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Narcine brasiliensis  (Olfers, 1831)

Brazilian electric ray
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
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.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Torpediniformes (Electric rays) > Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).

環境 / 氣候 / 範圍 生態學

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

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | 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 / 年齡

Maturity: Lm 28.8  range ? - ? cm
Max length : 54.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 26340); common length : 35.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 5217); 最大體重: 650.00 g (Ref. 6902)

簡短描述 型態特徵 | 形態測量圖

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).

生物學特性     字彙 (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 | 產卵場 | 卵 | 孕卵數 | 仔魚

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).

主要參考資料 Upload your references | 參考文獻 | 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)

IUCN 瀕危狀態 (Ref. 115185)

  資料不足 (DD) 

CITES (Ref. 94142)

Not Evaluated

對人類具威脅

(Ref. 10011)




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漁業: 自給性漁業; 水族館: 商業性
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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).
營養階層 (Ref. 69278):  3.2   ±0.4 se; Based on diet studies.
回復力 (Ref. 69278):  低的, 最小族群倍增時間4.5 - 14 年 (Assuming fecundity<100).
瀕危性 (Ref. 59153):  Low to moderate vulnerability (30 of 100) .
價格種類 (Ref. 80766):   Unknown.