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) >
Apteronotidae (Ghost knifefishes)
無背魚科 (Ghost knifefishes) > Apteronotinae
Etymology: Porotergus: Greek, poros = porous + Latin, tergum = back, the upper plate or segment in an animal (Ref. 45335); duende: The specific epithet, duende, is the Portuguese for elf or imp, referring to the diminutive size of P. duende. A noun in apposition. Gender masculine..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; pH range: 6.9 - 7.3. 27°C - 32°C (Ref. 83661)
Known from the main channel of the Amazon River in the western portions of the Amazon basin (Rio Negro and Rio Solimões in Brazil, Rio Ucayali in Peru.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 18.4 cm TL 雄魚/尚未辨別雌雄; (Ref. 83661); 10.4 cm TL (female)
簡短描述
型態特徵 | 形態測量圖
臀鰭軟條: 124 - 142. This species is distinguished from its congeners by the following characted: presence of a light brown body pigmentation (vs. pale straw pigmentation in P. gimbeli, and dark brown in P. gymnotus); one row of conical teeth on the dentary (vs. two); edentulous premaxilla (vs. presence of teeth); ossified second basibranchial (vs. unossified in P. gimbeli, condition unknown in P. gymnotus). It further differs from P. gimbeli by the absence of a distinct swelling on the chin (vs. presence of this structure), the total anal-fin rays (124-142 vs. 171–198), and the prepectoral-fin distance (14.1-17.0% of LEA vs. 10.3-13.5); from P. gymnotus by the distance from the posterior naris to the eye (1.7-3.8% of HL vs. 8.2-11.9), mouth length (12.4-27.4% of HL vs. 28.1-38.7), pectoral-fin length (72.7-89.0% of HL vs. 60.4-70.7) (Ref. 83661).
This species is known mainly from the main channels of large whitewater rivers such as the Rio Solimões(Amazon) and Río Ucayali. In the Tefé region, it was encountered only during the rising water period in January and February, and captured in waters of 2–4 m depth on beaches of alluvial silt and fine sand. Based on examined stomachs of four specimens, this species feeds exclusively on small, autochthonous, benthic insect larvae (of micro-caddis fly, biting midge and beetle). Most specimens had loose sand grains in the stomach (larger than the grains of sand in the caddis fly jackets), suggesting foraging on sandy substrates; one stomach contained many endoparasitic nematodes. All four specimens captured in the Tefé region had maturing, but not fully mature, gonads, suggesting that spawning occur during the rising water period, typical of riverine apteronotids (Ref. 83661).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
de Santana, C. D. and G. R. Crampton, 2010. A review of the South American electric fish genus Porotergus (Gymnotiformes: Apteronotidae) with the description of a new species. Copeia 2010(1):165-175. (Ref. 83661)
人類使用
更多資訊
俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00145 - 0.00871), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
