Banca de DEFESA: DOUGLAS GUEDES GOTARDI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DOUGLAS GUEDES GOTARDI
DATE: 27/06/2023
TIME: 09:00
LOCAL: Campus de Rolim de Moura- sala 21
TITLE:

Water quality, socioeconomic profile and sanitary characterization of family fish farms in the interior of Rondônia.

KEY WORDS:

Sanitary management. Small fish farms. Socioeconomic information. Sustainable management. Water. 

PAGES: 71
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

This Master's Dissertation is organized into a Bibliographic Review and a scientific article. The aimed was to evaluate water quality, obtain socioeconomic information and characterize the sanitary conditions of family fish farms in the interior of the Rondônia state. The current study was conducted out by visiting 126 fish farms in different microregions, namely the Centro-Leste, Vale do Jamari, Vale do Guaporé, Rio Madeira, Rio Mamoré and Zona da Mata. The interviews were carried out between November 2021 and May 2023. Field data were obtained using a fixed form. The data obtained, after being organized, were submitted to descriptive statistical analysis. Analyzes of frequency (%), arithmetic average (μ), standard deviation (σ) and total amplitude were used. Then, the data were subjected to the Shapiro-Wilk test to verify whether the samples came from a population with normal distribution. Student's t test was applied at 5% significance level to compare the physicochemical means of water in different hydrological seasons. And, the Tukey’s test was applied at 5% significance, to compare the physicochemical means of water in different microregions and for socioeconomic information. Water quality varied significantly between the microregions, due to the physicochemical and microbiological characteristics of the rivers and streams, as well as the control and monitoring routine. The fish farms adopted the semi-intensive production system, with the fish distributed in semi-dug ponds. Most fish farms had their fish ponds built on the riverbed, that is, in the lower parts of the relief. It was confirmed that the Vale Jamari and the Centro-Leste are the microregions of Rondônia that most stand out in fish farm production, including in the context of family fish farming. Almost all fish farms were commercially active, although more than half of them had less than half of their production capacity. 2/3 of these fish farms traded only for the domestic market, for their micro-region. Whole fish (in natura) and frozen gutted fish (commercial cuts) are its main products. The fish cultivated in addition to tambaqui were pirarucu, matrinxã, pintado, tambatinga, pirapitinga, jaturarana and piau-açu. Fish farming was a complement to the family income from dairy and beef cattle and corn, coffee and cocoa crops. In general, family fish farming in the interior of Rondônia state is rustic and of low productivity, especially in Vale do Guaporé and Rio Mamoré. There are many challenges to overcome, such as the continuous application of good sanitary and biosafety management practices, in addition to avoiding the unregulated use of chemical products that cause changes in the environment, the health of the fish and the consumer.

COMMITTEE MEMBERS:
Externo ao Programa - 1328178 - LEOMAR RIPPEL - UNIRExterno ao Programa - 3066115 - MARCONDES AGOSTINHO GONZAGA JUNIOR - UNIRExterno à Instituição - JERONIMO VIEIRA DANTAS FILHO - UNIR
Externo à Instituição - RAPHAEL BRITO DOS SANTOS - IFAM