Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
Abstract The genus Paratrygon, currently recognized as the sole monotypic genus of the family Potamotrygonidae, has a considerably greater diversity than previously indicated, including molecular studies, which supported P. aiereba (hitherto the only recognized species in the genus) as a possible sp...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2021-06-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000200202&tlng=en |
| _version_ | 1819284959274205184 |
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| author | Thiago Silva Loboda Carlos A. Lasso Ricardo de Souza Rosa Marcelo Rodrigues de Carvalho |
| author_facet | Thiago Silva Loboda Carlos A. Lasso Ricardo de Souza Rosa Marcelo Rodrigues de Carvalho |
| author_sort | Thiago Silva Loboda |
| collection | DOAJ |
| description | Abstract The genus Paratrygon, currently recognized as the sole monotypic genus of the family Potamotrygonidae, has a considerably greater diversity than previously indicated, including molecular studies, which supported P. aiereba (hitherto the only recognized species in the genus) as a possible species complex. Here we describe two new species of the genus that are both endemic to and sympatric in the Orinoco basin. Paratrygon aiereba, type species of the genus, is now restricted to the Amazon basin. Both new species are identified and defined through morphological characters such as coloration, dermal denticle morphology, arrangement of thorns, distribution and morphology of ventral lateral line canals, morphology of skeletal elements, and morphometrics. An extensive comparison of these characters between the new species herein described and P. aiereba is presented. Finally, a taxonomic reappraisal of P. aiereba is provided through a revision of preserved material and its original description, plus new evidence about its type-locatity, collectors, and a reconsideration of the destination of its type-specimen. |
| first_indexed | 2024-12-24T01:55:39Z |
| format | Article |
| id | doaj.art-999292b7ccab4218a97937b2ab85182d |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-24T01:55:39Z |
| publishDate | 2021-06-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-999292b7ccab4218a97937b2ab85182d2022-12-21T17:21:36ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242021-06-0119210.1590/1982-0224-2020-0083Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aierebaThiago Silva Lobodahttps://orcid.org/0000-0003-4212-7889Carlos A. Lassohttps://orcid.org/0000-0003-3927-8109Ricardo de Souza Rosahttps://orcid.org/0000-0002-4289-2241Marcelo Rodrigues de Carvalhohttps://orcid.org/0000-0002-3132-4425Abstract The genus Paratrygon, currently recognized as the sole monotypic genus of the family Potamotrygonidae, has a considerably greater diversity than previously indicated, including molecular studies, which supported P. aiereba (hitherto the only recognized species in the genus) as a possible species complex. Here we describe two new species of the genus that are both endemic to and sympatric in the Orinoco basin. Paratrygon aiereba, type species of the genus, is now restricted to the Amazon basin. Both new species are identified and defined through morphological characters such as coloration, dermal denticle morphology, arrangement of thorns, distribution and morphology of ventral lateral line canals, morphology of skeletal elements, and morphometrics. An extensive comparison of these characters between the new species herein described and P. aiereba is presented. Finally, a taxonomic reappraisal of P. aiereba is provided through a revision of preserved material and its original description, plus new evidence about its type-locatity, collectors, and a reconsideration of the destination of its type-specimen.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000200202&tlng=enAmazon basinBatoideaFreshwater StingraysMorphologyMyliobatiformes |
| spellingShingle | Thiago Silva Loboda Carlos A. Lasso Ricardo de Souza Rosa Marcelo Rodrigues de Carvalho Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba Neotropical Ichthyology Amazon basin Batoidea Freshwater Stingrays Morphology Myliobatiformes |
| title | Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba |
| title_full | Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba |
| title_fullStr | Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba |
| title_full_unstemmed | Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba |
| title_short | Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba |
| title_sort | two new species of freshwater stingrays of the genus paratrygon chondrichthyes potamotrygonidae from the orinoco basin with comments on the taxonomy of paratrygon aiereba |
| topic | Amazon basin Batoidea Freshwater Stingrays Morphology Myliobatiformes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000200202&tlng=en |
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