A New Potential Invader: First Record of the Pirambeba Serrasalmus geryi (Characiformes: Serrasalmidae) in the upper Paraná River floodplain, Brazil

Detecting a potentially invasive introduced species is crucial for efficient conservation strategies. We recorded the first occurrences of the “pirambeba” Serrasalmus geryi in the upper Paraná River floodplain, Brazil, in December 2019. A long-term ecological research program (PELD site 6) has been...

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Bibliographic Details
Published in:Journal of ichthyology 2021-03, Vol.61 (2), p.190-195
Main Authors: Deprá, G. C., Oliveira, A. G., Silva, A. B., Frota, A., Proença, H. C., Message, H. J., dos Reis, R. B., Ota, R. R.
Format: Article
Language:English
Subjects:
Animal morphology
Biomedical and Life Sciences
Biometry
Congeners
Floodplains
Indigenous species
Introduced species
Invasive species
Length
Life Sciences
Native organisms
New records
Research programmes
Rivers
Scriptaphyosemion geryi
Serrasalmus geryi
Synergism
Tributaries
Zoology
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Summary:Detecting a potentially invasive introduced species is crucial for efficient conservation strategies. We recorded the first occurrences of the “pirambeba” Serrasalmus geryi in the upper Paraná River floodplain, Brazil, in December 2019. A long-term ecological research program (PELD site 6) has been monitoring the region since 1986. One specimen was collected in the Itaipu Reservoir (106.2 mm standard length ( SL )) and two other in the Ivinhema River, a tributary of Paraná River (167.1–183.0 mm SL ). Previous studies have reported an agonistic interaction between two syntopic congeners in the upper Paraná River floodplain, namely S. maculatus (native) and S. marginatus (invasive), with resulting decrease in the abundance of the native species. Here, we warn that the introduction of S. geryi may act in synergism, aggravating this trend, although little is known about the behavior of S. geryi .
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945221020041