分类 / Names
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Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); durbinae: Named for Marion Durbin Ellis (née Marion Lee Durbin) (born 1887, deceased apparently in 1972), Carl Eigenmann´s student and latter a limnologist and environmental toxicologist working at the University of Missouri in Columbia, who devoted herself diligently into the most comprehensive study on Hemigrammus so far. A genitive noun.
Eponymy: Marion Lee Ellis née Durbin (1887–1972) was an American ichthyologist, entomologist, limnologist and environmental toxicologist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Amazon basin at the middle and upper portions of the rio Madeira, lower rio Purus, middle rio Solimões/Amazonas, and lower rio Tapajós in Brazil; rio Paraguai basin in Brazil and Paraguay; and from the rio Paraná basin in Paraguay.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 2.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 101340)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 10 - 11; 臀鳍软条: 20 - 25; 脊椎骨: 32 - 34. Hemigrammus durbinae can be diagnosed from most congeners, except H. marginatus, by lacking a conspicuous humeral spot and by having two dark patches of pigmentation on caudal-fin lobes. It differs from H. marginatus by having two conspicuous patches of dark pigmentation occupying most of the caudal-fin lobes, except the tips, which are hyaline (vs. relatively faint dark pigmentation along caudal-fin distal portion, tips of caudal fin dark) and by having two dark narrow stripes along anal-fin base, the first sub-parallel to anal-fin base, extending approximately along region where hypaxial musculature and the muscles of anal fin meet, and the second along anal-fin base (vs. only an inconspicuous dark stripe along anal-fin base present). Other characters useful to differentiate it from H. marginatus include the following: 5-8 pored lateral line scales (vs. 8-14); upper jaw length 32.1-41.6% in head length (vs. 42.3-46.0%); length of dorsal-fin base 9.9-13.1% of SL (vs.13.6-15.1% of SL); length of dorsal-fin length 22.7-27.1% of SL (vs. 27.6-32.6% of SL); and distance from eye to dorsal-fin origin 38.7-45.9% of SL (vs. 34.6-37.8% of SL) (Ref. 101340).
Found in large floodplain lakes. Stomach contents were composed mainly of terrestrial insects (Ref. 101340).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ota, R.P., F.C.T. Lima and C.S. Pavanelli, 2015. A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the centran and western Amazon and rio Paraná-Paraguai basins. Zootaxa 3948(2):218-232. (Ref. 101340)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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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=0.00955 (0.00428 - 0.02132), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
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).
