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January 1, 2025Neotropical IchthyologyOpen Access

Description of a new species of glass knifefish genus Eigenmannia (Gymnotiformes: Sternopygidae) from the rio Negro basin, Brazil

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Authors

MUMaria Isabela Moreira UliamHRHelena Paulino Amorim RibeiroGDGuilherme Moreira Dutra

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Overview

New species of Eigenmannia shows significant genetic divergence in Rio Negro basin, indicating unique evolutionary lineage.

Key Points

  • This research aims to describe a new species of Eigenmannia from the Rio Negro basin based on morphological and molecular characteristics.
  • Described a new species using morphological and molecular datasets.
  • Conducted various molecular species delimitation analyses (ASAP, PTP, bPTP).
  • Collected cytochrome oxidase I gene sequences from four samples.
  • The new species was identified as a unique molecular operational taxonomical unit.
  • Significant genetic divergence from congeners ranged from 8.7 to 17.3%.
  • Three MOTUs were estimated for this lineage based on bPTP analysis.

Cite This Study

Uliam et al. (2025) studied this question.

synapsesocial.com/papers/69255731c0ce034ddc35a9eehttps://doi.org/10.1590/1982-0224-2025-0004
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Integrative taxonomy reveals a new species of the glass knifefish genus <scp><i>Eigenmannia</i></scp> Jordan &amp; Evermann, 1896 (Teleostei: Gymnotiformes: Sternopygidae) from the Rio Branco basin, Brazil2024 · 6 citations
  2. 2A new species of genus Psalidodon Eigenmann, 1911relatedto the P. paranae complex (Characiformes Characidae) fromUpper Paranaíba river basin, Brazil, supported by genetic andmorphometric data2020 · 6 citations
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  4. 4DNA barcoding reveals taxonomic uncertainties and cryptic lineages of fish from the Mearim River basin, Maranhão, Brazil2026 · 1 citations
  5. 5A new species of Mesonauta (Cichliformes: Cichlinae) from the Amapá Grande River basin, Northern Brazil2025