Metabolic effects of trichlorfon (Masoten (R)) on the neotropical freshwater fish pacu (Piaractus mesopotamicus)


Autoria(s): Venturini, Francine P.; Moraes, Fernanda D.; Cortella, Lucas R. X.; Rossi, Priscila A.; Cruz, Claudinei; Moraes, Gilberto
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

22/10/2015

22/10/2015

01/02/2015

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Processo FAPESP: 2007/57927-8

Fish parasites are among the crucial limiting factors in aquaculture. The organophosphorous pesticide trichlorfon is widely used as an insecticide and against fish parasites worldwide. In this study, the effects of environmental trichlorfon on biochemical and physiological parameters were investigated in Piaractus mesopotamicus (pacu), a widely farmed fish in South America, through sublethal exposure (8 A mu g L-1, 10 % of the LC50; 96 h) and recovery. The activity of brain acetylcholinesterase (AChE) was reduced after exposure (15.5 %) and remained decreased during the recovery (21.5 %). In white muscle, AChE activity decreased 31 % only after recovery. Alkaline phosphatase (ALP) and acid phosphatase (ACP) activities of the liver, muscle and plasma were steady during exposure. However, after the recovery period, ALP activity was increased in the liver and muscle and decreased in plasma, while ACP was increased in the liver and decreased in muscle. Intermediary metabolism was also affected by trichlorfon, depicting increase of energetic demand (hypoglycemia, neoglucogenesis and lipid catabolism), which remained even after recovery. These results indicate that P. mesopotamicus is adversely affected by sublethal concentrations of trichlorfon and are useful for assessing the impact as well as the pros and cons of its use in controlling fish parasites in aquaculture.

Formato

299-309

Identificador

http://link.springer.com/article/10.1007%2Fs10695-014-9983-y

Fish Physiology And Biochemistry. Dordrecht: Springer, v. 41, n. 1, p. 299-309, 2015.

0920-1742

http://hdl.handle.net/11449/129712

http://dx.doi.org/10.1007/s10695-014-9983-y

WOS:000348447700025

Idioma(s)

eng

Publicador

Springer

Relação

Fish Physiology And Biochemistry

Direitos

closedAccess

Palavras-Chave #Organophosphorus #AChE #Phosphatases #Metabolism #Freshwater fish
Tipo

info:eu-repo/semantics/article