Classification / Names
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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
Écologie
; eau douce benthopélagique. Tropical
South America: Rio Curuá, Rio Xingu basin in Brazil.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 6.7 cm SL mâle / non sexé; (Ref. 95610)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
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).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
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Sources 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=0.00661 (0.00282 - 0.01550), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
