分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Gymnotidae (Naked-back knifefishes)
裸背電鰻科 (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); jonasi: Named in honor of Jonas Alves de Oliveira, a Brazilian naturalist working for the Mamirauá Sustainable Development Reserve (Ref. 41292).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 亞熱帶的
South America: Amazon River basin, Brazil.
南美洲: 在 Tefe ， Amazonas 巴西附近的 Mamiraua 湖系統。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 13.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 41292); 最大體重: 4.00 g (Ref. 41292)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Electric organs present.
有發電器。
Facultative air-breathing in the genus (Ref. 126274); Recorded from root mass of floating meadows in the whitewater floodplains of the Tefé region where it is common although patchy in distribution. Adults both breed and forage in the meadows and are never encountered in other floodplain habitats such as flooded forests. Both juveniles and adults feed on small aquatic animals, especially chironomid larvae (Ref. 41292).
記錄自在 Tefe 區域的白水洪泛區中的漂浮草地的根團了在那裡它是普遍雖然零碎的在分布中。 成魚在草地繁殖並且覓食而且從不在其他的洪泛區棲息地被見到例如被水淹沒的森林。 兩者的稚魚與成魚吃小的水生動物, 尤其寶刀魚仔魚.(參考文獻 41292)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 在 Tefe ， Amazonas 巴西附近的 Mamiraua 湖系統。
Albert, J.S. and W.G.R. Crampton, 2001. Five new species of Gymnotus (Teleostei: Gymnotiformes) from an upper Amazon floodplain, with descriptions of electric organ discharges and ecology. Ichthyol. Explor. Freshwat. 12(3):241-266. (Ref. 41292)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.5 ±0.50 se; based on food items.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
