Classification / Names
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Siluriformes (Catfishes) >
Doradidae (Thorny catfishes) > Doradinae
Etymology: Nemadoras: Greek, nema, -atos = filament + Greek, dora = skin (Ref. 45335); cristinae: Named for Maria Cristina Sabaj Pérez, teacher at Friends' Central School, Wynnewood, Pennsylvania, for her contributions to the collection of the type series and to the well-being of the senior co-author, videlicet course corrections over paths polished and rough.
Eponymy: Mrs Maria Cristina Sabaj Pérez, is a teacher at Friends’ Central School, Wynnewood, Pennsylvania. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal. Tropical
South America: upper Meta (Orinoco drainage)in Colombia, upper Amazonas circa Iquitos and río Santiago (tributary of Marañon) in Peru; middle Amazonas (Solimões) from mouth of Putumayo/Iça to that of Madeira, Brazil; and Madeira basin from its mouth to rio Madre de Dios in Peru.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 12.4 cm SL mâle / non sexé; (Ref. 96153)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 6. Nemadoras cristinae differs from all congeners by the possession of the following characters: 3-9 premaxillary teeth in approximately two rows in juveniles and adults; outermost teeth weakly spatulate and innermost more acicular (vs. premaxillary edentulous in adults of all congeners and limited to 1-6 acicular teeth in juveniles of N. elongatus, N. humeralis, N. leporhinus and N. ternetzi); and mental barbels with extremely elongate (filiform) papillae, length of longest about 4-7 times its width at base (vs. papillae shorter, length of longest <3 times its width at base). It can be further differentiated from very similar species N. leporhinus, by having shaft and primary fimbriae of maxillary barbel smooth (vs. outer margin of shaft and margins of primary fimbriae with distinct secondary fimbriae) (Ref. 96153).
Occurs in the main channels of whitewater (sediment rich) rivers. Collected using gill nets, bottom trawls to depths of 0.6-13.9 m, and long floating nets pulled by canoe in the main channels of large rivers. Feeds on larval insects (Ref. 96153).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Sabaj Pérez, M.H., H. Mariangeles Arce, L.M. Sousa and J.L.O. Birindelli, 2014. Nemadoras cristinae, a new species of thorny catfish (Siluriformes: Doradidae) with redescription of its congeners. Proc. Acad. Nat. Sci. Philadelphia 163(1):133-178. (Ref. 96153)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00660 - 0.03472), 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): 2.8 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
