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November 6, 2020BIODIVERSITY JOURNALOpen Access

A new species of genus Psalidodon Eigenmann, 1911relatedto the P. paranae complex (Characiformes Characidae) fromUpper Paranaíba river basin, Brazil, supported by genetic andmorphometric data

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Authors

RARosana de Mesquita AlvesIRIgor Henrique Rodrigues‐OliveiraRPRubens Pasa

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Overview

Phylogenetic and morphometric analysis reveals a distinct endemic clade in Psalidodon fish populations, indicating the presence of a new species.

Key Points

  • Delimit evolutionarily significant units within the Psalidodon aff. paranae species complex to identify potential cryptic species.
  • Sequenced mitochondrial cytochrome b (Cyt b) genes across eight populations of Psalidodon aff. paranae and reconstructed phylogeny via maximum likelihood estimation.
  • Performed canonical variate analysis on geometric morphometric data using 13 anatomical landmarks across the eight populations.
  • Maximum likelihood phylogenetic analysis resolved the populations into two distinct clades, separating a population restricted to a two-kilometer stream from all other groups.
  • Canonical variate analysis revealed complete morphometric structuring between the populations, showing morphospace separation congruent with the genetic tree topology.

Cite This Study

Alves et al. (2020) studied this question.

synapsesocial.com/papers/6aaa556597cfbebff36cb524https://doi.org/10.31396/biodiv.jour.2020.11.4.807.814
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