Paratrygon parvaspina

Paratrygon parvaspina Loboda, Lasso, Rosa & Carvalho, 2021

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Image of Paratrygon parvaspina
No image available for this species;
drawing shows typical species in Potamotrygonidae.

Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (hajar och rockor) (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.

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

; sötvatten bottenlevande. Tropical

Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri

South America: endemic to the Orinoco basin (n middle portion of the Orinoco River and its main affluents, the Bita and Tomo rivers).

Storlek / Vikt / Ålder

Könsmognad: Lm ?  range ? - ? cm
Max length : 54.3 cm WD hane/ej könsbestämd; (Ref. 125391)

Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri

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.

Biologi     Ordlista (t.ex. epibenthic)

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

Huvudreferens Ladda upp dina referenser | referenser | Koordinator : Carvalho, Marcelo | Medarbetare

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)

Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))

  Sårbar (VU) (A2cde; B1ab(iii)); Date assessed: 19 September 2024

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless





Mänskliga användningsområden

FAO - Publication: search | FishSource |

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Verktyg

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Särskilda rapporter

Kontrollera för underhåll av akvarium | Kontrollera om det finns faktablad om arter | Kontrollera om det finns faktablad om vattenbruk

Ladda ner XML

Sammanfattande sida | Punktdata | Populärnamn | foton

Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | 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 | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoologiskt register

Uppskattningar baserade på modeller

Index för fylogenetisk mångfald
(Ref. 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).
Trofisk nivå
(Ref. 69278) 		3.2   ±0.4 se; based on size and trophs of closest relatives
Sårbarhet i fisket
(Ref. 59153) 		Moderate vulnerability (43 of 100). 🛈