Impactos socioambientais da atividade pesqueira e ecologia da ictiofauna na lagoa de Parnaguá, Parnaguá - PI

Abstract

Water is a natural and finite natural resource for the maintenance of the life of all beings that inhabit the earth. Virtually all the anthropic activities developed depend on this resource, mainly fresh water which corresponds to only 3% of all water available on the planet. Since only 0.3% is available for human consumption. All these activities depend on the maintenance of the water bodies. Artisanal fishing is one of the activities that depend on the maintenance of the wells in equilibrium, since this depends on the number of families who withdraw their income. It is called handicraft because it is developed with a lower level of technological equipment in a family tradition. This study was divided in three distinct chapters where: the first one sought to build the profile of the fishermen of the municipality of Parnaguá, the second one sought to study the ichthyological composition of Lagoa and the third studied the ecology of the species found in the water body under study. What is worth mentioning from each one is that in chapter one it can be seen that 100% of fishermen claim that the income from fishing is not enough for the subsistence of their families. In chapter two what attracts more attention is the fact of the predominance of the species Piranha (Serrasalmus nattereri) that can be explained because this species is known to be a fish carnivorous and veroz. In the third chapter we can see that all the species found can also be found in other regions, however, they are easily occurring species in the basins of the northeast region.