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Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Doumeinae
Etymology: Doumea: Taken form a locality, Doumé, in Congo (Ref. 45335); stilicauda: The species name, stilicauda, from the Latin stilus, a stake, and cauda, tail, refers to the stake-like caudal peduncle; treated as a noun (Ref. 85844).
More on authors: Ferraris, Skelton & Vari.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt gần đáy. Tropical
Africa: only known from the So'o River, a tributary of the Nyong River, in Cameroon (Ref. 85844).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 17.5 cm SL con đực/không giới tính; (Ref. 85844)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 7; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 8 - 10. Diagnosis: Doumea stilicauda is distinguished from all its congeners, except D. chappuisi and D. reidi, by having the dorsolateral and ventrolateral vertebral processes extending through the dermis to form longitudinal bony ridges from slightly anterior to the base of the adipose fin posteriorly to the caudal-fin base and from somewhat anterior of the anal-fin origin to the caudal-fin base; the exposed processes are in shape of longitudinal bars with slightly corrugated surfaces that together form irregular longitudinal ridges (Ref. 85844). Doumea stilicauda differs from D. chappuisi in predorsal length 27-30% of standard length, vs. 32-37%; head length 15-17% of standard length, vs. 19-23%; caudal-peduncle length 35-41% of standard length, vs. 22-29%; and caudal-peduncle depth 19.6-25.8 times in caudal-peduncle length, vs. 7.3-14.5 times (Ref. 85844). Doumea stilicauda differs from D. reidi in predorsal length 27-30% of standard length, vs. 33%; head length 15-17% of standard length, vs. 18%; caudal-peduncle length 35-41% of standard length, vs. 22-29%); and caudal-peduncle depth 19.6-25.8 times in caudal-peduncle length, vs. 11.8 times (Ref. 85844).
It is found in a 'blackwater' rainforest system with low pH waters, its mean pH 6.2 (Ref. 85844).
Life cycle and mating behavior
Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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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).
Mức dinh dưỡng (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
