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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Ituglanis: Greek, itys, ityos = circle + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); apteryx: Drived from the Greek a, meaning without, and pteryx, meaning fin, in reference to the absence of pelvic fins in this species.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch. Tropical
South America: Rio Curuá, Rio Xingu basin in Brazil.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 6.7 cm SL mannelijk / geslacht onbekend; (Ref. 95610)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
The lack of pelvic fins, girdle, and muscles separates this species from all congeners, except some of specimens of Ituglanis parahybae. Can be diagnosed from I. parahybae by the following characters: presence of a supraorbital laterosensory canal with pores s1, s3, and s6 (vs. entire supraorbital canal lacking); absence of a posterior cranial fontanel ( vs. presence); six branchiostegal rays (vs. eight); two pair of ribs (vs. six); 43-45 post-Weberian vertebrae (vs. 38); 27 predorsal post-Weberian vertebrae (vs. 22); and presence of an epural (vs. absence) (Ref. 95610).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Datovo, A., 2014. A new species of Ituglanis from Rio Xingu basin, Brazil, and the evolution of pelvic fin loss in trichomycterid catfishes (Teleostei: Siluriformes: Trichomycteridae). Zootaxa 3790(3):466-476. (Ref. 95610)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00279 - 0.01564), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
