Promising chemical barrier substance applied to ichthyofauna in hydroelectric plants

Autores

  • Wllyane Silva Figueiredo PhD Student in Environmental Sciences, UnB
  • Tania Machado da Silva PhD Student in Environmental Sciences, UnB
  • Luiz Fabrício Zara PhD Professor, UnB

DOI:

https://doi.org/10.17271/1980082717420213048

Palavras-chave:

Imprisoned fish. Fish repulsion. Alarm substances.

Resumo

In hydroelectric plants, there are, on a regular or untimely basis, shutdowns of the generating units in order to carry out some maneuvers for tests and mechanical maintenance. The low operating flow increases the probability of accumulation of ichthyofauna in the draft tube. As a result, the variables that determine the quality of water can change, which requires a broad and coordinated human effort to rescue trapped fish. In addition to the risks related to work safety, there are large economic liabilities as a result of the downtime of the generating units. To minimize this problem, it is necessary to improve techniques for repelling fish from risk areas. The detection of chemical substances in water is one of the most efficient methods of communication between fish. Thus, this study presents a brief review of alarm substances, which are released by the fish epidermis as a sign of defensive response to a dangerous situation and are promising for use as a chemical barrier in the hydroelectric sector.

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Publicado

2021-12-26

Como Citar

Figueiredo, W. S. ., Silva, T. M. da ., & Zara, L. F. . (2021). Promising chemical barrier substance applied to ichthyofauna in hydroelectric plants. Periódico Eletrônico Fórum Ambiental Da Alta Paulista, 17(4). https://doi.org/10.17271/1980082717420213048