Sublethal effects of propiconazole on the metabolism of lambari Deuterodon iguape (Eigenmann 1907), a native species from Brazil

Author(s)

Henriques, Marcelo Barbosa ^[1] ; Rezende, Karina Fernandes Oliveira ^[2] ; Castilho-Barros, Leonardo ^[1] ; Barbieri, Edison ^[3]

Affiliation

^[1] Inst Pesca Governo Estado Sao Paulo, Av Bartolomeu de Gusmao 192, BR-11030906 Santos, SP - Brazil

^[2] Univ Sao Paulo, Inst Ciencias Biomed, Dept Biol Celular & Desenvolvimento, Av Prof Lineu Prestes 1524, BR-05508000 Sao Paulo, SP - Brazil

^[3] Inst Pesca Governo Estado Sao Paulo, Av Prof Wladimir Besnard S-N, BR-11990000 Cananeia, SP - Brazil

• Document type: Journal article
• Source: FISH PHYSIOLOGY AND BIOCHEMISTRY; v. 47, n. 4, p. 1165-1177, AUG 2021.
• Web of Science Citations: 1

Abstract

The objective of this study was to analyze the sublethal effects of propiconazole on Deuterodon iguape, a native fish common in Brazil, which has potential for aquaculture and use as a bioindicator. The hypothesis was to test whether D. iguape has a metabolism similar to Danio rerio so that its use in bioassays may be validated. Lethal concentration (LC50) and metabolic rates were studied in fish exposed to propiconazole. Specific oxygen consumption and ammonia excretion for D. iguape and D. rerio increased by 0.01 mu g L-1 and then decreased as the propiconazole concentration increased. The decrease in the averages of specific oxygen consumption at the concentration of 0.1 mu g L-1 represented a reduction in the metabolic rate compared to the control of 71% for D. iguape and 40% D. rerio. For the ammonia excretion, at the same concentration, there was a reduction of 68.7% and 45.4% for D. iguape and D. rerio, respectively. When comparing ammonia excretion of the two species for each concentration of propiconazole, there was a significant difference (p < 0.05) in relation to the control and for the highest concentration (0.1 mu g L-1). As for specific oxygen consumption, there was a statistically significant difference only for the concentration of 0.1 mu g L-1. D. iguape proved to be a good and useful bioindicator for ichthyologists or ecologists in studies of moderate pesticide contamination in freshwater aquatic environments, as its metabolic response was similar to D. rerio. (AU)

• FAPESP's process: 18/19747-2 - Lambari fish Deuterodon iguape Eigenmann, 1907 as an alternative native species for aquaculture in protected areas
• Grantee: Marcelo Barbosa Henriques
• Support Opportunities: Regular Research Grants