<b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131
Natural insecticides from plant extracts represent an alternative to the highly toxic synthetic products in order to reduce environmental contamination; however some might also be toxic for non-target organisms. The present study determined the 50% lethal concentration (48h; LC50) for adults Nile ti...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2012-12-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131 |
| _version_ | 1811230106132152320 |
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| author | Debora Cristina Millan Natália Sayuri Shiogiri Naiara Elisabete da Silva de Souza Hugo Ribeiro da Silva Marisa Narciso Fernandes |
| author_facet | Debora Cristina Millan Natália Sayuri Shiogiri Naiara Elisabete da Silva de Souza Hugo Ribeiro da Silva Marisa Narciso Fernandes |
| author_sort | Debora Cristina Millan |
| collection | DOAJ |
| description | Natural insecticides from plant extracts represent an alternative to the highly toxic synthetic products in order to reduce environmental contamination; however some might also be toxic for non-target organisms. The present study determined the 50% lethal concentration (48h; LC50) for adults Nile tilapia (Oreochromis niloticus) exposed to the natural insecticide Fumydro®, based on the tobacco plant (Nicotiana tabacum), and evaluated its effect on hematological variables. After preliminary tests, adult specimens of O. niloticus were exposed to four Fumydro® concentrations (200, 300, 400 and 500 μL L-1). The 48h; LC50 of Fumydro® was determined at 370 ± 50 μL L-1. The surviving fish after exposure to Fumydro® showed an increase in the number of red blood cells, hemoglobin concentration, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration. The number of thrombocytes and leukocytes has not changed, unlike the differential leukocyte count that presented an increased percentage of neutrophils. The results indicated that the insecticide Fumydro® is highly toxic to Nile tilapia and changes in erythrocyte variables suggested the induction to hypoxemia with low effect on the immune system. |
| first_indexed | 2024-04-12T10:24:36Z |
| format | Article |
| id | doaj.art-363b34cd8323437e822aed2c2b038235 |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-04-12T10:24:36Z |
| publishDate | 2012-12-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-363b34cd8323437e822aed2c2b0382352022-12-22T03:37:00ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2012-12-0135210.4025/actascibiolsci.v35i2.14131<b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131Debora Cristina Millan0Natália Sayuri Shiogiri1Naiara Elisabete da Silva de Souza2Hugo Ribeiro da Silva3Marisa Narciso Fernandes4Centro Universitário Central PaulistaUniversidade Federal de São CarlosUniversidade Federal de São CarlosUniversidade Federal de São CarlosUniversidade Federal de São CarlosNatural insecticides from plant extracts represent an alternative to the highly toxic synthetic products in order to reduce environmental contamination; however some might also be toxic for non-target organisms. The present study determined the 50% lethal concentration (48h; LC50) for adults Nile tilapia (Oreochromis niloticus) exposed to the natural insecticide Fumydro®, based on the tobacco plant (Nicotiana tabacum), and evaluated its effect on hematological variables. After preliminary tests, adult specimens of O. niloticus were exposed to four Fumydro® concentrations (200, 300, 400 and 500 μL L-1). The 48h; LC50 of Fumydro® was determined at 370 ± 50 μL L-1. The surviving fish after exposure to Fumydro® showed an increase in the number of red blood cells, hemoglobin concentration, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration. The number of thrombocytes and leukocytes has not changed, unlike the differential leukocyte count that presented an increased percentage of neutrophils. The results indicated that the insecticide Fumydro® is highly toxic to Nile tilapia and changes in erythrocyte variables suggested the induction to hypoxemia with low effect on the immune system.https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131toxicityerythrocytesleukocytesteleostthrombocytes |
| spellingShingle | Debora Cristina Millan Natália Sayuri Shiogiri Naiara Elisabete da Silva de Souza Hugo Ribeiro da Silva Marisa Narciso Fernandes <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 Acta Scientiarum: Biological Sciences toxicity erythrocytes leukocytes teleost thrombocytes |
| title | <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 |
| title_full | <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 |
| title_fullStr | <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 |
| title_full_unstemmed | <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 |
| title_short | <b>Ecotoxicity and hematological effects of a natural insecticide based on tobacco (<i>Nicotiana tabacum</i>) extract on Nile tilapia (<i>Oreochromis niloticus</i>)</b> - doi: 10.4025/actascibiolsci.v35i2.14131 |
| title_sort | b ecotoxicity and hematological effects of a natural insecticide based on tobacco i nicotiana tabacum i extract on nile tilapia i oreochromis niloticus i b doi 10 4025 actascibiolsci v35i2 14131 |
| topic | toxicity erythrocytes leukocytes teleost thrombocytes |
| url | https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131 |
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