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September 14, 2025

Assessing the population structure of Plagioscion squamosissimus (Teleostei, Perciformes, Sciaenidae) from the São Francisco River, Bahia, Brazil, using body morphology and otolith shape signatures.

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Authors

FFFabiane Letícia de FreitasUniversidade do Estado da BahiaNPNatan Silva PereiraUniversidade do Estado da BahiaPPPatrícia Barros PinheiroUniversidade do Estado da Bahia

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Implication

Analysis reveals distinct population units in Plagioscion squamosissimus, indicating significant implications for management strategies.

Key Points

  • Distinct populations of plagioscion squamosissimus were identified in the São Francisco River, showing adaptation to local environments.
  • The statistical reclassification success ranged from 91% using body morphology to 100% using otolith shape analysis.
  • Significant sexual dimorphism in otolith shape was found, suggesting ecological or reproductive adaptations.
  • Environmental changes caused by hydroelectric plants likely influenced the observed population structure among study sites.

Cite This Study

Freitas et al. (2025) studied this question.

synapsesocial.com/papers/68c6df6933b72be0b5e43c1ahttps://doi.org/10.1111/jfb.70221
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Also Consider

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  3. 3Effects of sex, stock, and environment on the shape of known-age Atlantic cod ( Gadus morhua ) otoliths2004 · 325 citations