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Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Amphiliidae (Loach catfishes)
無棘鯰科 (Loach catfishes) > Doumeinae
Etymology: Doumea: Taken form a locality, Doumé, in Congo (Ref. 45335).
More on author: Pellegrin.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶; 14°N - 4°N
Africa: coastal river basins in Guinea, Liberia and Côte d’Ivoire (Ref. 85844). Also reported from the Corubal in Guinea Bissau (Ref. 85844).
非洲: 幾內亞，賴比瑞亞與象牙海岸; 卡瓦利， Nuon ，聖保羅與 Koumba 河流域。 也已知來自在賴比瑞亞的 Gbin(聖約翰流域) 而且在幾內亞比索已知來自 Corubal 。 (參考文獻 7353)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 11.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 85844)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 8; 臀棘: 0; 臀鰭軟條: 9 - 12. Diagnosis: Doumea chappuisi is distinguished from its congeners, except D. reidi and D. stilicauda, by having the dorsolateral and ventrolateral vertebral processes extending through the skin to form longitudinal bony ridges from the region of the base of adipose fin posteriorly to the caudal-fin base and from slightly posterior of the pelvic-fin origin to the caudal-fin base; exposed processes are in the shape of longitudinal bars with slightly corrugated surfaces that form irregular longitudinal ridges (Ref. 85844). It differs from D. reidi by a shorter caudal-peduncle length, 22-29% of standard length vs. 31%; the posterior extent of the adpressed pelvic fin in specimens over 90 mm standard length falling short of the anterior limit of the anal fin, vs. extending distinctly beyond that point; the anterior extent of the exposed vertebral processes along the ventral surface of the body extending to slightly posterior of pelvic-fin origin, vs. extending to the area lateral to the anal-fin base; and the uniform pigmentation pattern of the dorsal surface of the unbranched rays of the pectoral and pelvic fins, vs. with series of irregular dark spots against a lighter background (Ref. 85844). It differs from D. stilicauda in the longer predorsal length, 32-37% of standard length vs. 27-30%; longer head length, 18% of standard length vs. 15-17%; smaller caudal-peduncle length, 22-29% of standard length vs. 35-41%; and caudal-peduncle depth 7.3-14.5 times in caudal-peduncle length, vs. 19.6-25.8 times (Ref. 85844).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
非洲: 幾內亞，賴比瑞亞與象牙海岸; 卡瓦利， Nuon ，聖保羅與 Koumba 河流域。 也已知來自在賴比瑞亞的 Gbin(聖約翰流域) 而且在幾內亞比索已知來自 Corubal 。 (參考文獻 7353)
Ferraris, C.J., P. Skelton and R.P. Vari, 2010. Species of the Doumea chappuisi complex (Siluriformes, Amphiliidae) with the descriptions of new species from the upper Sanaga River and Nyong River basins. Copeia 2010(4):705-715. (Ref. 85844)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
