Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1392
10
1
gregorian
2014
1
1
16
1
online
1
fulltext
en
Testing the Neem Biopesticide (Azadirachta indica A. Juss) for Acute Toxicity with Danio rerio and for Chronic Toxicity with Daphnia magna
Recently, some natural products have been used in the fields as alternative to synthetic compounds, to minimize the negative impacts to the environment. This study aimed to verify the effects of Neem-based bio-pesticide in causing acute toxicity for a fish and chronic toxicity for a microcrustacean. To this end, <em>Danio rerio </em>and<em> Daphnia magna</em> were exposed to various concentrations of a Neem-based oil formulation. In the first experiment, adults of <em>D. rerio</em> were exposed for 96 hours to different concentrations to determine the median lethal concentration (LC<sub>50-96h</sub>). For <em>D. magna</em>, first an acute toxicity test was performed to determine the median effective concentration (EC<sub>50-48h</sub>). Based on the EC<sub>50</sub> established in the acute test, the concentrations for the 21-day chronic toxicity test were determined. Endpoints evaluated were reproduction (number of neonates produced) and size of <em>D. magna</em>.The median lethal concentration for the fish was 0.22 mL L<sup>-1</sup>, and the median effective concentration (EC<sub>50 - 48h</sub>) for <em>D. magna</em> was 0.17 mL L<sup>-1</sup>. In the chronic test, all concentrations affected reproduction and size of <em>D. magna</em>. The formulation tested may be hazardous to aquatic organisms.
Aquatic organisms,Insecticide,Natural products,Toxicology
105
111
http://jast.modares.ac.ir/browse.php?a_code=A-23-11598-83&slc_lang=en&sid=23
L. A.
Maranho
L. A.
Maranho
100319475328460050272
100319475328460050272
No
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
R. G.
Botelho
R. G.
Botelho
100319475328460050266
100319475328460050266
Yes
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
M.
Mitie Inafuku
M.
Mitie Inafuku
100319475328460050267
100319475328460050267
No
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
L. de A. R.
Nogueira
L. de A. R.
Nogueira
100319475328460050268
100319475328460050268
No
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
R.
Alves de Olinda
R.
Alves de Olinda
100319475328460050269
100319475328460050269
No
Estadual University of Paraíba - UEPB. Campus I - Center for Science and Technology, Department of Statistic. Av das Baraúnas, 351, CEP 58101-001, Bodocongó, Campina Grande, Paraíba, Brazil.
Estadual University of Paraíba - UEPB. Campus I - Center for Science and Technology, Department of Statistic. Av das Baraúnas, 351, CEP 58101-001, Bodocongó, Campina Grande, Paraíba, Brazil.
B. A.
Inacio de Sousa
B. A.
Inacio de Sousa
100319475328460050270
100319475328460050270
No
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
V. L.
Tornisielo
V. L.
Tornisielo
100319475328460050271
100319475328460050271
No
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.
Center for Nuclear Energy in Agriculture, University of São Paulo - CENA/USP, Laboratory of Aquatic Toxicology, Av. Centenario, 303, São Dimas, CEP: 13416-000, - Piracicaba, SP, Brazil.