Gobal Advanced Research Journal of Environmental Science and Toxicology (GARJEST) ISSN: 2315-5140
March 2013 Vol. 2(3), pp. 060-067
Copyright © 2013 Global Advanced Research Journals

 

Full Length Research Paper

Acute intoxication by deltamethrin in jundia: emphasis on clinical, biochemical and haematological effects

Luciana do Amaral Gurgel Galeb1, Luciana Nakaghi Ganeco2, Ana Carolina Fredianelli1, Roberta Wagner1, Ana Laura Pinto D’Amico Fam1, Daniel Carlos Coatti Rocha1, Peter Gaberz Kirschnik3 and Cláudia Turra Pimpão1*

1College of Animal Science and Veterinary Medicine, Pontifícia Universidade Católica do Paraná – PUCPR, BR 376, km 14, Bairro Costeira, São José dos Pinhais, CEP 83010-500, Paraná, Brasil
2Embrapa Pesca e Aquicultura. Quadra 103 Sul – I, Av JK, n. 164, Térreo. CEP 77015-012. Palmas, Tocantins.
3Faculdade Católica do Tocantins. Av. Teotônio Segurado, Qd. 1402 SUL, Conj. 01, CEP 77.000-000,

Palmas – Tocantins.

*Corresponding Author E-mail: laudia.pimpao@pucpr.br; Tel.: +55 041 32994348; Fax: +55 041

Accepted March 08, 2013

Abstract

Deltamethrin (DM) is a synthetic pyrethroid pesticide highly toxic to aquatic organisms. Because of its lipophilic feature it can be highly absorbed by the fish gills, which partially explains the high sensitivity of these animals to DM exposure in concentrations up to a thousand times lower than in mammals. This study compared clinical, biochemical and haematological observations between DM intoxicated and non-intoxicated fish. The experiment involved five exposure conditions (control and four concentrations of DM) and was executed in triplicates with 4 animals per set (n=60). The first behavior changes represented by rapid operculum movement and irregular or on the surface swimming were observed shortly after exposure to the concentrations of 0.5, 1.0 and 1.5 mg/L of DM. Fish exposed to the DM concentration (0.5 mg/L) for 96 h showed significantly higher leukocyte counts when compared to fish in the other groups. The response of the fish exposed to different concentrations of DM produced an inverted U-shaped curve, so the fish exposed to higher concentrations of DM may have had adaptive behavior alterations or loss of selectivity effects at concentrations high in relationship of leukocytes number. Significant decrease in the activity levels of some of the hepatic enzymes such as aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase result from DM exposure. The results demonstrated that DM environmental pollution can rapidly cause death to Rhamdia quelen as it is a toxic insecticide for this species.

Keywords: Fish, Toxicity, Hepatic enzymes, Leukocytes, Pyrethroids, Rhamdia quelen.

 

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