Avaliação de bioacumulação de chumbo e sua influência sobre o crescimento em alevinos de tilápia do Nilo
Humans, animals and plants can be exposed to metal contamination all the time due to anthropogenic activities. In this work, the influence of lead on Nile tilapia was studied to evaluate the development and growth of the Nile tilapia for a period of four months. After the slaughtering, the samples w...
| Autor principal: | Evandro, Bonifacio |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/5497 |
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| Resumo: |
Humans, animals and plants can be exposed to metal contamination all the time due to anthropogenic activities. In this work, the influence of lead on Nile tilapia was studied to evaluate the development and growth of the Nile tilapia for a period of four months. After the slaughtering, the samples were divided into three parts: head, viscera and carcass / dorsum and submitted to two different methods of digestion, one cold and the other hot, to verify concentrations of lead, copper, iron, manganese, zinc And calcium by atomic absorption spectrometry. The results showed that the growth of the fish exposed to lead contamination was 23% lower when compared to the control. It is also possible to observe that the level of lead in the contaminated sample was 2248.15% higher, that is, the levels of essential metals and minerals such as: Cu, Fe, Mn, Zn and Ca had lower absorption levels, being lower Compared to the control in 8.63%, 14.24%, 49.57%, 2.70% and 7.64%, respectively. Conclusion on the influence of lead on metals and essential minerals, ending at a growth rate in which fish without lead had a 28.57% increase and the fish mortality index of the contaminated aquarium was 66,67% while the control had an index of 36.36%. |
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