Open AccessConcentração letal do glifosato para juvenis de Curimatã-Pacu
Author(s) -
Emília Tatiane Lopes da Silva,
Maria Letícia Fernandes Dias,
Marcelo Mattos Pedreira,
José Barbosa dos Santos
Publication year - 2016
Publication title -
boletim do instituto de pesca
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 15
eISSN - 1678-2305
pISSN - 0046-9939
DOI - 10.20950/1678-2305.2016v42n4p759
Subject(s) - pacu , biology , zoology , horticulture , toxicology , fishery
This study aimed to determine the lethal concentration of glyphosate (CL50) for juveniles of curimatã-pacu, Prochilodus argenteus. The experiment was conducted in CODEVASF- Três Marias, MG, Brazil, during 96 h, using 240 juvenile fish (standard length 6.4 ± 8.47 cm and weight 8.98 ± 3.91 g), distributed in six herbicide concentrations: 0, 5, 10, 15, 20 and 40 mg.L-1 in a completely randomized design with four replications. Each 24 h was observed the animal´s behavior and the mortality rate, and 48, 72 and 96 h CL50 was estimated. The CL50 of glyphosate at 48, 72 and 96 h were 20.88, 19.91 and 19.09 mg.L-1, respectively. The herbicide provoked lethargic swimming of the fish.