Abstract

CARAMELLO, C.S.; HERNANDEZ, D.R.; JORGE, M.J.  and  JORGE, L.C. Efectos de un herbicida a base de glifosato sobre hematíes de Prochilodus lineatus (Pisces, Prochilodontidae). Rev. vet. [online]. 2018, vol.29, n.2, pp.123-127. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.2923277.

Nowadays, agriculture main purpose is to increase production in order to guarantee the supply and distribution of products to both national and international markets, thus improving economic profitability. The latter is accompanied by the use of different agrochemicals that, discharged to the environment, can have a negative impact on flora, fauna, water bodies and even on humans. Glyphosate is a widely used herbicide which benefits are being questioned due to the disadvantages related to its excessive use. The objective of this work was to evaluate the occurrence of cytoplasmic alterations in "sábalo" erythrocytes (Prochilodus lineatus) exposed to a chronic test with glyphosate (Roundup Full II). Eight "sábalo" juvenils were used which were randomly distributed into two treatments: control (C), without glyphosate, and treated (T), with the addition of 0.1 μg/l of the herbicide. The trial lasted 70 days. For the preparation of blood smears, peripheral blood was collected by puncture of the caudal vein. The alterations observed were cytoplasmic vacuoles, dacryocytosis and microcytosis. These abnormalities occurred more frequently in the T group compared to C group. Results suggest the existence of an hematic pathological response when "sábalos" were submitted to a chronic exposure of 0.1 μg/l of the herbicide.

Keywords : fishes; herbicide glyphosate; cytotoxicity; erythrocytic alterations.