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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); minus: The name 'minus', in reference to the English word, mine, alludes to the mining activities common in the portion of the Province of Catamarca where the species was captured..
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; air tawar dasar (demersal); kisaran kedalaman ? - 1 m (Ref. 94174). Subtropical
South America: Río Cuevas in Argentina.
Size / Weight / umur
Maturity: Lm ? range ? - ? cm
Max length : 7.5 cm SL jantan/; (Ref. 94174)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 11 - 14; vertebrata, bertulang belakang: 36. Diagnosed from other species of Trichomycterus , except T. alterus, T. aguarague , T.belensis , T. boylei, and T. ramosus, by having 3 supraorbital pore, discontinuous supraorbital canal, expanded supraorbital tendon bone, and the premaxilla equal in size to, or smaller than, the maxilla. Can be separted from these five species by the following characters: non-enlarged base of the maxillary barbel, thick rugose layer of fatty tissue on the head and body absent; and integument on the surface of the interopercle not covering the odontodes. Can be further differentiated from T. alterus in the only slightly compressed caudal peduncle, presence of dark pigmentation on the area of the body anteroventral to the dorsal-fin origin not covering the odontodes, and the profile of the head from a dorsal view which is not much wider posteriorly than anteriorly; from T. aguarague in having four or five premaxillary tooth rows; from T. belensis in the uniformly brown pigmentation on the body and the lack of dark pigmentation on the basal portions of the caudal-fin rays; from T. boylei in the profile of the head from a dorsal view which is not much wider posteriorly than anteriorly; and from T. ramosus in the distally unbranched barbels of variable width along their length (Ref. 94174).
Found in a small, silt-laden stream with 0.2 to 1.0 m depth, 1.0 to 2.5 m width over a sand and rock bottom without aquatic vegetation, flow rate 0.037m3/s, conductivity 0.614 mS/ cm, turbidity 10, dissolved oxygen 4.96 mg/l, and temperature 20°C. Hides under rocks. Feeds on autochthonous benthic macroinvertebrates (dipteran larvae and Ephemeroptera) (Ref. 94174)
Life cycle and mating behavior
Maturities | Reproduksi, perkembang biakan | Spawnings | Egg(s) | Fecundities | Larva
Fernández, L. and R.P. Vari, 2012. New species of Trichomycterus (Teleostei: Siluriformes) from the Andean Cordillera of Argentina and the second record of the genus in thermal waters. Copeia 2012(4):631-636. (Ref. 94174)
Status IUCN Red List (Ref. 130435)
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
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=0.00977 (0.00319 - 0.02993), b=3.02 (2.77 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
