Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Occurrence of Freshwater Stingrays in the Uatumã River Basin, Amazon Region: A Field Study

Maria Fernanda da Silva Gomes
,
Paulo Henrique Rocha Aride
ORCID logo ,
Maiko Willas Soares Ribeiro
ORCID logo ,
Cristiane Cunha Guimarães
ORCID logo ,
Tiago Cabral Nóbrega
ORCID logo ,
Rayana Melo Paixão
,
Adriene Nuzia de Almeida Santos
,
Adriano Teixeira de Oliveira
* ORCID logo
Version 1 : Received: 5 April 2024 / Approved: 5 April 2024 / Online: 5 April 2024 (11:04:42 CEST)

How to cite: Gomes, M.F.D.S.; Aride, P.H.R.; Ribeiro, M.W.S.; Guimarães, C.C.; Nóbrega, T.C.; Paixão, R.M.; Santos, A.N.D.A.; Oliveira, A.T.D. Occurrence of Freshwater Stingrays in the Uatumã River Basin, Amazon Region: A Field Study. Preprints 2024, 2024040432. https://doi.org/10.20944/preprints202404.0432.v1 Gomes, M.F.D.S.; Aride, P.H.R.; Ribeiro, M.W.S.; Guimarães, C.C.; Nóbrega, T.C.; Paixão, R.M.; Santos, A.N.D.A.; Oliveira, A.T.D. Occurrence of Freshwater Stingrays in the Uatumã River Basin, Amazon Region: A Field Study. Preprints 2024, 2024040432. https://doi.org/10.20944/preprints202404.0432.v1

Abstract

The Amazon region has the most incredible 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, too 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.

Keywords

Biodiversity; Geographic distribution; Potamotrigoníneos

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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