Occurrence of Four Freshwater Stingrays (Chondrichthyes: Potamotrygoninae) in the Uatumã River Basin, Amazon Region: A Field Study

The Amazon region has the largest diversity of freshwater stingrays; however, there are still places where information about this group is scarce. The present work aims to record the occurrence of freshwater stingrays in the Uatumã river basin, Amazonas, Brazil. For this, collections were carried ou...

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Bibliographic Details
Published in:Fishes 2024-05, Vol.9 (5), p.186
Main Authors: Gomes, Maria Fernanda S., Aride, Paulo Henrique R., Ribeiro, Maiko Willas S., Guimarães, Cristiane C., Nóbrega, Tiago C., Paixão, Rayana M., Santos, Adriene Núzia A., de Oliveira, Adriano Teixeira
Format: Article
Language:English
Subjects:
Amazonian
biodiversity
Biometrics
Brazil
Collections
Dasyatidae
Distribution
Environmental aspects
Fishing
Fresh water
Freshwater
geographic distribution
Hydroelectric plants
Hydrology
Identification and classification
Inland water environment
Marine fishes
Physiology
Potamotrigoníneos
Rays (Fishes)
River basins
Rivers
Spines
Stingrays
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Summary:The Amazon region has the largest diversity of freshwater stingrays; however, there are still places where information about this group is scarce. The present work aims to record the occurrence of freshwater stingrays in the Uatumã river basin, Amazonas, Brazil. For this, collections were carried out in three municipalities bathed by the Uatumã River, Presidente Figueiredo, Itapiranga, and São Sebastião do Uatumã. The rays were collected through fishing using a hand net and, after capture, were identified through the pattern of the dorsal and ventral color of the disc, the absence or presence of the labial groove, and the organization of the row of spines on the tail, and were also measured, weighed, and sexed. In total, 69 specimens of Potamotrygonines were captured, 59 of which were from the genus Potamotrygon and ten individuals from the genus Paratrygon. The present study provides preliminary information on the characteristics of freshwater stingray species that may occur in the Uatumã River. Furthermore, new research is necessary to improve the identification of specimens to determine the diversity and elucidate aspects related to the biology of elasmobranchs in the Uatumã River Basin, Brazil.
ISSN:2410-3888
2410-3888
DOI:10.3390/fishes9050186