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Narcine brasiliensis  (Olfers, 1831)

Brazilian electric ray
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Narcine brasiliensis   AquaMaps   Data sources: GBIF OBIS
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Image of Narcine brasiliensis (Brazilian electric ray)
Narcine brasiliensis
Picture by Randall, J.E.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Torpediniformes (Electric rays) > Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).

环境 / 气候 / 范围 生态学

; 海洋 礁区鱼类; 深度上下限 1 - 43 m (Ref. 13608).    , preferred ?; 37°N - 39°S, 98°W - 34°W

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

Western Atlantic: Espirito Santo, Brazil to northern Argentina (Carvalho, pers. comm.). North Carolina, USA to Florida, northern Gulf of Mexico, central Lesser Antilles and Yucatan (Ref. 26938).

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 28.8  range ? - ? cm
Max length : 54.0 cm WD 雄鱼/尚未辨别雌雄; (Ref. 26340); common length : 35.0 cm WD 雄鱼/尚未辨别雌雄; (Ref. 5217); 最大体重: 650.00 g (Ref. 6902)

简单描述 型态特徵 | 形态测量图

A pale sand-colored ray, often with ellipses of dark spots on dorsal side of rounded disk (Ref. 26938). Grayish to reddish brown, many rounded blotches outlined with blackish spots. Dark bands across tail up to dorsal fin. Snout darkened (Ref. 7251).

生物学特性     字汇 (例如 epibenthic)

Inhabits coastal waters, on sand or mud bottoms (Ref. 26340). Common along sandy shorelines, sometimes near coral reefs (Ref. 12951). Buries itself with only eyes protruding (Ref. 12951). Nocturnal, moves to shallow bays at night to feed; prefers worms, but may take juvenile snake eels, anemones, and, small crustaceans (Ref. 12951). Produces broods of 4 to 15 young (Ref. 26938). Can discharge between 14 and 37 volts. Contact with the skin can produce a severe electric shock. In addition to the main electric organ, this species possesses a bilateral accessory electric organ (Ref. 10011) speculated to have a possible role in social communication (Ref. 10489). Reported to taste good, but not fished commercially. Traded as an aquarium fish at Ceará, Brazil (Ref. 49392).

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

Ovoviviparous. Sex ratio of embryos is about one to one, however, small mothers may have predominantly female embryos and that for a given mother, embryos tend to be of one sex (Ref. 46979). Maximum number of embryos per female may reach 15. The young are capable of giving off electric charges even before they are released from the womb (Ref. 46978).

主要参考文献 Upload your references | 参考文献 | 合作者 : Carvalho, Marcelo | 合作者

Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)

世界自然保护联盟红皮书 (Ref. 115185)

  数据缺失 (DD) 

CITES (Ref. 94142)

Not Evaluated

对人类的威胁

(Ref. 10011)




人类利用

渔业: 自给性渔业; 水族馆: 商业性
FAO(Publication : search) | FisheriesWiki | 周边海洋

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网络资源

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00542 - 0.02024), b=2.90 (2.72 - 3.08), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
营养阶层 (Ref. 69278):  3.2   ±0.4 se; Based on diet studies.
回复力 (Ref. 69278):  低的, 最小族群倍增时间4.5 - 14 年 (Assuming fecundity<100).
脆弱性 (Ref. 59153):  Low to moderate vulnerability (30 of 100) .
价格分类 (Ref. 80766):   Unknown.