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

Author

Listed:
  • Joaquim Jesus

    (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
    OriginAL Solutions, Estrada do Cando, Casa da Fraga, 5400-010 Chaves, Portugal)

  • Amílcar Teixeira

    (Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal)

  • Silvestre Natário

    (OriginAL Solutions, Estrada do Cando, Casa da Fraga, 5400-010 Chaves, Portugal)

  • Rui Cortes

    (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)

Abstract

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.

Suggested Citation

  • Joaquim Jesus & Amílcar Teixeira & Silvestre Natário & 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, MDPI, vol. 11(5), pages 1-11, March.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:5:p:1332-:d:210687
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