Abstract :
[en] Different studies suggest some social calls could be used in fish identification if their
specificity is unambiguously assessed. Sounds of different populations of piranhas
Serrasalmus maculatus Kner, 1858 were recorded to determine their homogeneity
between rivers inside a single basin (Araguari and Grande River, upper Paraná River
basin) and between separated basins (Amazon and Paraná basins). All fish from the
different populations produced sounds with similar acoustic features. Consequently,
the populations were not discernible based on individual sound characteristics. This
high homogeneity between sounds from different populations indicates their usefulness for conservation projects using passive acoustic monitoring in piranhas. Moreover, it supports the use of acoustic features as complementary key characteristics in
taxonomic studies.
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