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Gymnotus jonasi Albert & Crampton, 2001

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drawing shows typical species in Gymnotidae.

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Teleostei > Gymnotiformes (Knifefishes) > Gymnotidae (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 生态学

; 淡水 底中水层性. 亞熱帶的

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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 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 13.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 41292); 最大体重: 4.00 g (Ref. 41292)

简单描述 检索表 | 型态特徵 | 形态测量图

Electric organs present.
有发电器。

生物学特性     字汇 (例如 epibenthic)

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).

记录自在 Tefe 区域的白水洪泛区中的漂浮草地的根团了在哪里它是普遍虽然零碎的在分布中。 成鱼在草地繁殖并且觅食而且从不在其他的洪泛区栖息地被见到例如被水淹没的森林。 两者的稚鱼与成鱼吃小的水生动物, 尤其宝刀鱼仔鱼.(参考文献 41292)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

南美洲: 在 Tefe ， Amazonas 巴西附近的 Mamiraua 湖系統。

主要参考文献 Upload your references | 参考文献 | 合作者 : Campos-da-Paz, Ricardo | 合作者

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)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
营养阶层 (Ref. 69278):  2.5   ±0.50 se; based on food items.
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).