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| Author(s): |
Roberta Adriana De La Verne da Cruz Jorge
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2003-06-02 |
| Examining board members: |
Maria da Glória Blumer Soares Moreira;
Afonso Celso Dias Bainy;
Evaldo Luiz Gaeta Espíndola;
Elisabete de Santis Braga da Graça Saraiva
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| Advisor: | Maria da Glória Blumer Soares Moreira |
| Field of knowledge: | Agronomical Sciences - Fishery Resources and Fishery Engineering |
| Indexed in: | Banco de Dados Bibliográficos da USP-DEDALUS |
| Location: | Universidade de São Paulo. Biblioteca da Escola de Engenharia de São Carlos; EESC/TESE 2809 |
| Abstract | |
Some antropic activities may be the cause fo alterations in natural resources, being it river, soil or sea. These alteration effects may be observed in the biota, water quality, nutrients disponibility, interfering with all elements that are part of a ecosystem, with greater or lesser influence degree. The present study was directed to determine the effect of pollutants, such as zinc sulphate, ammonia chlorate, sodium dodecilsulphate and benzene, acting over larvae of a marine bioindicator, the mussel (Perna perna), besides adding data on biology and chemically analysing hidrocarbon presence in larvae and adult animal tissues. In order to obtain these results, toxicity tests were used and bioenergetic (oxygen consumption and ammonia excretion), biomarkers, phosphorus and nitrogen excretion, were studied. As for biology, individuals sexually mature were found starting with 26,1 and 27 mm length females and males, respectively, and there is difference between larvae and ovocites, although statistically not significant, submitted to pollutants action. The hydrocarbon analysis indicates a biogenic and petrogenic contribution to north coast of São Paulo State. For the other analyses the observed results, when compared to control groups, showed that larvae are sensitive, and responded to different pollutants, generally with activity inhibition. (AU) | |