分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Torpediniformes (Electric rays)
電鰩目 (Electric rays) >
Narcinidae (Numbfishes)
雙鰭電鰩科 (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).
More on authors: Jordan & Starks.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 深度上下限 1 - 100 m (Ref. 96339). 熱帶; 32°N - 7°S, 115°W - 78°W (Ref. 114953)
Eastern Pacific: Gulf of California to northern Peru.
東太平洋: 加州灣到祕魯。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 119 cm TL 雄魚/尚未辨別雌雄; (Ref. 111131)
Found in shallow water on sandy bottoms, sometimes adjacent to reefs (Ref. 12951). Found buried in the sand during the day (Ref. 12951). Moves into shallow bays at night to feed; prefers polychaete worms, but may take sea squirts (Ref. 12951). Produces litters of up to 15 pups. Maturity size of males at ca. 36 cm TL; birth size at ca. 11 cm TL (Ref. 114953).
發現於在砂質底部上的淺水區了, 有時鄰近礁.(參考文獻 12951) 發現埋藏在砂中在白天期間.(參考文獻 12951) 移入淺灣在晚上覓食; 偏愛多毛類的蠕蟲, 但是可能吃海椿象.(參考文獻 12951)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
東太平洋: 加州灣到祕魯。
McEachran, J.D., 1995. Narcinidae. Rayas eléctricas. p. 769-771. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para los Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9259)
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Estimates based on models
Preferred temperature (Ref.
123201): 18.5 - 28.9, mean 25.8 °C (based on 82 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00719 - 0.02203), b=2.90 (2.74 - 3.06), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.18 se; based on food items.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (71 of 100).
