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Article

Repulsive Effect of Stroboscopic Light Barriers on Native Salmonid (Salmo trutta) and Cyprinid (Pseudochondrostoma duriense and Luciobarbus bocagei) Species of Iberia

1
CITAB, Centre for the Research and Tecnhology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, Quinta dos Prados, 5000-911 Vila-Real, Portugal
2
OriginAL Solutions, Estrada do Cando, Casa da Fraga, 5400-010 Chaves, Portugal
3
Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(5), 1332; https://doi.org/10.3390/su11051332
Received: 30 December 2018 / Revised: 24 February 2019 / Accepted: 27 February 2019 / Published: 4 March 2019
A repulsive effect, that some induced primary stimuli, like sound and light, is known to be provoked in fish behavior. In the present study, two strobe light frequencies, 350 flashes/minute and 600 flashes/minute, were tested in laboratorial conditions, using three native freshwater fish species of northern Portugal: Brown trout (Salmo trutta), Northern straight-mouth nase (Pseudochondrostoma duriense) and Iberian barbel (Luciobarbus bocagei). The results showed a differential repulsive behavior of the fish species to light stimulus, and particularly to a frequency of 600 flashes/minute. S. trutta presented the most repulsive behavior, whereas the L. bocagei showed less repulsion to the light stimulus. No relevant differences were found between pre-test and post-assessments, confirming a rapid recovery of natural fish behavior after the deterrent effect. The results highlighted the potential of behavioral barriers, particularly in salmonid streams, based on strobe light stimulus. View Full-Text
Keywords: underwater light; behavioral barriers; brown trout; endemic cyprinids; deterrent effect underwater light; behavioral barriers; brown trout; endemic cyprinids; deterrent effect
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MDPI and ACS Style

Jesus, J.; Teixeira, A.; Natário, S.; Cortes, R. Repulsive Effect of Stroboscopic Light Barriers on Native Salmonid (Salmo trutta) and Cyprinid (Pseudochondrostoma duriense and Luciobarbus bocagei) Species of Iberia. Sustainability 2019, 11, 1332. https://doi.org/10.3390/su11051332

AMA Style

Jesus J, Teixeira A, Natário S, Cortes R. Repulsive Effect of Stroboscopic Light Barriers on Native Salmonid (Salmo trutta) and Cyprinid (Pseudochondrostoma duriense and Luciobarbus bocagei) Species of Iberia. Sustainability. 2019; 11(5):1332. https://doi.org/10.3390/su11051332

Chicago/Turabian Style

Jesus, Joaquim, Amílcar Teixeira, Silvestre Natário, and Rui Cortes. 2019. "Repulsive Effect of Stroboscopic Light Barriers on Native Salmonid (Salmo trutta) and Cyprinid (Pseudochondrostoma duriense and Luciobarbus bocagei) Species of Iberia" Sustainability 11, no. 5: 1332. https://doi.org/10.3390/su11051332

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