cm TL and females at about 110 cm TL. Size at birth about 34 cm TL. Produces litters up to 20 pups (more common 6-7 pups) (Ref. 114953). Ovoviviparous, one or two litters per year, of 4-6 embryos.

栖息于沙泥底, 从影像水到大约 100 公尺。慢地游泳于底部之上或部份地埋藏。吃无脊椎动物与鱼类。卵胎生的, 一或二个胎窝每年, 4-6个胚胎。

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). One or two litters per year, of 4-6 embryos (Ref. 6675).東大西洋: 葡萄牙到安哥拉北部, 包括地中海。

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

Bauchot, M.-L., 1987. Raies et autres batoides. p. 845-886. In W. Fischer, M.L. Bauchot and M. Schneider (eds.) Fiches FAO d'identificationpour les besoins de la pêche. (rev. 1). Mèditerranée et mer Noire. Zone de pêche 37. Vol. II. Commission des Communautés Européennes and FAO, Rome. (Ref. 3261)

世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)

极度濒危 (CR) (A2d); Date assessed: 03 December 2018

CITES (Ref. 131153)

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix I & II: Endangered migratory species conserved through agreements

对人类的威胁

无害处的

人类利用

渔业: 低经济; 游钓鱼种: 是的

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Estimates based on models

Preferred temperature (Ref. 115969): 19.2 - 27.9, mean 25.4 (based on 94 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00363 (0.00143 - 0.00920), b=3.09 (2.87 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

营养阶层 (Ref. 69278): 4.0 ±0.70 se; based on food items.

回复力 (Ref. 120179): 非常低的, 最小族群倍增时间超过14 年 (Fec=4).

Fishing Vulnerability (Ref. 59153): High vulnerability (55 of 100).

价格分类 (Ref. 80766): Low.

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