Paratrygon parvaspina Loboda, Lasso, Rosa & Carvalho, 2021
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drawing shows typical species in Potamotrygonidae.
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drawing shows typical species in Potamotrygonidae.
Classification / Noms Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
Élasmobranches (requins et raies) (sharks and rays) > Myliobatiformes (Stingrays) > Potamotrygonidae (River stingrays) > Potamotrygoninae
Etymology: Paratrygon: Greek, para in the side of + Greek, trygon = a sting ray (Ref. 45335); parvaspina: Name from Latin 'parvus' meaning small, and 'spina' for spine; referring to the diagnostic reduced caudal sting of this new species; an adjective. feminine. An adjective.
Etymology: Paratrygon: Greek, para in the side of + Greek, trygon = a sting ray (Ref. 45335); parvaspina: Name from Latin 'parvus' meaning small, and 'spina' for spine; referring to the diagnostic reduced caudal sting of this new species; an adjective. feminine. An adjective.
Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie
; eau douce démersal. Tropical
Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri
South America: endemic to the Orinoco basin (n middle portion of the Orinoco River and its main affluents, the Bita and Tomo rivers).
Taille / Poids / Âge
Description synthétique Clés d'identification | Morphologie | Morphométrie
This species is distinguished by the following set of characters: spiracular process extremely short and reduced, slightly more developed in adults, and with few dermal denticles (vs. with large and knob shaped spiracular processes that almost cover the spiracle aperture in aiereba, and with short and straight spiracular process with developed dermal denticles in orinocensis); caudal sting very reduced, with mean of its length 6.2% DW [5.6-7.1% DW] (vs. longer caudal stings in aiereba and orinocensis with means and ranges, respectively, 11.3% DW [3-17.9% DW], and 11.9% DW [6.7-15.3% DW]); tail short, with means of the pre-caudal sting region and the distance between cloaca and tail tip, respectively, 21.1% and 50.4% DW (vs. longer tails in aiereba and orinocensis, with means of the pre-caudal sting region and the distance between cloaca and tail tip, respectively, 23.5% and 87.8% DW in aiereba, and 25.2% and 115.4% DW in orinocensis); anterior disc margin broadly rounded (vs. with well developed and visible concave anterior disc margins, especially the latter in aiereba and orinocensis; spiracles small and quadrangular, with mean length 5.2% DW [4.9-5.8% DW] (vs. larger spiracles with mean length 6% DW [4.4-11.6% DW] in aiereba, and with triangular and slightly smaller spiracles, with mean spiracle length 5.6% DW [4.5-7.9% DW] in orinocensis); rostral projection relatively large (vs. small or minute in aiereba and orinocensis, respectively); preorbital processes more laterally projected, externally exceeding level of nasal capsules (vs. preorbital processes less laterally projected, not exceeding level of nasal capsules in aiereba and orinocensis); lateral stay of synarcual cartilage long, exceeding the lateral level of anterior ventral condyle (vs. short and not exceeding the lateral level of anterior ventral condyle in aiereba and orinocensis); dorsolateral crest of scapular process not pronounced and not exceeding laterally the level of mesocondyle (vs. pronounced dorsolateral crests that laterally exceed the level of mesocondyle in aiereba and orinocensis); propterygium robust (vs. more slender in aiereba and orinocensis); concavity of the internal face of mesopterygium not so pronounced and curved (vs. very pronounced and curved in aiereba and orinocensis); metapterygium robust and highly curved (vs. metapterygium slender and more straight in aiereba and orinocensis) (Ref. 125391).
Cross section: flattened.
Cross section: flattened.
Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Référence principale
Téléchargez vos références | Références | Coordinateur : Carvalho, Marcelo | Collaborateurs
Loboda, T.S., C.A. Lasso, R. de Souza Rosa and M.R. de Carvalho, 2021. Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba. Neotrop. Ichthyol. 19(2). (Ref. 125391)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Vulnérable (VU) (A2cde; B1ab(iii)); Date assessed: 19 September 2024
CITES
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
FAO - Publication: search | FishSource |
Plus d'informations
Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
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Abondance
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Recrutement
Abondance
Cycle de vie
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Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Reproduction
Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Anatomie
Surface branchiale
Cerveau
Otolithe
Surface branchiale
Cerveau
Otolithe
Physiologie
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
Liées à l'homme
Systèmes d'aquaculture
Profils d'aquaculture
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Cas de ciguatera
Timbres, pièces de monnaie, divers
Systèmes d'aquaculture
Profils d'aquaculture
Souches
Cas de ciguatera
Timbres, pièces de monnaie, divers
Outils
E-book | Guide de terrain | Générateur de fréquences de longueur | Outil de dynamique de population | Carte par point |
Capture-MSY |
Articles particuliers
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Sources Internet
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record
Estimations basées sur des modèles
|
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
|
Niveau trophique (Réf. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
|
Vulnérabilité de la pêche (Ref. 59153) |
Moderate vulnerability (43 of 100). 🛈 |