Hypopygus ortegai, Ortega's Hypopygus

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Hypopygus ortegai de Santana & Crampton, 2011

Ortega's Hypopygus
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Image of Hypopygus ortegai (Ortega\
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drawing shows typical species in Hypopomidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Gymnotiformes (Knifefishes) > Hypopomidae (Bluntnose knifefishes)
Etymology: Hypopygus: Greek, hypo = under + Greek, pyge = tail (Ref. 45335);  ortegai: The specific epithet, ortegai, is a patronym in honour of the Peruvian ichthyologist Hernán Ortega Torres, for his many contributions to Neotropicalichthyology and for his participation in the expedition that discovered this species (Ref. 88778).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性.

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South America: Hypopygus ortegai is known from small tributaries in the upper Amazon of Peru, near the towns of Iquitos and Jenaro Herrera, Loreto (Ref. 88778).

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 11.4 cm TL 雄鱼/尚未辨别雌雄; (Ref. 88778)

简单描述 型态特徵 | 形态测量图

Hypopygus ortegai is diagnosed from congeners by the following combination of characters: the dorsal rami of intermittent branch of anterior lateral line nerve not visible (versus visible in remain species), the total number of anal-fin rays (137-147 versus 102–135 in H. hoedemani, H. lepturus, and H. minissimus; 155–174 in H. cryptogenes), the presence of the sixth infraorbital bone (versus absence in H. hoedemani, H. lepturus, and H. minissimus), the presence of oblique bands (versus absence in H. minissimus), the presence of scales at midbody (versus absence in H. minissimus), the head length (12.6–13.9% of LEA versus 13.2–15.3 in H. nijsseni), the distance at the nape (11.0–12.5% of LEA versus 12.5–13.8 in H. nijsseni), the distance from the anus to the anal-fin ray (6.5–9.5% of LEA versus 10.0–12.0 in H. neblinae), and the head length (12.6–13.9% of LEA versus 13.2–22.9 in H. isbruckeri) (Ref. 88778).

生物学特性     字汇 (例如 epibenthic)

Electric organ discharge: Data available from eight specimens in type series, from the vicinity of Jenaro Herrera, Loreto, Peru. Hypopygus ortegai generates a tetraphasic EOD ranging in duration from 1.17 to 2.11 ms (mean 1.73, N = 7), and with a PPF ranging from 1.408 to 1.869 kHz (mean 1.661, N = 7). Mean pulse rate during the day ranges from 44.7 to 56.8 Hz (mean 50.3, mean CV 0.91, N = 8), and during the night from 59.2 to 65.5 Hz (mean 62.1, mean CV 2.87, N = 8) (Ref. 88778).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 : Albert, James S. | 合作者

de Santana, C.D. and W.G.R. Crampton, 2011. Phylogenetic interrelationships, taxonomy, and reductive evolution in the Neotropical electric fish genus Hypopygus (Teleostei, Ostariophysi, Gymnotiformes). Zool. J. Linn. Soc. 163:1096-1156. (Ref. 88778)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 24 April 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00145 - 0.00994), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).